Viagra 25 mg is used the treatment of erectile dysfunction. World's most famous medicine for ED. Sildenafil Viagra  belongs to a group of drugs known as PDE5 (phosphodiesterase) inhibitors. They relax blood vessels which allow for an increased blood flow to the penis to help achieve and maintain erections. Take Viagra approximately an hour before you plan to have sex, the effects last around 4 hours, so you can relax and enjoy your experience. 

How Does Viagra Works?

Tadalafil works in a similar way to Generic  Viagra and Sildenafil, except once taken, the effects can last up to 36 hours. A Viagra tablet is capable of displaying its effects within 30 to 60 minutes of its consumption by a male. Do not break or chew Viagra pill swallow it whole. Whenever you take this medicine try to avoid alcohol and grape juice. If you have problems with your heart. Your doctor should in that case carefully check whether your heart can take the additional strain of having sex.

Available Viagra Dosages: 

Viagra comes as an oral tablet and is available in three dosages:

• 50mg: This is the normal starting Viagra dose . Your healthcare provider may start you on this dose if you have ED and want to try medication.

• 100mg: This is the highest dose of Sildenafil Viagra. It’s usually prescribed to men with severe ED who don’t notice improvements at 50mg.

• 25mg: This is the lowest dose of Viagra pill. It’s usually prescribed to men with mild erectile dysfunction who only need a little bit of help getting and staying hard.

Sildenafil, the active ingredient in Viagra, is also available in a 20mg, which is used to treat pulmonary arterial hypertension (PAH).