Fildena 120 mg requires a prescription. It is classed as a prescription‑only medicine for erectile dysfunction and should not be bought or used without a doctor’s approval. Why it needs a prescription Fildena 120 mg contains sildenafil citrate, a potent PDE‑5 inhibitor that can significantly affect blood pressure, heart rhythm, and interact with nitrates or other cardiovascular drugs, so medical supervision is important. Many regulators treat sildenafil‑based products (including Fildena) as prescription‑only because of the risk of serious side effects such as prolonged erection, sudden vision or hearing loss, or low blood pressure. Practical takeaway Reputable online and physical pharmacies stress that Fildena 120 mg should be taken only after getting a valid prescription from a licensed healthcare provider. If you have heart disease, low blood pressure, or take nitrates, inform your doctor before starting any sildenafil‑based ED tablet, including Fildena 120 mg.