What is the pregnancy category for hydrochlorothiazide?

Hydrochlorothiazide is classified as a Category B drug for pregnancy. This classification means that no risk to the fetus has been demonstrated in animal studies, and there are no well-controlled studies in humans. However, hydrochlorothiazide does pass into breast milk, which may influence its use during breastfeeding. It's essential for healthcare providers to evaluate the risks and benefits when prescribing this medication to pregnant patients, particularly in managing conditions like hypertension or edema. While some drugs fall into categories indicating potential risks (like Category C or Category D), hydrochlorothiazide's categorization as B reflects its relative safety in pregnancy when prescribed appropriately.