Malegra 200 mg contains sildenafil. A 200 mg dose is higher than the usual maximum recommended dose for Erectile dysfunction, which is typically 100 mg once per day. Because of this, it is not suitable for everyone and should only be used if specifically advised by a qualified healthcare professional. Reasons it may not be appropriate include: Heart conditions: Sildenafil affects blood vessels and can lower blood pressure. It may be unsafe for people with certain heart diseases or those advised to avoid sexual activity. Use of nitrate medications: Taking sildenafil with nitrates (such as nitroglycerin) can cause a dangerous drop in blood pressure. Malegra 200 mg other medications: Some drugs, including certain alpha-blockers and medications that affect liver enzymes, can interact with sildenafil. Liver or kidney disease: These conditions can slow the body's ability to clear sildenafil, increasing the risk of side effects. Certain eye disorders: People with some inherited retinal diseases or a history of vision loss related to the optic nerve may be advised to avoid sildenafil. Higher risk of side effects at high doses: A 200 mg dose may increase the likelihood of headache, flushing, dizziness, indigestion, nasal congestion, vision changes, and prolonged erections (priapism). If you experience chest pain after taking sildenafil, or an erection lasting more than 4 hours, seek emergency medical care immediately. If your erections are not adequate with a standard dose (such as 50 mg or 100 mg), it's important to discuss this with a healthcare professional rather than increasing the dose on your own. They can evaluate whether another treatment, a different medication, or investigation of underlying causes would be more appropriate.