Viagra 100mg

Allergic reactions--skin rash, itching, hives, swelling of the face, lips, tongue, or throatAbout this medication

SILDENAFIL (sil DEN a fil) treats erectile dysfunction (ED). It works by increasing blood flow to the penis, which helps to maintain an erection.

How should you use this medication?

Take this medication by mouth with a glass of water. Follow the directions on the prescription label. The dose is usually taken 1 hour before sexual activity. You should not take the dose more than once per day. Do not take your medication more often than directed. Talk to your care team about the use of this medication in children. This medication is not used in children for this condition.

What are the possible side effects of this medicine?

Side effects that you should report to your care team as soon as possible:

Allergic reactions--skin rash, itching, hives, swelling of the face, lips, tongue, or throat
Hearing loss or ringing in ears
Heart attack--pain or tightness in the chest, shoulders, arms, or jaw, nausea, shortness of breath, cold or clammy skin, feeling faint or lightheaded
Heart rhythm changes--fast or irregular heartbeat, dizziness, feeling faint or lightheaded, chest pain, trouble breathing
Low blood pressure--dizziness, feeling faint or lightheaded, blurry vision
New or worsening shortness of breath
Prolonged or painful erection
Stroke--sudden numbness or weakness of the face, arm, or leg, trouble speaking, confusion, trouble walking, loss of balance or coordination, dizziness, severe headache, change in vision
Sudden vision loss in one or both eyes Side effects that usually do not require medical attention (report to your care team if they continue or are bothersome):
Facial flushing or redness
Headache
Nosebleed
Runny or stuffy nose
Trouble sleeping
Upset stomach