Phentermine is an oral medication that should be used exactly as prescribed by your doctor. Take the recommended dose before or after breakfast. It should not be taken during the day or late at night because it may induce sleep disruption. Only use drugs with the approval of your doctor. Buy Phentermine Online and consult your doctor for the best results. Phentermine is an FDA-approved medication that must be used exactly as directed. As a result, it should only be used under the supervision of a healthcare professional.