Complete Quick Reference for Viagra Treatment
How Viagra Works for Men
Viagra contains sildenafil citrate, which belongs to a class of medications called PDE5 inhibitors. When a man becomes sexually aroused, Viagra blocks the phosphodiesterase type 5 enzyme, allowing increased blood flow to the penis. It's important to understand that Viagra does not cause automatic erections - sexual stimulation is still required. The medication works within 30-60 minutes of taking it, and its effects can last between 4-6 hours, though this doesn't mean an erection will last this long.
Viagra Dosage Quick Facts
Viagra is available in three strengths: 25mg, 50mg, and 100mg tablets. Most men start with the 50mg dose, which can be adjusted up to 100mg or down to 25mg based on effectiveness and how well it's tolerated. The maximum safe dose is one tablet per 24-hour period. For optimal results, take Viagra 30-60 minutes before planned sexual activity. High-fat meals may delay how quickly the medication works, so consider taking it on an empty stomach for faster effects.
Who Can Take Viagra
Viagra is prescribed for adult men aged 18 and over who experience erectile dysfunction. All patients must complete a clinical assessment with a UK-licensed prescriber before treatment can begin. This assessment evaluates cardiovascular health, current medications, and medical history to ensure Viagra is safe and appropriate. The medication is not suitable for women, men under 18, or those taking certain medications, particularly nitrates used for heart conditions.
Important Safety Information
Several critical safety facts apply to Viagra use. Never combine Viagra with nitrate medications such as GTN spray or isosorbide, as this can cause dangerous drops in blood pressure. Men with severe heart disease, recent heart attack or stroke, or very low blood pressure should not take Viagra. The medication should also be avoided by those with severe liver problems or hereditary eye conditions affecting the retina.
Common Side Effects to Expect
Headache is the most common side effect, experienced by more than 1 in 10 men taking Viagra. Other frequent side effects include facial flushing, indigestion, nasal congestion, dizziness, and temporary visual changes such as a blue tinge or light sensitivity. Most side effects are mild and temporary, often becoming less noticeable with continued use. These effects typically resolve within a few hours as the medication leaves your system.
When to Seek Immediate Medical Help
Certain rare but serious side effects require emergency medical attention. Priapism, a painful erection lasting more than 4 hours, is a medical emergency that can cause permanent damage if not treated promptly. Sudden vision loss in one or both eyes, sudden hearing loss, chest pain during sexual activity, or signs of severe allergic reaction (difficulty breathing, swelling, severe rash) also require immediate medical care.
Viagra vs Generic Sildenafil
Viagra is the branded version manufactured by Pfizer, whilst sildenafil is the generic equivalent containing the same active ingredient. Both medications have identical effectiveness and safety profiles - the main difference is cost, with generic sildenafil typically being significantly less expensive. At EverydayMeds, patients can choose between branded Viagra or generic sildenafil at checkout, allowing you to select based on personal preference and budget considerations.
Lifestyle Factors That Affect Effectiveness
Several lifestyle factors can influence how well Viagra works. Excessive alcohol consumption may reduce effectiveness and worsen side effects. Smoking restricts blood flow and may limit the medication's benefits. Maintaining a healthy weight, managing stress, and staying physically active can all support better treatment outcomes. These lifestyle modifications work alongside medication to provide comprehensive ED management.
