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  • Generic Name: (benzphetamine hydrochloride)
    Other Brands: N/A
  • Last Revised: 02/2016
    • What is this medication and its most common uses?

      Regimex is a medicine used for short-term (a few weeks) treatment for obesity, in addition to diet and exercise.

      Regimex is a federally controlled substance because it has abuse potential.

    • What should I know when beginning and continuing on this medication?

      How does this medication work?

      Regimex is thought to work by suppressing your appetite.

      What are the beneficial effects of this medication and when should I begin to have results?

      What: When used as an add-on to diet and exercise, Regimex may help you lose more weight than dieting alone.

      When: Everyone responds differently to treatment, so try to be patient and follow your healthcare provider's directions. It is important that you take Regimex exactly as your healthcare provider has prescribed.

      How do I know it is working?

      You may start to notice a decrease in your weight. This is a good indicator that your medication is working. Your healthcare provider may ask you questions from time to time to assess how well your medicine is working.

    • What are the possible side effects of this medication?

      The following is not a full list of side effects. Side effects cannot be anticipated. If any develop or change in intensity, tell your healthcare provider as soon as possible. Only your healthcare provider can determine if it is safe for you to continue taking this medication.

      More common side effects may include: increased blood pressure, nausea, diarrhea, hives, restlessness, changes in your sex drive.

      Less common side effects may include:

      Pulmonary hypertension (high blood pressure in the arteries of the lungs), with symptoms such as shortness of breath, unexplained chest pain, fainting, or swelling of your legs and feet.

    • Who should not take this medication?

      Do not take Regimex if you are allergic to it, any of its ingredients, or to similar medicines (such as amphetamine).

      Do not take Regimex if you have heart problems, arteriosclerosis (hardening of the arteries), or moderate to severe high blood pressure.

      Do not take Regimex if you are very anxious, tense, or agitated.

      Do not take Regimex if you have a history of drug abuse.

      Do not take Regimex if you have an overactive thyroid gland or glaucoma (high pressure in the eye).

      Do not take Regimex if you are or may become pregnant.

      Do not take Regimex if you take another medicine called a monoamine oxidase inhibitor (MAOI) (such as phenelzine, selegiline, or linezolid), a class of medications used to treat depression and other conditions. Do not start taking Regimex if you stopped taking an MAOI in the last 2 weeks.

      Do not take Regimex with other medicines that stimulate the central nervous system (the brain and spinal cord).

    • What should I tell my healthcare provider before I take the first dose of this medication?

      Tell your healthcare provider about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Regimex. Also, talk to your healthcare provider about your complete medical history, especially if you have heart problems or high blood pressure, have taken any other medicine for weight loss within the past year, or if you are pregnant, plan to become pregnant, or are breastfeeding.

    • What is the usual dosage?

      The information below is based on the dosage guidelines your healthcare provider uses. Depending on your condition and medical history, your healthcare provider may prescribe a different regimen. Do not change the dosage or stop taking your medication without your healthcare provider's approval.

      Adults and children ≥12 years: The usual starting dose is 25 to 50 milligrams once a day, in the mid-morning or mid-afternoon. Your healthcare provider may adjust your dose as needed, until the desired effect is achieved.

    • How should I take this medication?

      Take Regimex exactly as prescribed by your healthcare provider. Do not change your dose or stop taking Regimex without first talking to your healthcare provider.

    • What should I avoid while taking this medication?

      Do not drive a car, operate heavy machinery, or engage in other dangerous activities until you know how Regimex affects you.

      Do not become pregnant while you are taking Regimex.

    • What are the possible food and drug interactions associated with this medication?

      If Regimex is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your healthcare provider before combining Regimex with the following: blood pressure medicines; certain antidepressants (such as amitriptyline or nortriptyline); certain medicines that change the acidity of your urine; diabetes medicines (such as insulin); MAOIs; medicines that stimulate the central nervous system (the brain and spinal cord); or other weight loss medicines (including over-the-counter preparations and herbal products).

    • May I receive this medication if I am pregnant or breastfeeding?

      Regimex may harm your unborn baby if you take it during pregnancy, and can be found in your breast milk if you take it while breastfeeding. Do not become pregnant or breastfeed while you are taking Regimex. Tell your healthcare provider immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

    • What should I do if I miss a dose of this medication?

      If you miss a dose of Regimex, take it as soon as you remember. However, if it is almost time for your next dose, skip the one you missed and return to your regular dosing schedule. Do not take two doses at once.

    • How should I store this medication?

      Store at room temperature.

    • Who should I contact in case of emergency or overdose?
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      In the event of a medical emergency call your doctor or 9-1-1 immediately. In the event of overdose, call your doctor or poison control for further instructions.
      National Poison Control#: Call 1-800-222-1222

      This PDR+ drug information has been developed by the Physicians’ Desk Reference Network (PDRN), a source of medication information trusted by doctors for over 65 years.

      This monograph summarizes the most important information about your medication and does not cover all the information you may need. If you have any questions or concerns or want to learn more about your medication, ask your healthcare provider; he/she will be able to provide answers to your questions. This medication should only be used by the patient for whom it was prescribed and should not be shared with other people.
    • Additional patient resources.
      back to top Use your PDR® Pharmacy Discount Card when you or a family member fills a prescription and ask for your PDR® Discount every
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