Supplement-drug interactions

supplement-drug interactions

Supplement-drug interactions happen when a supplement changes the way a prescription or over-the-counter medicine works, either making it less effective or increasing its effects and side effects. These interactions can occur because a supplement affects how the body absorbs, breaks down, or eliminates a drug, or because two substances have similar or opposing effects in the body. For example, some herbs can make blood thinners more likely to cause bleeding, while others can speed up the breakdown of certain medications so they stop working properly. The risk of interactions is higher for people who take multiple medicines, have chronic illnesses, or are older. Understanding these interactions matters because they can lead to treatment failure, unexpected side effects, or dangerous changes in blood pressure, heart rate, or clotting. To reduce risk, always tell your healthcare providers about every supplement you take and ask whether it could interact with your medicines. Pharmacists can also check for interactions and suggest safer alternatives or dosing schedules. If you notice new or worsening symptoms after starting a supplement, stop it and consult your provider promptly. Using products verified by independent testing and following reputable guidance sources can help prevent harmful interactions.