Tadalafil is chemically the same as Cialis, and also due to the fact that both of them contain an identical active ingredient, they offer similar medical effects. India is a very large producer of Tadalafil, and all the medical products manufactured here are manufactured under strict supervision. The drug manufacturing regulations prescribed here in India are very close to those issued by the World Health Organization.
Eli Lilly, a very reputable manufacturer of Cialis products spends a significant amount of money each year on research, advertising and development. In the United States, the amount one has to spend to gain FDA approval is quite huge. On the other hand, the manufacturers in India do not have to go through the same ordeal, and moreover, they ship their products from those countries where no prescription is required by the law to buy these medications. This is why one can buy good Tadalafil from India at considerably lower prices.