What is viagram?

Viagra is a brand name for the drug sildenafil citrate, which is used to treat erectile dysfunction (ED) in men. It works by increasing blood flow to the penis, which helps men maintain an erection. The drug was first introduced in 1998 and has since become widely used around the world to treat ED. It is available in tablet form and is typically taken about an hour before sexual activity. Some common side effects of Viagra include headache, facial flushing, and upset stomach. It is important to only take Viagra under the guidance of a healthcare provider, as it can have interactions with other medications and can be unsafe for some people with certain medical conditions.