Slippery Elm Bark Powder by Blooms Health Products

INSUFFICIENT RELIABLE EVIDENCE to RATE

• Cancer. Oral slippery elm has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Retrospective population research has found that taking a specific product containing burdock root, Indian rhubarb, sheep sorrel, and slippery elm bark (Essiac, Resperin Canada Limited) does not improve quality of life in breast cancer patients and may have a negative effect on physical well-being (37419).
• Constipation. Although there has been interest in using oral slippery elm for constipation, there is insufficient reliable information about the clinical effects of slippery elm for this purpose.
• Cough. Although there has been interest in using lozenges containing slippery elm for cough, there is insufficient reliable information about the clinical effects of slippery elm for this purpose.
• Diarrhea. Although there has been interest in using oral slippery elm for diarrhea, there is insufficient reliable information about the clinical effects of slippery elm for this purpose.
• Inflammatory bowel disease (IBD). Although there has been interest in using oral slippery elm for IBD, including Crohn disease and ulcerative colitis, there is insufficient reliable information about the clinical effects of slippery elm for this purpose.
• Irritable bowel syndrome (IBS). Oral slippery elm has only been evaluated in combination with other ingredients; its effect when used alone is unclear. Details: Preliminary clinical research shows that taking a specific formulation containing slippery elm inner bark, lactulose, oat bran, and licorice root can improve stool frequency by 20% and reduce abdominal pain and bloating in people with constipation-predominant IBS when compared to baseline. Also, taking a different formulation containing slippery elm inner bark, bilberry fruit, cinnamon quilts, and agrimony aerial parts can reduce abdominal pain, bloating, and flatulence in people with diarrhea-predominant IBS when compared to baseline, although stool frequency is increased in these individuals as well (35462). It is unclear if these findings are due to slippery elm, other ingredients, or the combination.
• Peptic ulcers. Although there has been interest in using oral slippery elm for peptic ulcers, there is insufficient reliable information about the clinical effects of slippery elm for this purpose.
• Pharyngitis. It is unclear if lozenges containing slippery elm are beneficial in patients with sore throat. Details: Slippery elm has demulcent properties and, when added to lozenges, may soothe sore throats (272,512,1740). However, clinical research is lacking. More evidence is needed to rate slippery elm for these uses.

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POSSIBLY SAFE ...when used orally and appropriately (4,12,272,512,1740).

PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using. Slippery elm bark has historically been inserted into the cervix to induce abortion. As a result, slippery elm has been reported in some sources to have abortifacient activity. However, there is no reliable information available about whether slippery elm has abortifacient activity when taken orally.

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ORAL DRUGS Interaction Rating = Moderate Be cautious with this combination. Severity = Moderate •  Occurrence = Possible •  Level of Evidence = D Theoretically, slippery elm may slow the absorption and reduce serum levels of oral drugs.  Details Slippery elm inner bark contains mucilage, which may interfere with the absorption of orally administered drugs (19).

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General ...Orally, slippery elm seems to be well tolerated. A thorough evaluation of safety outcomes with topical use of slippery elm has not been conducted.

Dermatologic ...Topically, slippery elm extracts can cause contact dermatitis. The pollen is an allergen (6). Contact dermatitis and urticaria have been reported after exposure to slippery elm or an oleoresin contained in the slippery elm bark (75131).

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