What should you know before taking viagra?
Men who have recently had a heart attack or stroke are at risk if they engage in sexual activity. Taking viagra increases the risk because it reduces blood pressure. If you are also taking medications to control high blood pressure (e.g. alpha-blockers) or to minimise the risk of clotting, the combination can expose you to real danger particularly if the medication includes a nitrate. You should always seek a doctor’s advice if you have any cardiovascular problems. Similarly, older patients should seek guidance as to dosage - a lower dose being indicated.
You should take viagra between thirty and sixty minutes before you expect sexual activity. The effect should last about four hours. You should not take viagra more than once a day, and do not take more than one erectile dysfunction medication at a time. Finally, it is unwise to consume any significant amount of alcohol.
For the most part, the side effects are uncommon and, if you are unlucky enough to experience them, they are mild and pass quickly. But if you experience any of the following, you should get immediate help:
- an unnaturally long-lasting and painful erection;
- any obvious change in your ability to see or your hearing is reduced;
- chest pain or an irregular heart beat; or
- difficulty in breathing.
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