Viagra (Sildenafil) belongs to a group of medications called phosphodiesterase type 5 inhibitors. It is used for the treatment of Erectile Dysfunction (male impotence). It helps to achieve and keep an erection sufficient for sexual activity. It does this by allowing a greater blood flow into the penis when a man is sexually aroused. It works only with sexual stimulation and does not incre...More on Viagra indication

Cialis (Tadalafil) belongs to a group of medications called phosphodiesterase type 5 inhibitors. It is used to treat Erectile Dysfunction (male impotence). It helps to achieve and maintain an erection sufficient for sexual activity to occur. It does this by allowing a greater flow of blood into the penis when a man taking the medication is sexually aroused. It works only with sexual stimulation an...More on Cialis indication

Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent. The side effects listed below are not experienced by everyone who takes Viagra (Sildenafil). If you are concerned about side effects, discuss the risks and benefits of Viagra (Sildenafil) with your doctor. T...More on Viagra side effects

Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent. The side effects listed below are not experienced by everyone who takes Cialis (Tadalafil). If you are concerned about side effects, discuss the risks and benefits of Cialis (Tadalafil) with your doctor. The fol...More on Cialis side effects

Do not take Viagra (Sildenafil) if you: are allergic to Viagra (Sildenafil) or any ingredients of Viagra (Sildenafil) are taking any type of nitrate medication in any form (oral, sublingual [under the tongue], skin patch, or spray). Nitrate medications include Nitroglycerin and related medications that are used for the relief of chest pain or Angina. They also...More on Viagra contraindications

Do not take Cialis (Tadalafil) if you: are allergic to Cialis (Tadalafil) or any ingredients of Cialis (Tadalafil) have had vision loss caused by an eye condition called nonarteritic anterior ischemic optic Neuropathy (NAION) are taking the medication Riociguat or other similar medications are taking (or have taken in the past 48 hours) any type of nitrate medication in any form (oral, sub...More on Cialis contraindications

There may be an interaction between Viagra (Sildenafil) and any of the following: Abiraterone alcohol alpha agonists (e.g., Clonidine, methyldopa) alpha-blockers (e.g., doxazosin, Terazosin) Alprostadil Amiodarone angiotensin converting enzyme inhibitors (ACEIs; e.g., Captopril, Enalapril, Ramipril)...More on Viagra precautions

There may be an interaction between Cialis (Tadalafil) and any of the following: Abiraterone alcohol alpha-blockers (e.g., Alfuzosin, doxazosin, Terazosin) Alprostadil alpha agonists (e.g., Clonidine, methyldopa) Amiodarone angiotensin-converting enzyme inhibitors (ACEIs; Captopril, Enalapril, Ramipril) angiotensin receptor blockers (ARBs; e.g., candasartan, Irbesartan, Losartan)...More on Cialis precautions