Tadasoft 40 mg contains tadalafil, there are generic tadalafil alternatives. However, the important point is that 40 mg is not a standard as-needed dose for erectile dysfunction. Official tadalafil labeling for ED recommends 5–20 mg as needed, while 40 mg once daily is an approved dose for pulmonary arterial hypertension. Generic alternatives may contain the same active ingredient, tadalafil, but the available Tadasoft 40 mg and approved uses vary by product and country. For ED, commonly used tadalafil strengths include 5 mg, 10 mg, and 20 mg. So, rather than replacing Tadasoft 40 mg with another 40 mg product, ask a doctor or pharmacist which tadalafil strength and formulation is appropriate for your condition. Do not split tadalafil tablets unless the product information specifically permits it; U.S. labeling says tadalafil tablets should not be split.