Malegra 100 mg should not be taken more than once a day because its active ingredient, sildenafil citrate, has a defined duration of action and requires time to be safely cleared from the body. Taking more than one dose within 24 hours can increase the risk of drug accumulation and lead to exaggerated pharmacological effects.

Sildenafil works by inhibiting phosphodiesterase type 5 (PDE5), which increases cyclic guanosine monophosphate (cGMP) levels and enhances blood flow to the penis during sexual stimulation. While this improves erectile function, excessive dosing can cause overly strong vasodilation throughout the body, leading to side effects such as severe headache, dizziness, flushing, low blood pressure, and fainting.

The drug typically reaches peak levels in the bloodstream within about one hour and has a half-life of around four hours. Even after its effects begin to wear off, residual activity remains in the system. Taking another dose too soon can intensify side effects and increase the risk of cardiovascular complications, especially in individuals with heart disease or those taking blood pressure medications.

Another serious risk of overuse is priapism, a prolonged and painful erection lasting more than four hours. Malegra 100 mg condition requires emergency medical treatment to prevent permanent damage to penile tissue.

For safety, healthcare guidelines recommend limiting Malegra 100 mg to one dose in a 24-hour period. This allows the body enough time to metabolize the medication and reduces the risk of adverse effects while maintaining its therapeutic benefit for erectile dysfunction.