Generic name: Sildenafil citrate Brand name: Caverta Strength: 25 mg Dosage form: Tablet Drug class: Phosphodiesterase-5 (PDE-5) inhibitor Composition Each tablet contains Sildenafil citrate equivalent to Sildenafil 25 mg Excipients: inactive ingredients (vary by manufacturer) Indications (uses) Erectile dysfunction (ED) in adult men only Sometimes used for pulmonary arterial hypertension (PAH) under specialist care (usually different dosing/brands) How it works Improves blood flow by relaxing blood vessels Works only with sexual stimulation Dosage (general) 25 mg, taken as advised by a doctor Usually taken 30–60 minutes before activity Maximum: once per day Route of administration Oral (by mouth) Swallow with water; best taken on an empty stomach or after a light meal Caverta 25 mg is mainly used to: Treat erectile dysfunction (ED) in adult men → helps improve blood flow to the penis so an erection can occur with sexual stimulation In some cases (under strict medical supervision), sildenafil may also be used for: Pulmonary arterial hypertension (PAH) (usually at different doses and brand names) How it works It relaxes blood vessels and improves blood flow It does not cause an automatic erection; sexual stimulation is still required