Extended-release tablets stay in the body for much longer. Therefore, one can feel its effect for much longer than other tablets. One needs to use the medication according to your prescription. Most probably, your doctor will prescribe you Tramadol 200 mg once a day. However, the maximum dosage should not be more than 300mg/day. Also, these tablets are not advisable for people under 18 years of age. For this, first, you will need to find a good online pharmacy. Now, you can order Tramadol online with a prescription from them. It can be tricky to buy prescription medication from unlicensed sources. The street sellers may provide you with cheaper but these can be fake medications. Therefore, online pharmacies like Rite Aid Pharmacy and the USA pharmacy world can give you genuine medications.