ZENEGRA 50MG

# Sildenafil Citrate 50 mg ## SHORT DESCRIPTION **Sildenafil Citrate 50 mg** is a medicine belonging to the class of **phosphodiesterase type 5 (PDE5) inhibitors**. It is primarily used to treat **erectile dysfunction (ED)** in adult men. Sildenafil improves blood flow to the penis during sexual stimulation, helping a man achieve and maintain an erection sufficient for sexual activity. **Sexual stimulation is required for sildenafil to work.** > **Important:** Sildenafil should **not** be taken with nitrate medicines because the combination can cause a dangerous and potentially life-threatening drop in blood pressure. ## KEY BENEFITS * Helps improve erectile function in men with ED * Helps achieve and maintain an erection when sexually stimulated * Improves blood flow to the penis * Usually starts working within about 30–60 minutes * Effects may last for approximately 4 hours, although this varies between individuals * Does not increase sexual desire by itself * Does not provide an erection without sexual stimulation ## USES / INDICATIONS Sildenafil Citrate 50 mg is primarily indicated for: * **Erectile dysfunction (ED)** in adult men Sildenafil is also available in different strengths and formulations for **pulmonary arterial hypertension (PAH)**. The dosage used for PAH is different from the dosage used for erectile dysfunction. **Do not use the 50 mg ED product as a substitute for PAH treatment.** ## HOW IT WORKS Sildenafil inhibits the **PDE5 enzyme**, which normally breaks down a substance called cyclic guanosine monophosphate (cGMP). During sexual stimulation, nitric oxide increases cGMP levels in the penis. Sildenafil helps preserve cGMP activity, allowing the smooth muscles in penile blood vessels to relax and increasing blood flow into the penis. This makes it easier to achieve and maintain an erection **when sexual stimulation is present**. Sildenafil does not directly cause sexual desire and does not protect against sexually transmitted infections. ## DOSAGE & ADMINISTRATION ### Usual adult dose for erectile dysfunction * The usual starting dose is **50 mg taken approximately 1 hour before sexual activity**. * Depending on effectiveness and tolerability, a healthcare professional may adjust the dose to **25 mg or 100 mg**. * Do not take sildenafil more than **once in a 24-hour period**. * It can be taken with or without food. * A high-fat meal may delay the onset of action. * Sexual stimulation is required for sildenafil to work. ### Older adults and certain medical conditions A lower starting dose may be appropriate for some people, including those with significant kidney or liver impairment or those taking certain interacting medicines. Always follow your doctor's prescribed dose. ### Missed dose Sildenafil for erectile dysfunction is generally taken **as needed**, so there is no regular daily dose to make up if a dose is missed. ## SIDE EFFECTS Common side effects may include: * Headache * Flushing * Indigestion * Nasal congestion * Dizziness * Nausea * Temporary visual changes * Muscle aches or back pain These effects are often mild and temporary. ### Serious side effects Seek **immediate medical attention** if you experience: * An erection lasting **more than 4 hours (priapism)** * Sudden loss or significant decrease of vision * Sudden loss or significant decrease of hearing * Severe chest pain * Fainting or severe dizziness * Severe allergic reaction * Difficulty breathing or facial/throat swelling An erection lasting more than 4 hours requires urgent treatment to prevent permanent damage to the penis. ## PRECAUTIONS & WARNINGS ### Nitrate medicines — DO NOT COMBINE **Do not take sildenafil with nitrates**, including medicines such as: * Nitroglycerin * Isosorbide mononitrate * Isosorbide dinitrate The combination can cause a potentially dangerous fall in blood pressure. This warning also applies to **recreational drugs containing nitrates ("poppers")**. ### Heart disease Tell your doctor if you have heart disease, angina, heart failure, irregular heart rhythms, or have recently experienced a heart attack or stroke. Sexual activity itself may place additional strain on the heart, so your doctor should determine whether sexual activity is appropriate for you. ### Low blood pressure Sildenafil can lower blood pressure. Tell your doctor if you have very low blood pressure or are taking medicines that lower blood pressure. ### Alpha-blockers Sildenafil may cause symptomatic low blood pressure when combined with **alpha-blockers** such as tamsulosin, doxazosin, or alfuzosin. Medical supervision and appropriate dosing are important. ### Eye disorders Use caution if you have certain inherited eye conditions or a history of non-arteritic anterior ischemic optic neuropathy (NAION). Seek medical attention for sudden vision loss. ### Deformity of the penis Tell your doctor if you have anatomical abnormalities of the penis or conditions that may predispose you to prolonged erections. ### Kidney or liver disease Patients with significant kidney or liver impairment may require a lower dose. ### Alcohol Large amounts of alcohol may temporarily reduce the ability to achieve an erection and can increase dizziness or low blood pressure when combined with sildenafil. ## DRUG INTERACTIONS Important interactions include: * **Nitrates** such as nitroglycerin and isosorbide medicines — **contraindicated** because of potentially dangerous hypotension. * **Riociguat** — should not be combined with sildenafil because of the risk of significant blood pressure reduction. * **Alpha-blockers** — may increase the risk of symptomatic low blood pressure. * **Strong CYP3A4 inhibitors** such as ritonavir and some azole antifungals — may substantially increase sildenafil levels. * Certain **macrolide antibiotics**, such as erythromycin or clarithromycin, may increase sildenafil exposure. * Other **PDE5 inhibitors** or ED treatments — combination is generally not recommended. * Some antihypertensive medicines — may have additive blood-pressure-lowering effects. Always tell your doctor or pharmacist about all prescription medicines, OTC medicines, supplements, and recreational substances you use. ## STORAGE INFORMATION * Store Sildenafil Citrate 50 mg according to the manufacturer's instructions. * Keep at room temperature. * Protect from excessive heat, moisture, and direct sunlight. * Keep tablets in their original packaging. * Keep out of reach and sight of children. * Do not use after the expiry date. * Do not use tablets if the packaging is damaged or the medicine appears abnormal. ## PRESCRIPTION STATUS **Sildenafil Citrate 50 mg is generally a prescription medicine**, although availability and dispensing requirements vary by country. Because sildenafil can cause significant interactions with nitrates and certain cardiovascular medicines, it should be obtained and used under appropriate medical supervision. ## GENUINE MEDICINE ASSURANCE To help ensure you receive genuine Sildenafil Citrate 50 mg: * Purchase only from a licensed and reputable pharmacy. * Check the medicine name and **50 mg strength**. * Verify the manufacturer's information. * Check the batch number and expiry date. * Ensure the packaging is sealed and undamaged. * Avoid medicines with suspicious or altered packaging. * Do not purchase sildenafil from unauthorized online sellers. * Consult a pharmacist if you have concerns about the authenticity of the product. ## FAQ SECTION ### What is Sildenafil Citrate 50 mg used for? Sildenafil Citrate 50 mg is primarily used to treat **erectile dysfunction (ED)** in adult men. ### How does Sildenafil 50 mg work? Sildenafil inhibits PDE5, helping increase cGMP activity and blood flow in the penis during sexual stimulation. This helps achieve and maintain an erection. ### How long does Sildenafil 50 mg take to work? Sildenafil commonly begins to work within **30–60 minutes**, although the timing can vary between individuals. ### How long does Sildenafil 50 mg last? The effects can last for approximately **4 hours**, although this does not mean you will have a continuous erection. Sexual stimulation is still required. ### Does Sildenafil 50 mg increase sexual desire? No. Sildenafil improves the physical ability to achieve an erection but does not directly increase sexual desire or libido. ### Can I take Sildenafil 50 mg every day? For erectile dysfunction, sildenafil is generally taken **as needed**, with no more than one dose in 24 hours unless specifically directed by a healthcare professional. ### Can I take Sildenafil 50 mg with food? Yes. Sildenafil can generally be taken with or without food. However, a high-fat meal may delay how quickly it starts working. ### Can I take Sildenafil 50 mg with alcohol? Large amounts of alcohol may reduce erectile function and can increase dizziness or low blood pressure. Limiting alcohol is advisable. ### Can I take Sildenafil with nitrates? **No.** Sildenafil must not be taken with nitrate medicines such as nitroglycerin or isosorbide mononitrate/dinitrate. This combination can cause a dangerous drop in blood pressure. ### Can Sildenafil be taken with blood pressure medicines? Sildenafil may be used with some blood-pressure medicines, but it can further lower blood pressure. Tell your doctor about all antihypertensive medicines you take. ### Can I take Sildenafil with Tamsulosin? The combination may increase the risk of low blood pressure and dizziness. It may sometimes be used under medical supervision with appropriate dosing. ### Can Sildenafil be taken with other erectile dysfunction medicines? Combining sildenafil with other PDE5 inhibitors or ED treatments is generally not recommended because it may increase the risk of side effects and low blood pressure. ### Does Sildenafil cure erectile dysfunction? Sildenafil treats the symptoms of ED while it is active but does not necessarily cure the underlying cause of erectile dysfunction. ### Does Sildenafil work without sexual stimulation? No. Sexual stimulation is necessary for sildenafil to produce an erection. ### Can Sildenafil cause headache? Yes. **Headache is one of the most common side effects** of sildenafil. ### Can Sildenafil affect eyesight? Temporary visual changes, such as altered color perception or blurred vision, can occur. **Sudden or significant vision loss requires immediate medical attention.** ### What happens if an erection lasts more than 4 hours? An erection lasting more than 4 hours is a medical emergency called **priapism**. Seek immediate medical attention to prevent permanent damage. ### Can women take Sildenafil 50 mg? Sildenafil 50 mg is primarily approved for erectile dysfunction in men. It should not be used by women for sexual dysfunction unless specifically prescribed for another medical indication. ### Can Sildenafil be used by older men? Sildenafil can be used by some older men, but medical evaluation is important because cardiovascular conditions and interacting medicines become more common with age. ### Can Sildenafil be taken during pregnancy? Sildenafil for erectile dysfunction is not indicated for use in women. Pregnant women should not use sildenafil unless specifically prescribed for an appropriate medical condition by a specialist. ### Can Sildenafil be taken with antibiotics? Some antibiotics, particularly certain macrolides such as erythromycin or clarithromycin, can increase sildenafil levels. Always tell your doctor about all medicines you are taking. ### What should I do if I miss a Sildenafil dose? Sildenafil for ED is usually taken as needed, so there is generally no missed dose to make up. ### What happens if I take too much Sildenafil? An excessive dose can increase the risk of headache, flushing, dizziness, low blood pressure, vision changes, and prolonged erection. Seek medical advice if you take more than prescribed. ### Is Sildenafil 50 mg available without a prescription? Sildenafil is generally a **prescription medicine**, although legal availability varies by country. ### Is Sildenafil the same as Viagra? **Viagra** is a brand name for sildenafil. Sildenafil is the active ingredient responsible for its therapeutic effect. Different sildenafil products may be manufactured by different companies. ## MEDICAL DISCLAIMER This information about **Sildenafil Citrate 50 mg** is provided for educational and informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Sildenafil can cause significant interactions with certain medicines, particularly **nitrates**, and may not be appropriate for people with certain cardiovascular conditions. The appropriate dose depends on age, health status, kidney and liver function, and other medicines being used. **Do not take Sildenafil Citrate 50 mg with nitrate medicines or recreational nitrate-containing substances. Do not start, stop, or change the dose without consulting a qualified healthcare professional.** Seek immediate medical attention for an erection lasting more than 4 hours, sudden vision or hearing loss, severe chest pain, fainting, or a severe allergic reaction. Always follow the approved product information and the specific instructions provided by your doctor or pharmacist.