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Can you take Amiloride and Hydrochlorothiazide while pregnant?

Updated Sep 7, 20262 min readAnswer
On this pageShort answer Pregnancy and this blood pressure combination: what to know Common questions Related questions Sources
Short answer

**Amiloride and hydrochlorothiazide is not a first-choice medicine in pregnancy, and most people are switched to a different blood pressure drug before or early in pregnancy.**

Hydrochlorothiazide reduces the volume of fluid in your bloodstream, and use later in pregnancy has been linked to low platelets, low sodium, and low blood sugar in newborns. Diuretics are also not used to treat the ordinary leg and foot swelling that comes with pregnancy. If you take this combination for chronic high blood pressure, your clinician will usually move you to labetalol, nifedipine, or methyldopa. Keep taking your current dose until you have that conversation, because losing blood pressure control creates its own problems for you and the pregnancy. If you took a few doses before you knew you were pregnant, that short exposure is not a reason to panic.

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Pregnancy and this blood pressure combination: what to know

1Call before you stop:Ask your prescriber for a switch plan rather than stopping the pill on your own.
2Plan ahead:If you are trying to conceive, change medicines before pregnancy instead of after a positive test.
3Know the usual replacements:Labetalol, nifedipine, and methyldopa are the blood pressure medicines most often used in pregnancy.
4Skip it for swelling:Puffy ankles in pregnancy are treated with rest, leg elevation, and movement, not with diuretics.
5Review every prescription:ACE inhibitors and ARBs are also stopped in pregnancy, so have your full medicine list checked at once.
6Watch for warning signs:Seek care the same day for a severe headache, vision changes, upper belly pain, or sudden swelling of the face and hands.

Common questions

Can you take Amiloride and Hydrochlorothiazide while pregnant?

Amiloride and hydrochlorothiazide is a combination water pill that is generally avoided in pregnancy. Thiazide diuretics lower blood volume, and use close to delivery can affect a newborn's electrolytes, blood sugar, and platelet count. They are also not used for normal pregnancy swelling. For chronic high blood pressure in pregnancy, clinicians usually switch to labetalol, nifedipine, or methyldopa, which have longer track records. Do not stop on your own, since uncontrolled blood pressure carries real risk. Contact your prescriber as soon as you know you are pregnant or are planning to conceive so the switch can be made safely.

About this page. Written and maintained by the Pymander Health team. Last updated September 7, 2026.

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