Viagra, known generically as sildenafil, is a widely recognized medication primarily used to treat erectile dysfunction (ED) and, in some cases, pulmonary arterial hypertension. Initially developed by Pfizer, Viagra has revolutionized the treatment of ED since its approval by the FDA in 1998.
Viagra works by inhibiting an enzyme called phosphodiesterase type 5 (PDE5). This action helps to relax blood vessels and increase blood flow to certain areas of the body, notably the penis. When sexually stimulated, this increased blood flow facilitates the achievement and maintenance of an erection. It is important to note that Viagra does not cause an erection without sexual arousal.
Viagra is available in various dosages, commonly 25mg, 50mg, and 100mg. The appropriate dosage is determined by a healthcare provider based on individual needs and medical history. The medication is typically taken about 30 to 60 minutes before sexual activity, and its effects can last for up to four hours. However, it should not be taken more than once a day.
Common side effects of Viagra include headaches, flushing, indigestion, nasal congestion, dizziness, and visual disturbances. Although these side effects are usually mild and temporary, it is crucial to be aware of them. In rare cases, Viagra can cause more serious side effects such as priapism (a prolonged and painful erection), sudden vision loss, or hearing loss. If any severe side effects occur, immediate medical attention is necessary.
It is essential to consult a healthcare professional before starting Viagra to ensure it is safe, especially for individuals with preexisting health conditions or those taking other medications. By following medical advice and guidelines, Viagra can be an effective and safe solution for managing erectile dysfunction, helping to improve the quality of life and intimate relationships for many men.
