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Fildena Chewable 100 mg is a form of sildenafil citrate designed for treating erectile dysfunction (ED). It is similar to other sildenafil formulations but is available as a chewable tablet, which can be convenient for some users. Role in Treating Pulmonary Hypertension Sildenafil citrate is also used in the treatment of pulmonary arterial hypertension (PAH) under different brand names and formulations. However, Fildena Chewable 100 mg is not typically prescribed for PAH; it is mainly used for ED. Here’s a detailed look at its role in treating PAH: Mechanism of Action: Sildenafil Citrate: It works by inhibiting the enzyme phosphodiesterase type 5 (PDE5), which leads to increased levels of cyclic GMP. This results in the relaxation of smooth muscles and dilation of blood vessels, including those in the lungs. PAH Treatment: Brand Name: For PAH, sildenafil is marketed under brand names like Revatio, which is specifically indicated for this condition. Dosage: The dosage for treating PAH is typically different from that used for ED. For PAH, sildenafil is usually administered in lower doses (e.g., 20 mg three times daily) compared to ED doses. Effects on Pulmonary Hypertension: Vasodilation: Sildenafil helps relax and widen the blood vessels in the lungs, which can reduce the high blood pressure in the pulmonary arteries and improve exercise capacity and symptoms. Symptom Relief: By reducing pulmonary arterial pressure, sildenafil can help alleviate symptoms associated with PAH, such as shortness of breath and fatigue. Considerations Not a Standard PAH Treatment: Indication: While sildenafil can be effective in treating PAH, Fildena Chewable 100 mg is not specifically labeled or recommended for PAH treatment.  

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