Malegra 200 contains sildenafil citrate as its active ingredient, and it is primarily used to treat erectile dysfunction (ED) in men. The duration of action of Malegra 200 can vary among individuals, but here are some general guidelines:

Onset of Action: Malegra 200 typically starts to take effect within 30 minutes to 1 hour after ingestion. Sexual stimulation is necessary for the medication to work.

Duration of Action: The effects of Malegra 200 mg can last for approximately 4 to 6 hours. During this time, men may experience an improved ability to achieve and maintain an erection when sexually aroused.

It's important to note that individual responses to medications can vary. Factors such as age, overall health, and the presence of other medical conditions can influence how long the effects of Malegra 200 last.

Additionally, the duration of action does not mean that an erection will last for the entire period; rather, it indicates the window of time during which the potential for improved erectile function exists. If an erection lasts for more than 4 hours (a condition known as priapism), it is considered a medical emergency, and immediate medical attention is required to prevent potential complications.