The discovery of Viagra was once considered a groundbreaking achievement in science, significantly improving the intimate lives of countless couples. Moreover, recent research has uncovered additional benefits, such as boosting sports performance. However, as time passes, an increasing number of adverse reactions to this medication have been discovered.

One concerning finding is that even a single dose of Viagra can exacerbate insomnia and, in extreme cases, potentially lead to death. This sleep disturbance is not a direct result of the drug’s intended effect but rather an unintended consequence. In men suffering from insomnia, Viagra can cause a sleep disorder known as apnea, which impedes the flow of oxygen to vital organs, potentially leading to complications or even death.

Apnea is more prevalent in men than women and is typically characterized by snoring and sleep loss. This condition is marked by a sudden cessation of breathing for 10 seconds or more. Additionally, doctors believe that apnea may contribute negatively to the development of erectile dysfunction.

While the primary therapeutic effect of Viagra is undeniable, it is not without its side effects. Most of these side effects are relatively common and may even appear during clinical trials, while some are only documented after the drug has been released to the market. They are usually temporary and pose no significant risk to health.

Some of the most common side effects of Viagra include:

  • Headache and dizziness
  • Impaired visual clarity
  • Changes in light perception
  • Rhinitis
  • Tinnitus or deafness
  • Hot flashes
  • Skin allergic reactions
  • Diarrhea or vomiting
  • Increased palpitations or fainting
  • Tachycardia
  • Decreased blood pressure
  • Prolonged erection (lasting more than 4 hours)

The long-lasting effect of Sildenafil (such as tadalafil, vardenafil, kamagra, suhagra, tadacip, revatio, cenforce), combined with sexual activity and concurrent conditions such as heart attack or stroke, can be fatal. Therefore, individuals with a predisposition to thrombosis are advised to avoid taking this medication.

Viagra is contraindicated for men under 18 years of age or those who have not yet reached puberty, as it may cause hormonal imbalances. Individuals with a known hypersensitivity to the drug’s components may experience allergic reactions.

As the dosage of Viagra increases, so does the risk of adverse effects. To minimize undesirable side effects, it is crucial for a doctor to prescribe the appropriate dosage based on the individual’s health status.