Generic Name: Minoxidil

  • What is Minoxidil?

    Minoxidil is a medicine used to treat high blood pressure. It works by relaxing and enlarging certain small blood vessels so that blood flows through them more easily.

  • What is the most important information I should know about Minoxidil?

    Minoxidil can cause heart problems. You only have to use it if you have not responded to the highest doses of diuretics (water pills) and two other blood pressure lowering medications.

    Minoxidil can cause serious side effects and should be given under very close supervision. Minoxidil can cause a rapid heart rate, weight gain of more than 5 pounds, difficulty breathing, chest pain, dizziness, lightheadedness, or fainting. Tell your doctor immediately if you experience any of these symptoms. Also, tell your doctor if you experience new or worsening pain in your chest, arm, or shoulder, or if you have signs of severe indigestion (these could be signs of serious heart problems).

    Minoxidil is given with a beta-blocker (such as metoprolol) to prevent an increase in your heart rate. Also, it is given with a water pill to prevent fluid build-up in your body.

  • Who should not take Minoxidil?

    Do not take minoxidil if you have pheochromocytoma (tumor of the adrenal gland).

    Do not take minoxidil if you are allergic to it or any of its ingredients.

  • What should I tell my doctor before I take the first dose of Minoxidil?

    Tell your doctor about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with minoxidil. Also, talk to your doctor about your complete medical history, especially if you have heart or kidney problems. Also, tell your doctor immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

  • What is the usual dosage?

    The information below is based on the dosage guidelines your doctor uses. Depending on your condition and medical history, your doctor may prescribe a different regimen. Do not change the dosage or stop taking your medication without your doctor's approval.

    Adults and children ≥12 years: The recommended initial dose is 5 milligrams (mg) once a day. Your doctor may give you a higher dose depending on your needs.

    Children <12 years: Your doctor will prescribe the appropriate dose for your child, based on their weight.

  • How should I take Minoxidil?

    Take minoxidil as prescribed by your doctor.

  • What should I avoid while taking Minoxidil?

    Do not take guanethidine with minoxidil. If you use these medications together, your blood pressure can decrease.

    Do not stop taking minoxidil without checking with your doctor.

  • What are possible food and drug interactions associated with Minoxidil?

    If minoxidil is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your doctor before combining minoxidil with guanethidine.

  • What are the possible side effects of Minoxidil?

    Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking this drug.

    Side effects may include: hair growth and thickening, heart problems, nausea, rash, swelling, vomiting

  • Can I receive Minoxidil if I am pregnant or breastfeeding?

    The effects of minoxidil during pregnancy are unknown. Do not use minoxidil while you are breastfeeding. Tell your doctor immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

  • What should I do if I miss a dose of Minoxidil?

    If you miss a dose of minoxidil, take it as soon as you remember. However, if it is almost time for your next dose, skip the one you missed and return to your regular dosing schedule. Do not take two doses at once.

  • How should I store Minoxidil?

    Store at room temperature.