In some cases, people buy phentermine and use it three times a day, which is usually done 30 minutes before a meal. The users of these pills are supposed to follow instructions indicated on the labels on the containers and if there are some parts which they do not understand, they are required to consult their doctors or pharmacists for more information. These Phentermine pills are habit forming and thus why it is important to ensure as a user you take the recommended dosage as described by doctors and pharmacist .these pills are recommended to be taken within duration go 3-6 weeks of which it will depend on body’s response to the pill. When you are taking these phentermine 37.5 pills, they are recommended by doctors not to be crushed or chewed and if you would like to, then the breakings should be mixed with food and not to be taken alone.