Viagra Timing and Who Can Take It Safely
How Quickly Does Viagra Work?
Viagra typically begins working within 30 to 60 minutes after taking the tablet. However, the onset time can vary depending on several factors including food intake, individual metabolism, and dosage strength. Taking Viagra on an empty stomach may help it work more quickly, as fatty foods can delay absorption and slow the medication's effectiveness.
Duration of Effects
Once active, Viagra's effects can last approximately 4 to 6 hours. It's important to understand that this doesn't mean an erection will last this entire duration - rather, it's the window during which the medication may help achieve an erection when combined with sexual stimulation. The medication doesn't cause automatic erections and still requires sexual arousal to be effective.
Who Can Take Viagra?
Viagra is suitable for adult men aged 18 and over who experience erectile dysfunction. However, eligibility depends on completing a thorough clinical assessment conducted by a UK-licensed prescriber. This assessment evaluates cardiovascular health, current medications, and medical history to ensure safe use.
At EverydayMeds, patients can choose between branded Viagra or generic sildenafil during checkout. Both contain the same active ingredient (sildenafil citrate) and work identically, with the generic option typically being more cost-effective.
Medical Conditions That May Prevent Use
Certain health conditions make Viagra unsuitable or require special caution. Men with severe heart disease, recent heart attacks or strokes (within six months), severe liver problems, or very low blood pressure should not take Viagra. Additionally, those with hereditary degenerative retinal disorders need careful evaluation before treatment.
Cardiovascular health is particularly important because Viagra can affect blood pressure. During the online consultation process, prescribers carefully review heart conditions and blood pressure medications to ensure treatment safety.
Dangerous Drug Interactions
The most serious interaction occurs with nitrate medications, commonly prescribed for chest pain (angina). This includes GTN sprays, isosorbide tablets, and other nitrate-containing medicines. Combining Viagra with nitrates can cause dangerous drops in blood pressure requiring emergency medical attention.
Other medications requiring caution include alpha-blockers for prostate problems, some blood pressure medications, and riociguat for pulmonary hypertension. Always declare all medications during your consultation, including over-the-counter medicines and supplements.
Starting Treatment Safely
Most men start with a 50mg dose, taken approximately one hour before planned sexual activity. The dose may be adjusted to 25mg or 100mg based on effectiveness and any side effects experienced. Only one tablet should be taken within any 24-hour period, regardless of the strength used.
Common mild side effects include headaches, facial flushing, indigestion, and nasal congestion. These typically resolve as the medication wears off. However, anyone experiencing chest pain, prolonged erections lasting over four hours, or sudden vision changes should seek immediate medical attention.
