Viagra 25mg Tablets contain sildenafil citrate, a medicine belonging to the phosphodiesterase type-5 (PDE5) inhibitor class. It is prescribed for adult men experiencing erectile dysfunction (ED). Sildenafil works by helping increase blood flow to the penis when a man is sexually stimulated, which can help achieve and maintain an erection.
Important: Viagra does not automatically cause an erection and does not increase sexual desire; sexual stimulation is still required.
Sildenafil helps inhibit the PDE5 enzyme, allowing blood vessels in the penis to relax and increasing blood flow during sexual stimulation. This mechanism can support an erection in men with ED.
Take Viagra exactly as directed by your doctor. The prescribing information states that it is generally taken approximately 1 hour before sexual activity, although it may be taken about 30 minutes to 4 hours beforehand. Do not take more than one dose in a 24-hour period unless specifically directed by a healthcare professional.
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