Common side effects from using Viagra include:
- dizziness, headache, clouding of consciousness;
- heartburn, nausea, indigestion;
- abnormal vision (blurred vision, change in color vision)
- runny nose and / or nasal congestion, nosebleeds;
- sleep problems (insomnia);
- muscle pain, back pain.
If after taking Viagra you experience the following conditions, you should immediately seek medical help:
- pressing pain in the heart, which can radiate to the arm, shoulder, jaw;
- hard breath;
- vision changes or sudden loss of vision;
- painful erection that lasts more than 4 hours (prolonged erection can damage the penis);
- ringing in the ears or sudden hearing loss;
- arrhythmia (pulse fluctuations);
- swelling of the hands, ankles, or feet;
- convulsions;
- the feeling that you might pass out.
Viagra overdose symptoms
When taking Viagra in the above prescribed dosages prescribed by a doctor or in a dose exceeding the daily one, symptoms of an overdose of this medicine may be noted:
- retrosternal pain, which can radiate (give) to other parts of the body;
- dyspnea;
- painful, persistent erection for more than 4 hours;
- tinnitus;
- interruptions in the work of the heart rhythm;
- orthostatic hypotension (a sharp drop in blood pressure);
- visual impairment.
If you observe such symptoms in yourself, you must stop the subsequent use of Viagra and seek help from a medical specialist.
Effects of an overdose of Viagra
With an overdose of Viagra, there may be various symptoms characteristic of this drug, associated with its mechanism of action. As a result of such an overdose, the following consequences may occur:
- collapse (acute violation of the blood supply to vital organs);
- deafness;
- retinal damage or blindness;
- damage to the penis, due to prolonged erection;
- heart attack (myocardial infarction).
That is why, it is very important to always consult with a healthcare professional before taking Viagra. You must always follow all the doctor’s instructions and read the instructions for the drug.
Interaction of Viagra with other drugs and substances
Viagra can enter into a joint interaction with various medicines and any other substances. It is not recommended to take Viagra with similar erection medications such as avanafil, tadalafil or vardenafil.
Do not take Viagra if you are also taking nitrate medications for chest pain or heart problems. These include nitroglycerin, isosorbide dinitrate, and isosorbide mononitrate. Such simultaneous use can cause a sudden and serious decrease in blood pressure, life-threatening.
In addition, there are a number of other medicines that can interact with Viagra, including:
- medicines to treat high blood pressure (antihypertensives) or a prostate disorder;
- an antifungal agent (eg, ketoconazole or itraconazole);
- antiviral drugs for the treatment of HIV/AIDS.
These are not all pharmacological drugs that can interact with Viagra. For more information about this drug, please contact your healthcare professional.
Note!
Grapefruit or grapefruit juice together with Viagra can increase the toxic effects of the latter on the body and lead to undesirable effects.
What you need to know about Viagra
Before taking Viagra, it is necessary to consult a doctor for a complete history and examination of your health to make sure that this drug can be used in your particular case.