Safety
Boxed warning: minoxidil tablets contain a powerful blood pressure medicine that can cause serious side effects, including fluid around the heart (pericardial effusion, sometimes progressing to tamponade) and worsening angina. The label reserves the tablets for high blood pressure that has not responded to other medicines. At hair-loss doses, a 1,404-patient study reported unwanted body and facial hair (15.1%), lightheadedness (1.7%), fluid retention (1.3%) and a fast heartbeat (0.9%). Tell a clinician about any heart condition, chest pain, swelling or sudden weight gain.
Legal status
Prescription only; FDA-approved for other uses. Off-label for hair loss, and the approved tablets carry a boxed warning for serious heart effects, so we list it with warnings. Compounded low-dose capsules and chews are lawful for an individual prescription but are not FDA-approved.
What low-dose oral minoxidil is
Low-dose oral minoxidil contains minoxidil. Generic 2.5 mg and 10 mg tablets are FDA-approved for hypertension, so prescribing them for hair loss is off-label. Chews, gummies and some capsules are compounded.
Not approved for hair loss. Minoxidil tablets are FDA-approved only for severe high blood pressure.
Dosing
Tablet, capsule, chewable or gummy, once a day. For hair loss, prescribers use low doses, often 1.25 mg to 5 mg a day; Strut Health lists 1.25 mg. The hypertension label starts adults at 5 mg a day. Your clinician sets the dose for you.
How well it works
In a 24-week trial of 90 men, 5 mg a day was not superior to 5% topical minoxidil twice a day on hair density; photos favored the oral group on the crown. Unwanted body hair affected 49% and headache 14% of the oral group. Individual results vary.
Low-dose oral minoxidil cost
$18.33 to $35 a month at the providers that publish a monthly price, as of October 2026. For a full breakdown, read How much does minoxidil cost?.