Viagra is an unbelievably efficient medicine. It helps men to overcome one of the hardest conditions they deal with. Erectile dysfunction (ED) is a very intimate thing and a great deal of men are abashed to acknowledge that they have it. Plenty of men are afraid that there is no way to overcome their erection problems but with such drug like Viagra they can return to their usual sexual life without any delay.

But similar to any other drugs, men who take the drug may suffer from some Viagra side effects. These side effects are commonly week and go on not more than four or five hours. Usually they include: face flush, headache, stomach disorder.

There are also several of uncommon side effects such as irregular blueish or foggy vision. Some men may experience high sensitivity to light.

If any enquiries on Viagra side effects occur, be sure to ask your doctor. Your physician will definitely tell you if Viagra is ok for you.

Below is the list of some precautions that should be taken when using Viagra:
 
- Do not mix Viagra with nitrates (e.g., nitro-glycerine). This may cause an unexpected, dangerous fall of blood pressure.

- Talk over your general health condition with your physician to guarantee that your body is strong enough to be involved in sexual activity. Sudden chest pain, sickness, or other irritations during sexual activity must be a signal for you to look for urgent medical help.

- If erection lasts more than 4 hours after taking Viagra call your doctor immediately.

- If you are more than sixty-five years old, or have some liver or kidney disease, you should take the lowest 25 mg Viagra dose once in two days period. If you have high blood pressure or prostate trouble your should take lower than usual Viagra dose.

- In very rare cases, an unexpected lessening of sight or hearing may occur when you take Viagra. If you experience such conditions, stop taking Viagra and consult your doctor immediately.