Cialis Coupons and Discounts

The active substance in Cialis, tadalafil, belongs to a group of medicines called “phosphodiesterase type 5 inhibitors (PDE5)”. It works by blocking the phosphodiesterase enzyme, which normally breaks down a substance called cyclic GMP (GMPc). GMPc is produced in the penis during normal sexual stimulation, where it causes relaxation of muscles in the spongy tissues […]

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