Tadalafil — long-acting PDE-5 inhibitor
100 film-coated tablets × 20 mg

• Duration: extended half-life (~36 h) enables flexible timing (“weekend window”).
• Profiles: on-demand 10–20 mg; or daily micro-dose 2.5–5 mg for steady plasma levels (research examples).
• Selectivity: higher PDE-5/PDE-6 ratio → fewer visual side effects vs sildenafil.
• Interactions: avoid nitrates/riociguat; caution with α-blockers & strong CYP3A4 inhibitors; monitor blood pressure.
• QC: ≥ 99% API purity (HPLC); GMP tablet press; tamper-evident cap with scratch-code authenticity.

*For laboratory research use only. Not approved as a medicinal product.*