Generally, Viagra users experience little or no side effects, but it must be pointed out that there are some to be aware of. Experiencing side-effects can be an indication that your dosage may be too high, and if this is the case, you should contact a qualified doctor or pharmacist for advice on lowering your dose.
The most frequently reported side effects of taking Viagra may include:
Facial flushing (red face), headaches, and nausea.
Less commonly reported side effects may include:
Blue tinge to vision, light sensitivity, nasal congestion, diarrhoea, dizziness, and urinary tract infection.
Like all medications used to treat problems in the modern world, there are some people that may not be suitable to take certain types. This is true of all kinds and genres of medication, which is why it is best to consult a health professional before undertaking any course of treatment.
If you are already taking drugs containing nitrates, such as for treatment of angina, you should not take Viagra as well. This is because Viagra can lower blood pressure, and when combined with nitrates this effect can be multiplied to a potentially dangerous level. If in any doubt, ask your health professional for more information.
Sexual intercourse itself may not be a recommend activity if you have had problems with your heart function and your doctor has already warned of the risks of undertaking any sexual relations. To do so would put a tremendous strain on your heart, and if your doctor has made it clear that you should refrain from sexual intercourse due to your state of health, you should not take Viagra. If you have low blood pressure, have had a recent heart attack or stroke, or have experienced liver problems, please consult your doctor for advice before taking Viagra.
If you are taking medications because you have HIV, you should take medical advice before trying Viagra, as Viagra can work against some drug therapies used to teat HIV.