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Important Note

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. Consult your healthcare professional before using this drug.



COMMON BRAND NAME(S): Rogaine, Ronoxidil


This medication is used topically to promote hair growth in the treatment of male pattern baldness.

How To Use

Clean and dry the scalp area before applying the medication. To apply, gently rub approximately 20 drops of the medication to the desired area twice a day. Wash hands thoroughly after application. Larger or more frequent doses will not speed up or increase chance of hair growth, but will increase the chance of side effects. Do not use this medication with any other topical scalp medications.

Side Effects

This medication may cause burning, stinging or redness when first applied to the skin. This should disappear in a few days as your body adjusts to the medication. If these effects persist or worsen, inform your doctor. If excessive amounts of this medication are absorbed through the skin, headache, nausea, vomiting, dizziness, change in heart rate or blood pressure, chest pain, swelling of hands or feet, or fatigue may occur. Look for these effects and inform your doctor if they occur. If you notice other effects not listed above, contact your doctor or pharmacist.


Do not apply minoxidil to a sunburned or irritated scalp. Using the medication more often, applying more of it than as directed, or applying it to an irritated or sunburned scalp can cause the drug to be absorbed into your body and result in serious side effects. Women who are pregnant or breast-feeding should inform their doctors. Tell your doctor your medical history, especially of: heart problems, kidney problems, liver problems, other scalp conditions, allergies (especially drug allergies).

Drug Interactions

Before using minoxidil, tell your doctor of any over-the-counter or prescription medications you are taking, especially of: guanethidine, other drugs used for high blood pressure. Do not start or stop any medicine without doctor or pharmacist approval.


If overdose is suspected, contact your local poison control center or emergency room immediately. This medicine may be harmful if swallowed.


At first, hair growth will be soft, colorless and barely visible. With further treatment new hair should be the color and thickness of other scalp hair. Evidence of hair growth may take up to 4 months or longer. If this does not occur, contact your doctor about continuing therapy. If treatment is stopped, new hair will be shed within a few months. This drug is to be used topically only. Accidental ingestion can produce significant side effects. Keep this and all medications out of the reach of children. Do not allow anyone else to use your minoxidil.

Missed Dose

If you miss a dose, use it as soon as remembered; do not use if it is almost time for the next dose, instead, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up.


Store at room temperature away from sunlight. Avoid freezing.