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Viagra contraindications and side effects: what are they?

Although, Viagra is considered as safe and well tolerated medication, doctors all over the world recommend to pay attention on pointed Viagra contraindications and side effects. In this article we have gathered necessary info concerning Viagra contraindications and possible side effects, which may occur in some patients due to inappropriate use of the drug.

Viagra is not recommended to be used in such categories of people:

  • The person experiencing allergic reactions to any component. The symptoms of allergy on the remedy can be shown in shortness of breath, swelling of the lips or face, itching, rash. In case of noticing such symptoms you should seek immediate medical attention.
  • People who are taking medicines, which are nitric oxide donator used for the treatment of angina pectoris, or contain in their composition nitrates. In this case, there is a high probability of side effects by increasing the effects of these drugs. The use of Viagra should be discussed with your doctor.
  • If a person has heart, liver or kidney problems, in order to avoid the appearance of side effects, before taking Viagra in Canada it is advisable to consult the doctor. States in which reception of Viagra may be contraindicated:

- Modification of red blood cells (sickle cell-anemia), the deformation of the penis (Peyronie's disease), cancer of the bone marrow (myeloma multiple). When you receive Viagra you should follow some special security measures to prevent the formation of various side effects.

- Retinitis pigmentosa (an eye disease - in clinical practice is very rare), hemophilia, stomach ulcers and other diseases that cause internal bleeding. In such diseases Viagra is contraindicated for use, because it can cause side effects (although there are no officially confirmed data about this).

- It is worth mentioning the fact that Viagra is contraindicated for use in combination with other drugs intended for treatment of erectile dysfunction. Interaction of Viagra with other therapeutic agents:

Viagra therapy should be agreed with the doctor in cases where there is the use of other therapeutic agents, since it can interact with certain types of drugs. At almost all men Viagra effect is observed at the optimal reception of 50mg. If you plan to increase the dose, you should consult the doctor, as in this case, there are some contraindications to the reception.

Viagra should be taken in 55-60 minutes prior to the intended intimacy. The drug is not allowed to be used more than once a day. Viagra causes erections only in the presence of sexual stimulation.

In different men the drug action may begin on different time. Typically, the onset of action of Viagra is in the range of 30 minutes - 1 hour. Deciding to obtain maximum efficacy from Viagra intake, try to follow all necessary tips, which will prescribe to you your doctor.