Side Effects of Viagra
Oct 15, 2020
Source: Cainiu Health
Dr. Cao Zhiqiang
Introduction
Viagra typically refers to sildenafil citrate tablets, which are primarily used to treat erectile dysfunction. However, the use of this medication may cause adverse effects such as gastrointestinal discomfort, neurological abnormalities, visual disturbances, hepatic or renal impairment, and allergic reactions. When taking sildenafil citrate tablets, patients must strictly follow their physician’s instructions and avoid self-administration or擅自 altering the dosage without medical guidance.
Viagra typically refers to sildenafil citrate tablets, primarily used for the treatment of erectile dysfunction. However, use of this medication may cause adverse effects such as gastrointestinal discomfort, neurological abnormalities, visual impairment, hepatic and renal dysfunction, and allergic reactions. A detailed analysis follows:
1. Gastrointestinal discomfort: Sildenafil citrate tablets exert a certain degree of irritation on the gastrointestinal tract, potentially causing nausea, vomiting, anorexia, dyspepsia, diarrhea, and gastric pain after administration.
2. Neurological abnormalities: Prolonged or excessive use of sildenafil citrate tablets may impair neurological function, leading to headache, dizziness, tremor, neuralgia, insomnia, hypersomnolence, delayed reaction time, and increased muscle tone; in severe cases, it may even result in altered consciousness.
3. Visual impairment: As sildenafil citrate is a phosphodiesterase type 5 (PDE5) inhibitor—and PDE5 is present in the retina—prolonged or excessive dosing may damage retinal tissue, resulting in transient vision loss, decreased visual acuity, photophobia, and transient visual disturbances.
4. Hepatic and renal dysfunction: Since sildenafil citrate is metabolized and eliminated via the liver and kidneys, accumulation of the drug in the body—particularly in patients with preexisting hepatic or renal impairment—may exacerbate organ damage and lead to declining hepatic and renal function.
5. Allergic reactions: Some patients may exhibit hypersensitivity to sildenafil citrate, manifesting as skin rash, urticaria, pruritus, facial flushing, facial edema, shock, or chills.
Patients must strictly adhere to their physician’s instructions when using sildenafil citrate tablets and avoid self-administration or dose adjustments without medical supervision. Additionally, maintaining a light, bland diet during treatment may enhance therapeutic efficacy.
