Ingredients | Amount Per Serving |
---|---|
10 mg | |
Phospholipid complex
(containing)
(Phospholipid complex Note: containing )
|
500 mg |
100 mg Phosphatidylserine
|
100 mg |
(Bacopa monnieri )
(standardized to 20% Bacopasides)
(Bacopa monnieri (Form: standardized to 20% Bacopasides) Genus: Bacopa Species: monnieri )
|
150 mg |
(standardized to 1.5% Withanolides)
(Ashwagandha extract (Form: standardized to 1.5% Withanolides) )
|
80 mg |
Ginkgo biloba extract
(Ginkgo biloba )
(28% Ginkgoflavonglycosides, 10% Terpenes)
(Ginkgo biloba extract (Form: 28% Ginkgoflavonglycosides, 10% Terpenes) Genus: Ginkgo Species: biloba )
|
60 mg |
Ginkgolide A
(3.1%)
(Ginkgolide A Note: 3.1% )
|
|
Ginkgolide B
(3.0%)
(Ginkgolide B Note: 3.0% )
|
|
Bilobalide
(2.3%)
(Bilobalide Note: 2.3% )
|
|
Ginkgolide C
(1.6%)
(Ginkgolide C Note: 1.6% )
|
|
(Cytidine-5-Diphosphate Choline)
|
22 mg |
5 mg |
Microcrystalline Cellulose, Silicon Dioxide (Alt. Name: SiO2), Capsule (Form: is made of Plant Cellulose)
Below is general information about the effectiveness of the known ingredients contained in the product Neuro-Max II. Some ingredients may not be listed. This information does NOT represent a recommendation for or a test of this specific product as a whole.
INSUFFICIENT RELIABLE EVIDENCE to RATE
INSUFFICIENT RELIABLE EVIDENCE to RATE
INSUFFICIENT RELIABLE EVIDENCE to RATE
INSUFFICIENT RELIABLE EVIDENCE to RATE
INSUFFICIENT RELIABLE EVIDENCE to RATE
Below is general information about the safety of the known ingredients contained in the product Neuro-Max II. Some ingredients may not be listed. This information does NOT represent a recommendation for or a test of this specific product as a whole.
POSSIBLY SAFE ...when used orally and appropriately, short-term. Ashwagandha has been used with apparent safety in doses of up to 1250 mg daily for up to 6 months (3710,11301,19271,90649,90652,90653,97292,101816,102682,102683) (102684,102685,102687,103476,105824,109586,109588,109589,109590). ...when used topically. Ashwagandha lotion has been used with apparent safety in concentrations up to 8% for up to 2 months (111538).
PREGNANCY: LIKELY UNSAFE
when used orally.
Ashwagandha has abortifacient effects (12).
LACTATION:
Insufficient reliable information available; avoid using.
POSSIBLY SAFE ...when used orally and appropriately, short-term. Bacopa has been used safely in clinical trials at a dose of up to 600 mg daily for up to 12 weeks (10058,10059,17946,97605).
CHILDREN: POSSIBLY SAFE
when used orally and appropriately, short-term.
Clinical research suggests bacopa extract might be safe to use at a dose of 225 mg daily for up to 6 months or 320 mg daily for up to 14 weeks in children aged 6-14 years (33304,97603,109625).
PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using.
POSSIBLY SAFE ...when used orally and appropriately, short-term (12131). Citicoline 1000-2000 mg daily has been used with apparent safety for up to 12 weeks (12130,43248,98230,104828,109015,109016). Citicoline 2500 mg daily has also been used with apparent safety for up to 7 weeks (100988). ...when citicoline is used intravenously or intramuscularly under medical supervision (12131). Citicoline has been administered intravenously with apparent safety at a dose of 500 mg daily for 7 days, or 2000 mg daily for 3 days (43229,98444,104828). ...when used topically on the eye. Citicoline 2% eye drops have been used with apparent safety for up to 3 years alone or in combination with cyanocobalamin 0.05% (98229,104824,104825,104826,104827).
CHILDREN: POSSIBLY SAFE
when citicoline is used orally and appropriately.
Citicoline has been used with apparent safety for up to 1 year at a dose of 250 mg daily in children under 5 years of age and 500 mg daily in children 5-13 years of age (98442).
There is insufficient reliable information available about the safety of citicoline when used intravenously in children.
PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using.
LIKELY SAFE ...when niacin is taken in food or as a supplement in amounts below the tolerable upper intake level (UL) of 30 mg daily for adults 18 years of age and 35 mg daily for adults 19 years and older (6243). ...when prescription products are used orally and appropriately in doses of up to 2 grams daily (12033). CHILDREN:
LIKELY SAFE ...when used orally in amounts that do not exceed the tolerable upper intake level (UL). The ULs of niacin for children are: 1-3 years of age, 10 mg daily; 4-8 years of age, 15 mg daily; 9-13 years of age, 20 mg daily; 14-18 years of age, 30 mg daily (6243).
PREGNANCY AND LACTATION: LIKELY SAFE
when used orally in amounts that do not exceed the tolerable upper intake level (UL).
The UL of niacin during pregnancy and lactation is 30 mg daily for 14-18 years of age and 35 mg daily for 19 years and older (6243).
There is insufficient reliable information available about the safety of larger oral doses of niacin during pregnancy or lactation; avoid using.
POSSIBLY SAFE ...when used orally and appropriately for up to 12 months (1784,1788,82041,82074,82089,82091,82120,82121,82151,82152)(82153,82154,82179,82180,82182,82183,104522,106845,110744). ...when used intravenously and appropriately, short-term (82074,82099,82147,82158,82159,82186,110744).
PREGNANCY: POSSIBLY UNSAFE
when used orally.
In June 2019, the US Food and Drug Administration (FDA) issued a statement of warning that those who are pregnant or who could become pregnant should avoid vinpocetine (95751). In rats, vinpocetine has been associated with an increased risk of miscarriage at a dose of 60 mg/kg daily and with reduced fetal weight and increased incidence of birth defects at a dose of 5-20 mg/kg. Based on pharmacokinetic analyses, a daily vinpocetine dose of 10 mg in humans is comparable to a daily dose of 5 mg/kg in rats (99701).
LACTATION:
Insufficient reliable information available; avoid using.
Below is general information about the interactions of the known ingredients contained in the product Neuro-Max II. Some ingredients may not be listed. This information does NOT represent a recommendation for or a test of this specific product as a whole.
Theoretically, taking ashwagandha with antidiabetes drugs might increase the risk of hypoglycemia.
Details
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Theoretically, taking ashwagandha with antihypertensive drugs might increase the risk of hypotension.
Details
Animal research suggests that ashwagandha might lower systolic and diastolic blood pressure (19279). Theoretically, ashwagandha might have additive effects when used with antihypertensive drugs and increase the risk of hypotension.
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Theoretically, taking ashwagandha might increase the sedative effects of benzodiazepines.
Details
There is preliminary evidence that ashwagandha might have an additive effect with diazepam (Valium) and clonazepam (Klonopin) (3710). This may also occur with other benzodiazepines.
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Theoretically, taking ashwagandha might increase the sedative effects of CNS depressants.
Details
Ashwagandha seems to have sedative effects. Theoretically, this may potentiate the effects of barbiturates, other sedatives, and anxiolytics (3710).
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Theoretically, taking ashwagandha might decrease the effects of immunosuppressants.
Details
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Ashwagandha might increase the effects and adverse effects of thyroid hormone.
Details
Concomitant use of ashwagandha with thyroid hormones may cause additive therapeutic and adverse effects. Preliminary clinical research and animal studies suggest that ashwagandha boosts thyroid hormone synthesis and secretion (19281,19282,97292). In one clinical study, ashwagandha increased triiodothyronine (T3) and thyroxine (T4) levels by 41.5% and 19.6%, respectively, and reduced serum TSH levels by 17.4% from baseline in adults with subclinical hypothyroidism (97292).
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Theoretically, concurrent use might decrease the effectiveness of both agents.
Details
Bacopa seems to inhibit acetylcholinesterase and might increase acetylcholine levels, which could counteract the effects of anticholinergic drugs (17946). Similarly, anticholinergic drugs might counteract the cholinergic effects of bacopa.
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Theoretically, bacopa might increase the effects and adverse effects of cevimeline.
Details
In one case, a 58-year-old female taking cevimeline long-term for Sjogren syndrome experienced hyperhidrosis, malaise, nausea, and tachycardia shortly after taking a single dose of bacopa. Symptoms resolved after two days. Cevimeline is metabolized by cytochrome P450 (CYP) 2D6 and CYP3A4, and researchers theorize that bacopa may have inhibited these isoenzymes (109627). However, it is unclear if bacopa causes clinically significant inhibition of either CYP2D6 or CYP3A4.
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Theoretically, concurrent use of bacopa with other cholinergic drugs might have additive effects.
Details
Bacopa seems to inhibit acetylcholinesterase and might increase acetylcholine levels (17946). Theoretically, this could result in additive cholinergic effects when used with cholinergic drugs.
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Theoretically, bacopa might increase the levels and adverse effects of CYP1A2 substrates.
Details
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Theoretically, bacopa might increase the levels and adverse effects of CYP2C19 substrates.
Details
In vitro evidence suggests that bacopa extract can moderately and non-competitively inhibit CYP2C19 enzymes (97606). It is not known whether this is clinically significant.
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Theoretically, bacopa might increase the levels and adverse effects of CYP2C9 substrates.
Details
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Theoretically, bacopa might increase the levels and adverse effects of CYP3A4 substrates.
Details
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Theoretically, bacopa might have additive effects when used with thyroid hormone.
Details
Animal research suggests that bacopa increases thyroxine (T4) levels in mice by about 40% (33286).
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Concomitant use of alcohol and niacin might increase the risk of flushing and hepatotoxicity.
Details
Alcohol can exacerbate the flushing and pruritus associated with niacin (4458,11689). Large doses of niacin might also exacerbate liver dysfunction associated with chronic alcohol use. A case report describes delirium and lactic acidosis in a patient taking niacin 3 grams daily who ingested 1 liter of wine (14510). Advise patients to avoid large amounts of alcohol while taking niacin.
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Theoretically, niacin might antagonize the therapeutic effects of uricosurics such as allopurinol.
Details
Large doses of niacin can reduce urinary excretion of uric acid, potentially resulting in hyperuricemia (4860,4863,12033). Doses of uricosurics such as allopurinol might need to be increased to maintain control of gout in patients who start taking niacin (4458). People who have frequent attacks of gout despite uricosuric therapy should avoid niacin (4863).
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Theoretically, niacin may have additive effects when used with anticoagulant or antiplatelet drugs.
Details
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Niacin can increase blood glucose levels and may diminish the effects of antidiabetes drugs.
Details
Niacin impairs glucose tolerance in a dose-dependent manner, probably by causing or aggravating insulin resistance and increasing hepatic production of glucose (4860,4863,11692,11693). In diabetes patients, niacin 4.5 grams daily for 5 weeks can increase plasma glucose by an average of 16% and glycated hemoglobin (HbA1c) by 21% (4860). However, lower doses of 1.5 grams daily or less appear to have minimal effects on blood glucose (12033). In some patients, glucose levels increase when niacin is started, but then return to baseline when a stable dose is reached (12033,93344). Up to 35% of patients with diabetes may need adjustments in hypoglycemic therapy when niacin is added (4458,4860,4863,11689,12033).
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Theoretically, niacin may increase the risk of hypotension when used with antihypertensive drugs.
Details
The vasodilating effects of niacin can cause hypotension (4863,12033,93341). Furthermore, some clinical evidence suggests that a one-hour infusion of niacin can reduce systolic, diastolic, and mean blood pressure in hypertensive patients. This effect is not observed in normotensive patients (25917).
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Large doses of aspirin might alter the clearance of niacin.
Details
Aspirin is often used with niacin to reduce niacin-induced flushing (4458,11689). Doses of 80-975 mg aspirin have been used, but 325 mg appears to be optimal (4458,4852,4853,11689). Aspirin also seems to reduce the clearance of niacin by competing for glycine conjugation. Taking aspirin 1 gram seems to reduce niacin clearance by 45% (14524). This is probably a dose-related effect and not clinically significant with the more common aspirin dose of 325 mg (11689,14524).
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Bile acid sequestrants can bind niacin and decrease absorption. Separate administration by 4-6 hours to avoid an interaction.
Details
In vitro studies show that colestipol (Colestid) binds about 98% of available niacin and cholestyramine (Questran) binds 10% to 30% (14511).
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Theoretically, concomitant use of niacin and gemfibrozil might increase the risk of myopathy in some patients.
Details
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Theoretically, concomitant use of niacin and hepatotoxic drugs might increase the risk of hepatotoxicity.
Details
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Theoretically, concomitant use of niacin and statins might increase the risk of myopathy and rhabdomyolysis in some patients.
Details
Some case reports have raised concerns that niacin might increase the risk of myopathy and rhabdomyolysis when combined with statins (14508,25918). However, a significantly increased risk of myopathy has not been demonstrated in clinical trials, including those using an FDA-approved combination of lovastatin and niacin (Advicor) (7388,11689,12033,14509).
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Theoretically, niacin might antagonize the therapeutic effects of uricosurics such as probenecid.
Details
Large doses of niacin reduce urinary excretion of uric acid, potentially causing hyperuricemia (4863,12033). Doses of uricosurics such as probenecid might need to be increased to maintain control of gout in patients who start taking niacin (4458). People who have frequent attacks of gout despite uricosuric therapy should avoid niacin (4863).
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Theoretically, niacin might antagonize the therapeutic effects of uricosurics such as sulfinpyrazone.
Details
Large doses of niacin reduce urinary excretion of uric acid, potentially causing hyperuricemia (4863,12033). Doses of uricosurics such as sulfinpyrazone might need to be increased to maintain control of gout in patients who start taking niacin (4458). People who have frequent attacks of gout despite uricosuric therapy should avoid niacin (4863).
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Theoretically, niacin might antagonize the therapeutic effects of thyroid hormones.
Details
Clinical research and case reports suggests that taking niacin can reduce serum levels of thyroxine-binding globulin by up to 25% and moderately reduce levels of thyroxine (T4) (25916,25925,25926,25928). Patients taking thyroid hormone for hypothyroidism might need dose adjustments when using niacin.
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Theoretically, concomitant use of niacin and transdermal nicotine might increase the risk of flushing and dizziness.
Details
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Vinpocetine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Details
Clinical research shows that vinpocetine decreases red blood cell aggregation, as well as plasma and whole blood viscosity. This effect has been seen with intravenous vinpocetine 1 mg/kg and oral vinpocetine 30 mg daily (82101,82119). Vinpocetine also seems to have antiplatelet effects (1801,10061,82117).
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Theoretically, vinpocetine might increase levels of drugs metabolized by CYP2C9.
Details
In vitro research shows that vinpocetine weakly inhibits CYP2C9 (92933). However, this effect has not been reported in humans.
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Vinpocetine might modestly increase the risk of bleeding when taken with warfarin.
Details
Clinical research shows that the combination of warfarin and vinpocetine leads to slight increases in prothrombin time and the area under the concentration curve for warfarin. However, these increases were small, and researchers suggest that this interaction is not likely to be clinically significant in most patients (10829).
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Below is general information about the adverse effects of the known ingredients contained in the product Neuro-Max II. Some ingredients may not be listed. This information does NOT represent a recommendation for or a test of this specific product as a whole.
General
...Orally, ashwagandha seems to be well-tolerated.
Topically, no adverse effects have been reported. However, a thorough evaluation of safety outcomes has not been conducted.
Most Common Adverse Effects:
Orally: Diarrhea, gastrointestinal upset, nausea, and vomiting. However, these adverse effects do not commonly occur with typical doses.
Serious Adverse Effects (Rare):
Orally: Some case reports raise concerns about acute liver failure, hepatic encephalopathy, and the need for liver transplantation with ashwagandha treatment.
Dermatologic ...Orally, dermatitis has been reported in three of 42 patients in a clinical trial (19276).
Endocrine ...A case report describes a 73-year-old female who had taken an ashwagandha root extract (unspecified dose) for 2 years to treat hypothyroidism which had been previously managed with levothyroxine. The patient was diagnosed with hyperthyroidism after presenting with supraventricular tachycardia, chest pain, tremor, dizziness, fatigue, irritability, hair thinning, and low thyroid stimulating hormone (TSH) levels. Hyperthyroidism resolved after discontinuing ashwagandha (108745).
Gastrointestinal ...Orally, large doses may cause gastrointestinal upset, diarrhea, and vomiting secondary to irritation of the mucous and serous membranes (3710). When taken orally, nausea and abdominal pain (19276,110490) and gastritis and flatulence (90651) have been reported.
Genitourinary ...In one case report, a 28-year-old male with a decrease in libido who was taking ashwagandha 5 grams daily over 10 days subsequently experienced burning, itching, and skin and mucous membrane discoloration of the penis, as well as an oval, dusky, eroded plaque (3 cm) with erythema on the glans penis and prepuce (32537).
Hepatic ...Orally, ashwagandha in doses of 154-1350 mg daily has played a role in several case reports of liver injury. In most of these cases, other causes of liver injury were excluded, and liver failure did not occur. Symptoms included jaundice, pruritus, malaise, fatigue, lethargy, weight loss, nausea, diarrhea, abdominal pain, stool discoloration, and dark urine. Symptom onset was typically 5-180 days from first intake, although in some cases onset occurred after more than 12 months of use (102686,107372,110490,110491,111533,111535,112111). Laboratory findings include elevated aspartate transaminase (AST), alanine transaminase (ALT), alkaline phosphatase, and serum bilirubin (112111). In most cases, liver enzymes normalized within 1-5 months after discontinuation of ashwagandha (102686,107372,110491,111535,112111). However, treatment with corticosteroids, lactulose, ornithine, ursodeoxycholic acid, and plasmapheresis, among other interventions, was required in one case (111533). Rarely, use of oral ashwagandha has been reported to cause hepatic encephalopathy and liver failure requiring liver transplantation (110490).
Neurologic/CNS ...Orally, ashwagandha has been reported to cause drowsiness (110492). Headache, neck pain, and blurry vision have been reported in a 47-year-old female taking ashwagandha, cannabis, and venlafaxine. Imaging over the course of multiple years and hospital admissions indicated numerous instances of intracranial hemorrhage and multifocal stenosis of intracranial arteries, likely secondary to reversible cerebral vasoconstriction syndrome (RCVS) (112113). It is unclear whether the RCVS and subsequent intracranial hemorrhages were precipitated by ashwagandha, cannabis, or venlafaxine.
General
...Orally, bacopa is generally well tolerated.
Most Common Adverse Effects:
Orally: Abdominal cramps, diarrhea, dry mouth, headache, nausea.
Cardiovascular ...Orally, bacopa has been reported to cause palpitations (10058).
Gastrointestinal ...Orally, bacopa has been reported to cause abdominal cramps, abdominal pain, bloating, decreased appetite, diarrhea, dry mouth, excessive thirst, flatulence, indigestion, nausea, and increased stool frequency. Rates of adverse gastrointestinal events have ranged from 12% to 30% (10058,17946,33295,97605,109623,111520).
Musculoskeletal ...Orally, bacopa has been reported to cause arthralgia, muscle fatigue, and myopathy (10058,109623,111522). In one case, a 21-year-old male experienced progressive proximal weakness, muscle atrophy, weight loss, dark urine, and elevated serum markers of myopathy, with muscle biopsy showing immune-mediated necrotizing myopathy, after taking a supplement containing bacopa for 5 years (111522).
Neurologic/CNS ...Orally, bacopa has been reported to cause drowsiness, headache, insomnia, and vivid dreams (10058,10059,17946,109623).
Other ...Orally, bacopa has been reported to cause flu like symptoms and fatigue (10058,97605,111520).
General
...Orally, intramuscularly, and intravenously, citicoline seems to be well-tolerated.
Most Common Adverse Effects:
Orally: Abdominal pain, back pain, blurred vision, constipation, diarrhea, edema, headache, insomnia, nausea, rash.
Cardiovascular ...Orally, citicoline may cause chest pain, palpitations, hypotension, bradycardia, tachycardia, and peripheral edema in some patients, although the incidence is likely similar to placebo (12130,12131,12132,43225).
Dermatologic ...Orally, citicoline may cause skin rash in some patients (12130,12132,43248).
Gastrointestinal ...Orally, citicoline may cause abdominal pain, constipation, diarrhea, and nausea in some patients (12130,12132,98846,100988,105730,109015).
Musculoskeletal ...Orally, citicoline may cause back pain in some patients (43225).
Neurologic/CNS ...Orally, citicoline may cause headache and insomnia in some patients (12130,43230,43273,98846,100988,109015,109016).
Ocular/Otic ...Orally, citicoline may cause blurred vision in some patients (12130,12132).
Other ...Orally, citicoline may cause edema of the extremities in some patients (43225).
General
...Orally, niacin is well tolerated in the amounts found in foods.
It is also generally well tolerated in prescription doses when monitored by a healthcare provider.
Most Common Adverse Effects:
Orally: Flushing, gastrointestinal complaints (abdominal pain, constipation, diarrhea, heartburn, nausea, vomiting), and elevated liver enzymes.
Serious Adverse Effects (Rare):
Orally: Hepatotoxicity, myopathy, thrombocytopenia, and vision changes.
Cardiovascular
...Orally, flushing is a common dose-related adverse reaction to niacin.
A large meta-analysis of clinical studies shows that up to 70% of patients may experience flushing (96211). Although flushing can occur with doses of niacin as low as 30 mg daily, it is more common with the larger doses used for treatment of dyslipidemia. The flushing reaction is due to prostaglandin-induced blood vessel dilation and can also include symptoms of burning, tingling, urticaria, erythema, pain, and itching of the face, arms, and chest. There may also be increased intracranial blood flow and headache (4889,26089,93341,104933). Onset is highly variable and ranges from within 30 minutes to as long as 6 weeks after the initial dose (6243). Flushing can be minimized via various strategies, including taking doses with meals, slow dose titration, using extended release formulations, pretreating with non-steroidal anti-inflammatory drugs, taking regular-release niacin with meals, or taking the sustained-release product at bedtime (4852,4853,4854,4857,4858,25922,26073,26084). Flushing often diminishes with continued use but can recur when niacin is restarted after missed doses (4863,6243,26081). The vasodilating effects of niacin can also cause hypotension, dizziness, tachycardia, arrhythmias, syncope, and vasovagal attacks, especially in patients who are already taking antihypertensive drugs (4863,12033,93341,110494).
High doses of niacin can raise homocysteine levels. A 17% increase has been reported with 1 gram daily and a 55% increased has been reported with 3 grams daily. Elevated homocysteine levels are an independent risk factor for cardiovascular disease (490); however, the clinical significance of this effect is unknown. A large-scale study (AIM-HIGH) found that patients receiving extended-release niacin (Niaspan) 1500-2000 mg daily with a statin had an over two-fold increased risk of ischemic stroke (1.6%) when compared with those receiving only simvastatin (0.7%). However, when the risk was adjusted for confounding factors, niacin was not found to be associated with increased stroke risk (17627,93354). A meta-analysis of three clinical trials conducted in approximately 29,000 patients showed a higher risk of mortality in patients taking niacin in addition to a statin when compared with a statin alone. However, with a p-value of 0.05 and confidence interval including 1, the validity of this finding remains unclear (97308).
Endocrine
...Orally, niacin can impair glucose tolerance in a dose-dependent manner.
Dosages of 3-4 grams daily appear to increase blood glucose in patients with or without diabetes, while dosages of 1.5 grams daily or less have minimal effects (12033). Niacin is thought to impair glucose tolerance by increasing insulin resistance or increasing hepatic output of glucose (4863,11692,11693). In patients with diabetes, niacin 4.5 grams daily for 5 weeks has been associated with an average 16% increase in plasma glucose and 21% increase in glycated hemoglobin (HbA1C) (4860). Up to 35% of patients with diabetes may need to increase the dose or number of hypoglycemic agents when niacin is started (4458,4860,4863,11689,12033). Occasionally, severe hyperglycemia requiring hospitalization can occur (11693). In patients with impaired fasting glucose levels, niacin may also increase fasting blood glucose, and adding colesevelam might attenuate this effect (93343).
Although patients without diabetes seem to only experience small and clinically insignificant increases in glucose (4458), niacin might increase their risk of developing diabetes. A meta-analysis of clinical research involving over 26,000 patients shows that using niacin over 5 years is associated with increased prevalence of new onset type 2 diabetes at a rate of 1 additional case of diabetes for every 43 patients treated with niacin (96207). This finding is limited because the individual trials were not designed to assess diabetes risk and the analysis could not be adjusted for confounding factors like obesity. One small clinical study shows that taking extended-release niacin with ezetimibe/simvastatin does not increase the risk of a new diagnosis of diabetes or need for antidiabetic medication when compared with ezetimibe/simvastatin alone after 16 months (93344). This may indicate that the increased risk of developing diabetes is associated with niacin use for more than 16 months.
Niacin therapy has also been linked with hypothyroidism and its associated alterations in thyroid hormone and binding globulin tests (such as decreased total serum thyroxine, increased triiodothyronine, decreased thyroxine-binding globulin levels, and increased triiodothyronine uptake) (25916,25925,25926,25928).
Gastrointestinal ...Orally, large doses of niacin can cause gastrointestinal disturbances including nausea, vomiting, bloating, heartburn, abdominal pain, anorexia, diarrhea, constipation, and activation of peptic ulcers (4458,4863,12033,26083,93341,96211). These effects may be reduced by taking the drug with meals or antacid, and usually disappear within two weeks of continued therapy (4851,26094). Gastrointestinal effects may be more common with time-release preparations of niacin (11691).
Hematologic ...Orally, sustained-release niacin has been associated with cases of reversible coagulopathy, mild eosinophilia, and decreased platelet counts (4818,25915,26097,93340). Also, there have been reports of patients who developed leukopenia while taking niacin for the treatment of hypercholesterolemia (25916).
Hepatic ...Orally, niacin is associated with elevated liver function tests and jaundice, especially with doses of 3 grams/day or more, and when doses are rapidly increased (4458,4863,6243). The risk of hepatotoxicity appears to be higher with slow-release and extended-release products (4855,4856,4863,6243,11691,12026,12033,93342). Niacin should be discontinued if liver function tests rise to three times the upper limit of normal (4863). There are rare cases of severe hepatotoxicity with fulminant hepatitis and encephalopathy due to niacin (4863,6243,11691). Also, there is at least one case of niacin-induced coagulopathy resulting from liver injury without liver enzyme changes (93340).
Musculoskeletal ...Orally, niacin has been associated with elevated creatine kinase levels (4818,4888). Also, several cases of niacin-induced myopathy have been reported (26100,26111). Concomitant administration of niacin and HMG-CoA reductase inhibitors may increase the risk of myopathy and rhabdomyolysis (14508,25918,26111); patients should be monitored closely.
Neurologic/CNS ...Orally, high-dose niacin has been associated with cases of neuropsychiatric adverse events such as extreme pain and psychosis. Two 65-year-old males taking niacin orally for 5 months for the treatment of dyslipidemias developed severe dental and gingival pain. The pain was relieved by the discontinuation of niacin. The pain was thought to be due to inflammation and pain referral to the teeth (4862). In one case report, a 52-year-old male with no history of psychiatric illness who initially complained of hot flushes when taking niacin 500 mg daily, presented with an acute psychotic episode involving mania after niacin was increased to 1000 mg daily (93350).
Ocular/Otic ...Orally, chronic use of large amounts of niacin has been associated with dry eyes, toxic amblyopia, blurred vision, eyelid swelling, eyelid discoloration, loss of eyebrows and eyelashes, proptosis, keratitis, macular edema, and cystic maculopathy, which appear to be dose-dependent and reversible (4863,6243,26112).
General
...Orally and intravenously, vinpocetine seems to be well tolerated.
Most Common Adverse Effects:
Orally: Anxiety, dizziness, headache, flushing, gastric discomfort, sleep disturbances, and urticaria.
Serious Adverse Effects (Rare):
Orally: Agranulocytosis, arrhythmias, and seizures.
Intravenously: Arrhythmias.
Cardiovascular ...Orally, tachycardia, multifocal extra systoles, transient hypotension and hypertension, and palpitations have been reported with vinpocetine in clinical trials (1789,82118,82152,92936). One case of severe hypotension has been reported with oral vinpocetine (106845). Vinpocetine has also been reported to cause atrial fibrillation and ventricular arrhythmias, with the highest incidence occurring after intravenous or intramuscular administration (1789,82128,68753,82123).
Dermatologic ...Orally, vinpocetine has been reported to cause flushing, skin rash, and urticaria (82118,82120,82153,106845). Intravenously, vinpocetine has been associated with one report of allergic dermatitis (98226).
Gastrointestinal ...Orally, gastric discomfort, upper abdominal pain, nausea, diarrhea, constipation, vomiting, heartburn, difficulty swallowing, and dry mouth have been reported with vinpocetine (1787,1789,10061,10221,82120,82154,82155,92936,106845). Intravenously, diarrhea has been reported with vinpocetine (98226).
Hematologic ...Orally, vinpocetine has been associated with one case report of agranulocytosis (82156) and one case report of ecchymoma of the eyelid in a 60-year-old male 12 hours after a botulinum toxin injection. The patient had been taking vinpocetine 30 mg daily and aspirin 100 mg daily (112878).
Neurologic/CNS ...Orally, anxiety, drowsiness, headache, sleep disturbance, nervousness, excitation, hyperirritability, epileptiform convulsion, and vertigo have been reported with vinpocetine (1787,10221,68772,82118,82120,82151,82152,82154,92936,106845). Intravenously, dizziness has been reported with vinpocetine (98226).
Ocular/Otic ...Orally, vinpocetine has been associated with one case of eyelid edema (106845). Also, one case reports ecchymoma of the eyelid in a 60-year-old male 12 hours after a botulinum toxin injection. The patient had been taking vinpocetine 30 mg daily and aspirin 100 mg daily (112878).
Pulmonary/Respiratory ...Orally, vinpocetine has been associated with one case of severe dyspnea (106845).