Avoid using Tadasoft 20 mg with nitrates (often prescribed for chest pain) or guanylate cyclase stimulators, as this can cause a significant drop in blood pressure. Be cautious when using it with other medications for erectile dysfunction or certain medications like alpha-blockers.Alcohol and Grapefruit Juice: Limit or avoid alcohol consumption and grapefruit juice, as they can interfere with the effectiveness of the medication. https://www.genericday.com/tadasoft-20-mg.html