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Fildena is a brand of medication that contains sildenafil citrate, a phosphodiesterase type 5 (PDE5) inhibitor. It’s primarily used to treat erectile dysfunction (ED). Sildenafil in Fildena works by inhibiting the enzyme PDE5. This enzyme breaks down cyclic guanosine monophosphate (cGMP), a molecule that helps relax smooth muscle and increase blood flow to the penis. Fildena typically starts to work within 30 to 60 minutes after ingestion. By blocking PDE5, sildenafil allows cGMP to accumulate, which results in enhanced blood flow to the penile tissues and helps achieve and maintain an erection during sexual stimulation.
