Viagra (Sildenafil Citrate)

Which are the main causes of erectile dysfunction?

There are many substances that can affect potency. Lets try to clear up which are the main of them that may contribute to erectile dysfunction development.

Alcohol. In small doses alcohol exerts stimulating action on central nervous system. In high doses alcohol causes damages to the liver and as a result disturbs metabolism of male sex hormones. Alcohol also affects the processes associated with ejaculation.

Nicotine - is an alkaloid obtained from tobacco. The main negative effect of nicotine consists in spasm of the small blood vessels including those that supply penile muscles with blood. Along with this effect, nicotine damages blood vessels causing atherosclerosis development. Atherosclerosis of the blood vessels disturbs blood flow in the penile muscles. This results in inability to achieve and maintain erection.

Drugs may significantly affect erection mechanisms. Common medications that are known to cause problems with erection achievement include:

• Antidepressants such as tricyclic antidepressants, serotonin reuptake inhibitors
• Antipsychotics used to treat psychological diseases
• Antihypertensives used to treat hypertension
• Antiulcer drugs like cimetidine
• Drugs used to treat prostate glands cancer
• Marijuana and cocaine