Viagra is a brand-name prescription drug that is used to treat erectile dysfunction (ED) in males ages 18 years and older. ED is a condition where a man is unable to have or maintain an erection. Viagra contains the drug sildenafil, which belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. These drugs work by increasing blood flow to the penis, which helps a man have and keep an erection. However, Viagra only works if a man is sexually aroused.
Viagra is taken orally, usually as needed, at least 30 minutes but no more than 4 hours before sexual activity. The actual dosage and frequency of use depend on the individuals medical condition and response to treatment. It is important to follow the doctors instructions and not take more than once daily. The most common side effects of Viagra include headaches, feeling sick, indigestion, and dizziness. It is also important to note that Viagra does not protect against sexually transmitted diseases.
It is not recommended to take Viagra with any other product that contains sildenafil or other similar medications for erectile dysfunction-ED or pulmonary hypertension. It is also important to inform the doctor and pharmacist of all prescription and nonprescription medications, vitamins, and nutritional supplements being taken or planned to be taken.
It is important to note that Viagra is only approved for use in males and is not approved for use in females with decreased libido or sexual arousal disorder. At this time, it is not known if Viagra is a safe or effective medication in females.
