Sildigra 100 mg belongs to the class of drugs known as phosphodiesterase type 5 (PDE5) inhibitors. The active ingredient in Sildigra 100 mg is sildenafil citrate. PDE5 inhibitors are commonly used to treat erectile dysfunction (ED) in men. Sildenafil citrate, the active ingredient in Sildigra 100 mg, works by inhibiting the action of the enzyme PDE5. This enzyme is responsible for breaking down a substance called cyclic guanosine monophosphate (cGMP), which plays a role in relaxing the smooth muscles of blood vessels in the penis. By inhibiting PDE5, sildenafil helps to maintain higher levels of cGMP, which promotes increased blood flow to the penis during sexual stimulation. This enhanced blood flow can result in improved erectile function, allowing men with ED to achieve and sustain an erection. It's important to note that while Sildigra 100 mg tablets and other PDE5 inhibitors can be effective in treating ED, they should be used under the guidance of a healthcare professional. They can help determine the appropriate dosage, usage instructions, and suitability based on an individual's medical history and health status.