Raltegravir (Isentress and Isentress HD) is a prescription medication approved by the U.S. FDA for the treatment of adults and children with HIV infection. The raltegravir price in India is less than in other countries, as there is a wide range of brands available. One form of raltegravir (Isentress) is approved to treat adults and children weighing a minimum of 4 lb and 4 oz (2 kg). Another form of raltegravir (Isentress HD), is approved to treat adults and children weighing a minimum of 88 lb (40 kg). Raltegravir is always recommended to be used in combination with certain other HIV medications.