If you have ever experienced an allergy or increased sensitivity to this medication or any of its active ingredients, you should not use it.

Organic nitrates

Additionally, if you currently take any other medications that contain organic nitrates, such as isosorbide or nitroglycerin, you should avoid taking this medication.

Riociguat

It is not advised to use Tadacip 20 Tablet if you are taking Riociguat (Adempas, the common trade name).