Fildena 120 mg contains sildenafil, and sildenafil does not create sexual desire or directly produce an erection by itself. Here’s the physiology: Sexual stimulation—touch, arousal, thoughts, etc.—causes nerves in the penis to release nitric oxide (NO). NO increases cGMP, which relaxes the smooth muscle in the penis and allows more blood to enter. Sildenafil blocks PDE5, the enzyme that breaks down cGMP. This Fildena 120 mg and prolongs the erection response to stimulation. F FDA Access Data +1 Without that initial sexual stimulation and NO release, there isn't enough cGMP for sildenafil to amplify, so sildenafil generally won't cause an erection on its own. F FDA Access Data So taking a larger dose doesn't remove the need for stimulation. In fact, 120 mg is above the usual maximum recommended sildenafil dose of 100 mg for ED, so increasing the dose isn't a good way to compensate for inadequate arousal. If you're finding that Fildena works only weakly even when you're sexually stimulated, I can explain the common reasons (timing, food, alcohol, anxiety, dose, etc.).