Kamagra Effervescent is a medication used to treat erectile dysfunction (ED) in men. It contains the active ingredient sildenafil citrate, which belongs to a class of medications called phosphodiesterase type 5 (PDE5) inhibitors. Kamagra Effervescent comes in the form of effervescent tablets that dissolve in water. This makes it convenient for those who have difficulty swallowing pills or prefer a different form of medication. Sildenafil citrate works by increasing blood flow to the penis during sexual stimulation. It inhibits the enzyme phosphodiesterase type 5 (PDE5), which normally breaks down cyclic guanosine monophosphate (cGMP), a substance that relaxes smooth muscles in the penis and allows blood to flow into the penile tissues, resulting in an erection.