Vidalista 20 functions by stopping phosphodiesterase type 5 from functioning. A crucial chemical messenger for the relaxation of smooth muscle tissue in the penis is cyclic guanosine monophosphate. PDE-5 deconstructs this. This drug comes with a patient information pamphlet. Please carefully read and follow these instructions before beginning to use tadalafil each time you receive a refill for your prescription. Consult your physician with any queries you may have. Never keep prescription medications that are no longer needed or up to date. The medication should be stored at room temperature in a closed container away from heat, moisture, and sunlight. Don't allow kids to access it.