Minoxidil is available in over-the-counter (OTC) medicines that help address general thinning of head hair. Minoxidil causes widening of the blood vessels, which can help regrow hair on the top of the scalp. It can be found in single-ingredient hair regrowth products for both men and women.

Minoxidil is approved by the U.S. Food and Drug Administration (FDA) to help hair regrowth and is safe and effective when used according to the Drug Facts label directions. Hair regrowth products containing minoxidil are available in different dosage strengths and labeled to meet the unique needs of men and women. Women should never use a minoxidil hair growth treatment that is only intended for use in men. Hair regrowth is different for each person, and not everyone responds to minoxidil.

  • You are pregnant or breastfeeding.
  • Your degree of hair loss is different than what is shown on the side of the medicine package because that product may not work for you.
  • You have no family history of hair loss.
  • Your hair loss is sudden or patchy.
  • Your hair loss is associated with childbirth.
  • You do not know the reason for your hair loss.
  • Your scalp is red, inflamed, infected, irritated, or painful.
  • You use other medicines on the scalp.
  • Chest pain, rapid heartbeat, or dizziness occurs.
  • You experience sudden, unexplained weight loss.
  • Your hands or feet swell.
  • Scalp irritation or redness occurs.
  • You experience unwanted facial hair growth.
  • You do not see hair regrowth after four months.
  • You accidentally swallow the medicine. Immediately contact a healthcare provider or the poison control national helpline at 800.222.1222.
  • Do not use a hair regrowth treatment on a child under the age of 18.
  • Never use a hair regrowth treatment on a baby or young child.
  • Click here for more information on giving OTCs to children.