Filagra 100 mg is used to help men with ED issues. The active ingredient is Sildenafil Citrate, which works by blocking the action of PDE5, an enzyme that breaks down the chemical Cyclic Guanosine Monophosphate (cGMP). The main function of cGMP is to relax smooth muscle tissue in the male genital area. When Filagra inhibits PDE5, this increases the blood flow to the genital region, allowing an erection to occur.
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