Kamagra 100 mg contains sildenafil citrate, a medicine that helps improve blood flow to the penis during sexual stimulation. It works by inhibiting the phosphodiesterase type 5 (PDE5) enzyme, which helps maintain higher levels of cyclic guanosine monophosphate (cGMP), a chemical that relaxes smooth muscles in blood vessels. This relaxation allows more blood to enter the penile erectile tissues, helping men achieve and maintain an erection. Sildenafil does not automatically cause an erection or increase sexual desire; sexual stimulation is necessary for it to work.
Possible side effects include headache, facial flushing, dizziness, and indigestion. Sildenafil must not be taken with nitrate medications, as the combination can cause a dangerous drop in blood pressure. Consult a healthcare professional before use, and be aware that Kamagra products may not be subject to the same quality controls as approved medicines in some countries.