Hamamelis virginiana 85%. Other Ingredients: Ethanol, Purified Water.
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In 2004, Canada began regulating natural medicines as a category of products separate from foods or drugs. These products are officially recognized as "Natural Health Products." These products include vitamins, minerals, herbal preparations, homeopathic products, probiotics, fatty acids, amino acids, and other naturally derived supplements.
In order to be marketed in Canada, natural health products must be licensed. In order to be licensed in Canada, manufacturers must submit applications to Health Canada including information about uses, formulation, dosing, safety, and efficacy.
Products can be licensed based on several criteria. Some products are licensed based on historical or traditional uses. For example, if an herbal product has a history of traditional use, then that product may be acceptable for licensure. In this case, no reliable scientific evidence is required for approval.
For products with non-traditional uses, some level of scientific evidence may be required to support claimed uses. However, a high level of evidence is not necessarily required. Acceptable sources of evidence include at least one well-designed, randomized, controlled trial; well-designed, non-randomized trials; cohort and case control studies; or expert opinion reports.
Finished products licensed by Health Canada must be manufactured according to Good Manufacturing Practices (GMPs) as outlined by Health Canada.
Below is general information about the effectiveness of the known ingredients contained in the product Regal Witch Hazel. 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
Below is general information about the safety of the known ingredients contained in the product Regal Witch Hazel. Some ingredients may not be listed. This information does NOT represent a recommendation for or a test of this specific product as a whole.
LIKELY SAFE ...when witch hazel water is used topically and appropriately (272).
POSSIBLY SAFE ...when used orally and appropriately (12). In high doses, tannins in witch hazel bark may cause liver or kidney damage (8,12). The volatile oil contains safrole, a known carcinogen, but in amounts too small for concern (4).
CHILDREN: POSSIBLY SAFE
when applied topically and appropriately (67795).
PREGNANCY AND LACTATION:
Insufficient reliable information available; avoid using.
Below is general information about the interactions of the known ingredients contained in the product Regal Witch Hazel. Some ingredients may not be listed. This information does NOT represent a recommendation for or a test of this specific product as a whole.
Below is general information about the adverse effects of the known ingredients contained in the product Regal Witch Hazel. 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
...Topically, witch hazel is generally well tolerated.
Orally, witch hazel seems to be well tolerated at appropriate doses, but high doses may be associated with more adverse effects due to the tannin content in witch hazel.
Most Common Adverse Effects:
Topically: Contact dermatitis.
Serious Adverse Effects (Rare):
Orally: Kidney and liver damage when preparations containing at least 10% tannins are used in high doses.
Dermatologic ...Topically, witch hazel can cause contact dermatitis (6,86505). A small number of people develop redness or burning (67795).
Gastrointestinal ...Witch hazel contains tannins, with the leaf containing 8% to 10% tannins and the bark containing up to 12% tannins (512,10377,93894). Orally, plants with at least 10% tannins can cause gastrointestinal disturbances (12).
Hepatic ...Witch hazel contains tannins, with the leaf containing 8% to 10% tannins and the bark containing up to 12% tannins (512,10377,93894). Orally, plants with at least 10% tannins can cause necrotic conditions of the liver (12).
Oncologic ...Witch hazel contains tannins, with the leaf containing 8% to 10% tannins and the bark containing up to 12% tannins (512,10377,93894). Some evidence suggests that tannins might cause cancer; other evidence shows tannins may prevent it (12). Regular consumption of herbs with high tannin concentrations correlates with increased incidence of esophageal or nasal cancer (12).
Renal ...Witch hazel contains tannins, with the leaf containing 8% to 10% tannins and the bark containing up to 12% tannins (512,10377,93894). Orally, plants with at least 10% tannins can cause kidney damage (12).
