Oral Minoxidil
Low dose minoxidil taken as a tablet.
This is a prescription medication. You complete a medical questionnaire and a licensed clinician reviews it before anything is prescribed or dispensed. Not everyone is eligible.
Choosing a plan takes you to our pharmacy to complete the medical questionnaire
Questions about Oral Minoxidil
What is minoxidil?
Minoxidil is a clinically studied medication used to support hair regrowth. It works by improving blood flow to hair follicles and extending the growth phase of the hair cycle. It is available in both topical and oral forms, depending on treatment needs and medical guidance.
How long does it take for minoxidil to work?
Most patients begin noticing reduced shedding or early regrowth within 3-6 months of consistent daily use. Full visible results typically continue to improve over 6-12 months, depending on individual response.
Can minoxidil cause shedding?
Some users experience a temporary increase in shedding when starting treatment. This occurs as weaker hairs are pushed out to make room for new, stronger growth and usually resolves with continued use.
When does minoxidil shedding start?
If shedding occurs, it most often begins within the first 2-8 weeks after starting treatment. Not everyone experiences shedding, and when it does occur, it is usually temporary.
Does minoxidil cause hair loss?
No. Minoxidil does not cause permanent hair loss. Temporary shedding is part of the hair cycle reset and is a sign that follicles are responding to treatment.
Safety information
Before using minoxidil and each time you get a refill please review the following important safety details. This information may be updated. It does not replace discussing your health conditions or treatment plan with your medical provider.
FDA-Approved Uses of Minoxidil
Topical Minoxidil
- 2% and 5% topical minoxidil solutions/foams are FDA-approved for treating hair loss in men and women.
- All compounded topical strengths (7%, 10%, etc.) are considered off-label.
Oral Minoxidil
- Oral minoxidil is FDA-approved for treating symptomatic high blood pressure , not hair loss.
- Oral minoxidil may be prescribed off-label for hair loss when medically appropriate.
- Oral minoxidil combined with other ingredients (e.g., Vitamin D) is a compounded, off-label product and is not FDA-approved for treating hair loss.
What Should I Tell My Healthcare Provider Before Taking Minoxidil?
Please inform your clinician if any of the following apply:
Heart or Cardiovascular History
- High or low blood pressure
- Heart failure
- Previous heart attack
- Pericarditis
- Chest pain or angina
- Irregular heart rhythm
- History of stroke
- Severe swelling in the lower legs
- Pulmonary hypertension
Kidney or Liver Conditions
- Any history of kidney disease or reduced kidney function
- Any history of liver disease or dysfunction
Other Health Considerations
- History of serious mental health conditions
- Pregnancy, trying to become pregnant, or breastfeeding
- Current Vitamin D supplementation*
- High blood calcium levels* *Applies to compounded oral minoxidil with Vitamin D
Pets
Minoxidil can be toxic to some animals. Do not allow pets to lick your hands or any treated areas.
Who Should Not Use Minoxidil?
You should not use minoxidil if you:
- Have ever had an allergic reaction to minoxidil
- Have significant liver disease or dysfunction
- Have high blood calcium levels*
- Are pregnant, may be pregnant, or are breastfeeding
- Are an infant or child
*For compounded formulas containing Vitamin D
Black Box Warning: Serious Cardiac Effects (Oral Minoxidil)
Oral minoxidil carries an FDA black box warning because it is a strong antihypertensive medication.
When used at low doses for hair loss:
- Doses are typically under 5 mg to help reduce cardiovascular risks.
- Even at low doses, serious side effects are still possible and require caution.
Serious Cardiac Risks Include:
- Pericardial effusion (fluid around the heart), which can progress to cardiac tamponade , a life-threatening emergency.
- Severe chest pain
- Shortness of breath
- Fast or irregular heartbeat
- Worsening of existing heart issues, including heart failure
Seek emergency care immediately if you develop severe chest pain, difficulty breathing, or fainting.
Chest Pain Warning
Minoxidil may increase heart rate or cause/worsen chest discomfort. If you develop new or worsening chest pain, contact a clinician or go to the emergency room.
Possible Side Effects of Minoxidil
Common or Mild Side Effects
- Temporary increase in hair shedding (first few weeks)
- Scalp itch or rash
- Flakiness, dryness, or irritation
- Redness at the application site
- Unwanted facial or body hair
- Dizziness or lightheadedness
More Serious or Concerning Side Effects
- Rapid or irregular heartbeat
- Chest pain or palpitations
- Swelling of hands, feet, or face
- Fainting or severe dizziness
This list does not include all potential side effects, medication interactions, or clinical data. Always notify your clinician and/or pharmacist of any side effects you experience.
Learn More About Minoxidil
A detailed scientific review of minoxidil can be found here: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6691938/
Additional prescriber information (oral minoxidil): https://www.pdr.net/drug-summary/?drugLabelId=774
Emergency Situations
If you experience symptoms of an allergic reaction, chest pain, severe dizziness, fainting, or difficulty breathing, call 911 or seek immediate emergency medical care.
You can report negative side effects to the FDA at: www.fda.gov/medwatch or 1-800-FDA-1088
Additional safety information
* Oral minoxidil is not FDA-approved for treating hair loss. It must be prescribed based on an online medical evaluation, and individual responses vary.