Viagra is the brand name for ‘’sildenafil citrate’’ along with many others including Caverta, Revatio etc. The generic Sildenafil is manufactured by around 56 companies all around the world. Reviewing history, in 1989, British Pfizer scientists Peter Dunn and Albert Wood created sildenafil for high blood pressure and angina, until researchers found it produced erection. Viagra, was originally invented by the pharmaceutical company Pfizer in 1998. When there was still a patent on Viagra, only Pfizer could manufacture sildenafil in the UK. The FDA approved it as the first pill to treat impotence and in 2005 it approved sildenafil for the treatment of PAH.
Mechanism:
Sildenafil works by inhibiting the cGMP specific …show more content…
• Avoid alcohol
• Avoid grapefruit juice
Viagra has not been recommended for erectile dysfunction in females.
EFFECTS ON LIFE:
Although Viagril is the most controversial drug and has been under discussion for 30 years, it works well in almost all cases. In short it has changed the people’s lives for better. People who are suffering from erectile dysfunction or have been suffering from premature ejaculation can spend a healthy sexual life as viagril is readily available and owing to its fast action as erection can occur often with in thirty minutes of taking the drug and penis can stay erect for quite a while. This all leads to enhanced satisfaction with sexual experience.
Many studies and researches have been conducted to evaluate the uses, side effects and long term affectivity of Viagril, the results of most of which fell in the favour of this drug. People have shown satisfaction with its use and it has proved to improve their sexual lives.
Viagril cannot protect against STDs instead you may run an increased chance of catching an STD due to increased sexual activity unless you take the usual