The quality of generic drugs doesn’t differ from its brand name counterparts, even if they differ in shape and color. Generic drugs have identical active ingredients, the quantity and speed of absorption of its active ingredients into the bloodstream.The difference between Soft tabs and Regular pills refer to the way that the medication is taken and how it enters your body. Please, check the table below: Drug Name Dosage Time before it starts to act How to take Fatty food/alcohol Effect lasts Viagra 50mg, 100mg 1 hour take with a glass of water no 3-4 hours Viagra Soft 50mg, 100mg 15 - 20 minutes put under the tongue till it dissolves yes 6 hours Viagra Professional 100mg 30 min tke with a glass of water no 4 hours Viagra Super Active 100mg 10 min take with a glass of water no 9 hours Cialis 20mg 30 minutes take with a glass of water no 36 hours Cialis Soft 20mg 15 - 20 minutes put under the tongue till it dissolves yes 24 - 36 hours Cialis Super Active 20mg 5 - 7 min take with a glass of water yes 50 - 55 hours Levitra 20mg 10 minutes - 1 hour take with a glass of water no 12 hours.For example, detail about Tadalafil Tadalafil free rxTadacip belongs to the class of drugs known as phosphodiesterase-5 (PDE-5). When sexual stimulation occurs, Tadacip enables a man's penis to fill with enough blood to cause an erection. In men with erectile dysfunction a blood flow to the penis is not enough to produce erection. The main component of Tadacip is Tadalafil, it relaxes smooth muscles, widens blood vessels in the penis and this allows blood to fill cavernous bodies and result in erection. After sexual act erection disappears as in normal circumstances. Erection cannot be achieved by just taking Tadacip, it requires sexual stimulation. Active substance of the medication is Tadalafil. .