There are many different types of adderall tablets in different shapes and colors. Only in 15-30 minutes, this tablet starts working. It can relieve heart problems, high blood pressure, antihistamines for cold and allergies and so on. It may help improve the nervous system. It is provided by the chemist or you can buy adderall online after the doctor's prescription. These tablets and capsules are available both online and offline in different strengths such as adderall 5 mg, 10, mg, 20 mg, 30 mg XR 5mg, XR 10 mg and many more. Do not take before or without the advice of your personal Doctor. It may cause some serious side effects like trouble breathing, chest pain, aggression, paranoia and so on.