If you mean Filitra (vardenafil) and it doesn't produce the expected erection, several things can explain it. Insufficient sexual stimulation: vardenafil doesn't automatically cause an erection; sexual stimulation is necessary. F FDA Access Data Timing: taking it too early or expecting an immediate effect can make it seem ineffective. Heavy meal: a very fatty meal can delay the effect of vardenafil. Alcohol: significant alcohol consumption can reduce erectile performance even if the medicine is working. Underlying causes: diabetes,  Filitra 40 Mg  blood pressure, vascular disease, hormonal problems, anxiety, depression, or relationship/performance anxiety can contribute to ED. Medication interactions: some medicines can alter vardenafil levels, particularly drugs that inhibit CYP3A4. F FDA Access Data Product quality: if Filitra was purchased from an unverified source, the actual dose or ingredients may not be reliable. Important about “Filitra 40 mg” Be careful with this strength. Approved vardenafil tablets are generally available in 2.5, 5, 10, and 20 mg strengths, with 20 mg being the highest standard tablet strength in the FDA labeling. F FDA Access Data A product marketed as Filitra 40 mg should not simply be assumed to be safe or equivalent to an approved 40-mg dose. Also, don't increase the dose or combine it with Zenegra/Manforce/Kamagra (sildenafil) or Tazzle (tadalafil) to try to make it work. Vardenafil must not be used with nitrates because of the risk of a dangerous blood-pressure drop. F FDA Access Data +1 If you tell me your age, whether Filitra is 20 or 40 mg, when you take it relative to food/sex, and whether you've tried sildenafil or tadalafil, I can help identify the most likely reason it isn't working.