Comparative Pharmacology
Head-to-head clinical analysis: MINOXIDIL FOR MEN versus THEROXIDIL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: MINOXIDIL FOR MEN versus THEROXIDIL.
MINOXIDIL (FOR MEN) vs THEROXIDIL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Minoxidil is a direct-acting peripheral vasodilator that opens ATP-sensitive potassium channels in vascular smooth muscle cells, leading to hyperpolarization and relaxation. In hair follicles, it promotes hair growth by increasing blood flow, stimulating prostaglandin synthesis, and prolonging the anagen phase.
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.
Oral: 2.5-5 mg once daily; may increase to 10 mg once daily if needed. Topical: 5% solution, 1 mL applied to dry scalp twice daily; 5% foam, half a capful applied twice daily; 2% solution, 1 mL applied twice daily.
5 mg orally once daily, increased to 10 mg after 4 weeks as tolerated.
None Documented
None Documented
Terminal half-life: 3.5-4.5 hours. Clinical context: Short half-life necessitates twice-daily dosing for hypertension; for topical use, systemic absorption is minimal so half-life less relevant.
Terminal elimination half-life 24-30 hours; steady-state reached after 4-5 days; clinically significant for once-daily dosing
Renal: 85-90% (primarily unchanged drug and metabolites). Biliary/fecal: <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