Comparative Pharmacology
Head-to-head clinical analysis: MINOXIDIL EXTRA STRENGTH FOR MEN versus THEROXIDIL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: MINOXIDIL EXTRA STRENGTH FOR MEN versus THEROXIDIL.
MINOXIDIL EXTRA STRENGTH (FOR MEN) vs THEROXIDIL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Minoxidil is a potassium channel opener that causes direct vasodilation of peripheral arterioles. It increases blood flow to hair follicles and prolongs the anagen (growth) phase of hair follicles.
Theroxidil is a vasodilator that acts by opening potassium channels in vascular smooth muscle, leading to hyperpolarization and relaxation. It also inhibits platelet aggregation and reduces peripheral vascular resistance.
Topical: 1 mL of 5% solution (50 mg) applied to the scalp twice daily. Maximum daily dose: 2 mL (100 mg).
5 mg orally once daily, increased to 10 mg after 4 weeks as tolerated.
None Documented
None Documented
Terminal elimination half-life is approximately 4.2 hours in patients with normal renal function. However, the pharmacodynamic half-life (duration of antihypertensive effect) is about 24 hours, allowing once-daily dosing.
Terminal elimination half-life 24-30 hours; steady-state reached after 4-5 days; clinically significant for once-daily dosing
Primarily renal (approximately 95% as parent drug and metabolites). Biliary/fecal excretion is minimal (less than 5%).
Approximately 60% renal (15% unchanged, 45% as glucuronide metabolites), 40% fecal/biliary as metabolites
Category A/B
Category C
Vasodilator / Hair Growth Stimulant
Vasodilator