No, you do not need a prescription to take health supplements as they are not considered drugs. However, you should always consult your doctor before using any supplement because some of them may have unwanted side effects or interfere with other prescription or over-the-counter medications or supplements you're already taking. Asking your doctor before taking a supplement is especially crucial if you're expecting or breastfeeding, going through surgery, have a medical condition like high blood pressure, heart disease, or diabetes, or are pregnant or nursing. Additionally, never give children below the age of 16 a supplement without first consulting their doctor.