What is Phentermine?
Oral Phentermine Hydrochloride (HCL) is sold for weight loss. It is in the Sympathomimetic family of appetite suppressants (used for the short-term management of exogenous obesity.) When used in conjunction with diet, exercise, and behavior therapy, Phentermine may help you to lose weight while you are learning new ways to eat and to exercise.
Three forms of Phentermine are available:
How does Phentermine work?
Phentermine works by stimulating the hypothalamus gland and affecting certain neurotransmitters to decrease appetite. The hypothalamus is the region of the brain that controls the autonomic nervous system, regulating sleep cycles, body temperature, appetite, etc.
Proper Use of Phentermine
Phentermine should be taken on an empty stomach, once daily, prior to breakfast. If in tablet form, the tablet may be broken or cut in half. Do NOT break, crush, or chew tablets.
As Phentermine may disrupt normal sleep patterns, avoid taking a dose late in the day. If taking more than one dose a day, take the last dose approx. 4-6 hours prior to going to bed.
The following information is specific only to the average doses of Phentermine. The recommended dose of Phentermine may be different for different patients. If your dose is different, do NOT change it unless your doctor tells you to do so.
Adults under Age 60
Oral dosage form (Capsules) – 15 to 37.5 mg once/day before breakfast or 1-2 hours after breakfast.
Oral dosage form (Tablets) – 15 to 37.5 mg once/day before breakfast or 1-2 hours after breakfast. Instead of taking it once a day, your doctor may tell you to take 15 to 37.5 mg in divided doses one-half hour before meals.
Oral resin dosage form (Capsules) – 15 to 30 mg once/day before breakfast.
Adults Age 60 and Over
A reduced dosage may be necessary. Consult your physician.
Infants and Children
Phentermine is NOT recommended for children under age 16.
Maximum Dosage Recommendations
Take Phentermine ONLY as directed by your doctor.
Do NOT take more of it
Do NOT take it more often, and
Do NOT take it for a longer time than your doctor ordered.
If too much Phentermine is taken, it may cause unwanted effects or become habit-forming.
Please speak with your doctor if you think that Phentermine is not working properly after you have taken it for a few weeks. DO NOT increase the dose.