Milk thistle is one of the most commonly taken natural remedies. One reason for this may be that it has few side effects and that its side effects are very rare.
Examples of the most common side effects include diarrhea, rashes and a decrease in blood sugar levels. Because milk thistle is in the same family of plants as ragweed, those who are allergic to ragweed should exercise caution when taking milk thistle, to prevent an allergic reaction. Additionally, milk thistle can be beneficial to the diabetic. Still, those prone to hypoglycemia should consult with a qualified physical before starting a milk thistle treatment.
Rare side effects are limited to upset stomach, bloating, headache, insomnia, weakness and impotency. Also, milk thistle may interfere with oral birth control medications. Women taking such medications should consult with a doctor before taking milk thistle.
Keep milk thistle away from infants and children.
Before starting a milk thistle regimen, women who are breastfeeding or plan to breastfeed in the near feature, women with ovarian, breast or uterine cancers with fibroid tumors and patients taking other herbs should ask their physician if milk thistle is right for them.