Cialis vs. Viagra quick comparison
- Cialis (tadalafil) and Viagra (sildenafil) are phosphodiesterase-5 (PDE5) inhibitors used for treating impotence (erectile dysfunction, or ED).
- Adcirca is another brand name of tadalafil
- Buy Viagra
- Buy Cialis
- One difference between the drugs is how long they stay in your system. Cialis provides penile hardness (the ability to obtain an erection) over a longer period than Viagra because it lasts up to 18 hours, while Viagra only lasts for about 4 to 6.
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