St. John’s Wort may help mild depression, but it can dangerously reduce the effectiveness of warfarin, birth control, antidepressants, and other prescription drugs. Learn which medications it interacts with and why it’s riskier than most people realize.
MAOIs can cause life-threatening reactions when mixed with common OTC cold medicines. Learn which ingredients to avoid, what's safe to take, and how to prevent hypertensive crisis or serotonin syndrome.