Minoxidil 5% w

Overview

Minoxidil 5% w is a topical medication primarily used to treat hair loss. It belongs to a class of drugs known as potassium channel openers, originally developed as an oral antihypertensive. When applied to the scalp, it stimulates hair growth in individuals with androgenetic alopecia (male or female pattern baldness).

How Minoxidil 5% w works

Minoxidil is a prodrug that is converted in the body to its active form, minoxidil sulfate. It opens ATP-sensitive potassium channels in smooth muscle cells, causing hyperpolarization and relaxation of blood vessels (vasodilation). While its exact mechanism in hair regrowth is not fully understood, minoxidil is believed to improve blood flow to hair follicles, prolong the anagen (growth) phase, and stimulate follicular cells to produce thicker, longer hair shafts.

Uses

• Male pattern baldness (androgenetic alopecia) in men
• Female pattern hair loss (androgenetic alopecia) in women

Side effects

• Common: scalp irritation, itching, dryness, redness, flaking, or a temporary increase in hair shedding during the first few weeks of use
• Unwanted hair growth on skin areas accidentally exposed to the medication
• Serious (seek immediate medical help): chest pain, rapid or irregular heartbeat, dizziness, fainting, sudden unexplained weight gain, swollen hands or feet, or severe allergic reactions (rash, hives, difficulty breathing)

Precautions

• For external use only; avoid contact with eyes, nose, mouth, or broken/irritated skin.
• Not recommended for sudden or patchy hair loss, or hair loss caused by childbirth, illness, or medications.
• Do not use if pregnant or breastfeeding without consulting a doctor.
• Inform your doctor if you have a history of heart disease, high blood pressure, or allergic reactions to minoxidil.
• May cause temporary hair shedding initially; discontinue use if no improvement after 4 months.
• Avoid using other topical medications or harsh hair products on the treated area unless advised by a healthcare professional.