“When you take medication prescribed by your doctor, do you bother asking what the drug is really for? Probably not. Beware, though: the drug you’re taking may not actually be FDA-approved for your specific ailment. Got stage fright? You may be taking a blood pressure pill. Can’t sleep? You may be using an antipsychotic drug. Now before you call the medical board, you should understand that this practice, called off-label prescribing, is legal and common.
When a drug is used off-label, it means that the drug is used for a different medical condition other than what it’s approved for. It may be given to the patient differently, e.g. injection instead of oral. The dose prescribed may not follow what’s indicated on the label. Also, a drug approved for a specific stage of a disease may be used at a different stage. In any case, the practice deviates from what’s specifically indicated on the FDA-approved label.”