St. John's Wort ;: The only herb known to interfere with birth control is st. John's wort. Large doses of vit. C can increase side effects but not reduce effectiveness. Certain pharmaceuticals also interfere including antibiotics and seizure medications. See http://www.Mckinley.Illinois.Edu/handouts/pill_interactions_drugs.Html.
Answered 6/16/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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