What are the side effects and risks of Viagra?
Jun 26, 2025
Source: Cainiu Health
Dr. Yang Ziqi
Introduction
In general, Viagra refers to sildenafil citrate tablets, a medication used to treat male erectile dysfunction. Its potential risks and side effects may include headache, indigestion, nasal congestion, hypotension, cardiac issues, etc. When using sildenafil citrate tablets, it is essential to follow medical instructions, understand the correct administration method and dosage of the medication, as well as possible side effects and corresponding management measures.
Generally speaking, Viagra refers to sildenafil citrate tablets, a medication used to treat male erectile dysfunction. Possible hazards and side effects of sildenafil citrate tablets include headache, indigestion, nasal congestion, hypotension, and increased cardiac burden. Detailed analysis is as follows:
1. Headache
Sildenafil citrate tablets cause vasodilation, which affects the blood vessels in the head and may lead to vascular headaches. In most cases, the headaches are mild and short-lived. Drinking more water to promote drug metabolism can help alleviate the symptoms.
2. Indigestion
The medication may affect normal gastrointestinal motility and secretion of digestive fluids. Gastrointestinal function can be disrupted, reducing the ability to digest food and causing indigestion symptoms such as nausea, vomiting, and stomach discomfort, which are usually not severe.
3. Nasal Congestion
The blood vessels in the nasal cavity dilate under the drug's effects, causing nasal mucosal congestion and resulting in nasal blockage. This is one of the manifestations of the drug's impact on vascular function. Generally, it does not significantly interfere with daily life, although some discomfort may occur.
4. Hypotension
Due to its vasodilatory effect, improper dosage of sildenafil citrate tablets or concurrent use with antihypertensive medications may cause excessive vasodilation and a drop in blood pressure. Patients may experience dizziness, visual disturbances, or even fainting. Individuals with inherently low blood pressure should use it with particular caution.
5. Increased Cardiac Burden
After taking sildenafil citrate tablets, the cardiac workload increases. For patients with pre-existing cardiovascular diseases, such as coronary artery disease or cardiomyopathy, it may trigger serious cardiac events like arrhythmia or myocardial infarction.
When using sildenafil citrate tablets, it is essential to follow medical instructions, understand the correct usage, dosage, possible side effects, and appropriate management measures. If any discomfort or questions arise, promptly consult a physician or pharmacist.
