Gold Member Badge


  • You're all caught up!

The Ingredients in Adipex Diet Pills

author image Cindy Han
Cindy Han has been writing since 1997. Her work includes articles in "Proceedings of National Academy of Sciences" and "Behavioral Neuroscience" and a book chapter in "Attention." Han received the Eurocenter Scholarship from UK and Science for Humanities fellowship from Spain. She holds a Ph.D. in biopsychology from State University of New York-Stony Brook and is a California Institute of Technology-trained neuroscientist.
The Ingredients in Adipex Diet Pills
A variety of pills next to a measuring tape. Photo Credit: a3701027/iStock/Getty Images

Adipex is a medication that stimulates a brain region called the hypothalamus and causes a series of “fight-or-flight” physiological responses, similar to those created by adrenaline, which is released while your body is under stress or excitement. By artificially creating a false fight-or-flight response, appetite is reduced, and energy is used for increasing heart rate and blood pressure, according to

Video of the Day

Phentermine Hydrochloride

The generic name of the active ingredient in Adipex is phentermine hydrochloride. The chemical name for phentermine hydrochloride is α,α,-Dimethylphenethylamine hydrochloride. Phentermine hydrochloride is a white and odorless powder, according to Phentermine hydrochloride belongs to the amphetamine class of drugs, and its actions include central nervous system stimulation. Increased heart rate and blood pressure have been seen with all drugs of this class. When used for weight loss, these drugs are also called “anorectics,” because they suppress appetite. Because phentermine hydrochloride affects the central nervous system, unpleasant neural consequences have been observed, including dizziness, headache, blurred vision, confusion and sleeplessness.

Dr. Donald Hensrud from cautions that because the clinical trials of phentermine were short and indicated a slight potential for abuse, phentermine was only approved by the Food and Drug Administration for short-term obesity treatment, defined by 12 weeks or less. Therefore, phentermine hydrochloride should not be used long-term. Also, discontinuation of treatment may result in regaining the weight previously lost.

Inactive Ingredients in Capsules

In the capsule form of Adipex, the following inactive ingredients are also found: corn starch, gelatin, lactose monohydrate, magnesium stearate, titanium dioxide, black iron oxide and food colorings. Although meant to be inactive, these ingredients may trigger allergies in some rare cases.

Inactive Ingredients in Tablets

In the tablet form of Adipex, sugar is added to enhance the flavor. Other inactive ingredients include corn starch, lactose, magnesium stearate, microcrystalline cellulose, pregelatinized starch and food colorings.


Taking Adipex together with other diet medications may cause serious consequences such as pulmonary hypertension. If not treated, pulmonary hypertension can be fatal. Also, Adipex may be addictive to some people, particularly those with drug abuse history. It should not be shared with anyone other than the prescription holder. If allergies occur with signs and symptoms such as rash, difficulty breathing or swelling, medical attention should be sought immediately.

LiveStrong Calorie Tracker
Lose Weight. Feel Great! Change your life with MyPlate by LIVESTRONG.COM
  • Gain 2 pounds per week
  • Gain 1.5 pounds per week
  • Gain 1 pound per week
  • Gain 0.5 pound per week
  • Maintain my current weight
  • Lose 0.5 pound per week
  • Lose 1 pound per week
  • Lose 1.5 pounds per week
  • Lose 2 pounds per week
  • Female
  • Male
ft. in.


Demand Media