Tadalista Professional is a chewable form of Tadalafil (20 mg), used to treat erectile dysfunction (ED). Like other Tadalafil medications, it works by increasing blood flow to the ***** by inhibiting the enzyme PDE5. The chewable form allows for faster absorption compared to traditional tablets. However, as with all ED medications, Tadalista Professional should be used carefully in combination with certain medications due to the risk of serious drug interactions. Here are the main categories of drugs that Tadalista Professional should not be combined with or used with caution: 1. Nitrate Medications (for Chest Pain or Heart Conditions) Examples: Nitroglycerin, isosorbide dinitrate, isosorbide mononitrate, and other nitrate medications. Why avoid combination: Both Tadalista Professional (Tadalafil) and nitrates cause blood vessels to dilate, leading to a significant drop in blood pressure. When used together, this combination can cause a dangerous decrease in blood pressure, leading to dizziness, fainting, heart attack, or stroke. Recommendation: Do not take Tadalista Professional with any nitrate medications under any circumstances.