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What is Benzphetamine?

Benzphetamine is an appetite suppressant that affects the central nervous system. It is used together with diet and exercise to treat obesity. Benzphetamine is a stimulant that has similar makeup to amphetamines.

How Should I Take Benzphetamine?

Take exactly as prescribed by your doctor. Do not take larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label. Benzphetamine is usually taken once each day, mid-morning or mid-afternoon.
Talk with your doctor if you experience increased hunger or if you think the medication is not working properly. Taking more of this medication will not make it more effective and can cause serious life-threatening side effects. Benzphetamine should be taken only for a short time, such as a few weeks. Tell your doctor if you have not lost any weight after 4 weeks of treatment.

Benzphetamine is habit-forming and should be used only by the person it was prescribed for. Never share benzphetamine with another person, especially someone with a history of drug abuse or addiction. Keep track of the amount of medicine used from each new bottle.

What Happens if I Miss A Dose?

Take the missed dose as soon as your remember. Skip the missed dose if it is almost time for your next schedule dose. Do not take extra medicine to make up for the missed dose.

What are the Possible Side Effects of Benzphetamine?

Side effects may include:

  • Feeling restless or hyperactive
  • Headache, dizziness, tremors
  • Sleep problems (insomnia)
  • Increased sweating
  • Dry mouth or an unpleasant taste in your mouth
  • Nausea, diarrhea, upset stomach
  • Skin rash


What Should I Avoid While Taking Benzphetamine?

Drinking alcohol can increase certain side effects of benzphetamine.
To prevent sleep problems, avoid taking this medication late in the afternoon.
Benzphetamine may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.

What Other Drugs Will Affect Benzphetamine?
Tell your doctor about all other medicines you use, especially:

  • Ammonium chloride, ascorbic acid (Vitamin C), K-Phos
  • Blood pressure medications
  • Insulin or oral diabetes medication
  • Sodium bicarbonate, potassium citrate (K-Lyte, Urocite-K), sodium citrate and citric acid (Bicitra, Oracit), or sodium citrate and potassium (Citrolith, Polycitra)
  • A stimulant or ADHD medication such as amphetamine salt combination (Adderall), dextroamphetamine (Dexedrine), or methylphenidate (Ritalin)
  • An antidepressant such as amitriptyline (Elavil, Vanatrip), doxepin (Sinequan), desipramine (Norpramin), imipramine (Janimine, Tofranil), nortriptyline (Pamelor), and others

This medication is approved for children 12 years and older. Do not give this medication to a child younger than 12 years old.

DISCLAIMER *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. This list is not complete and other drugs may interact with Benzphetamine. Tell your doctor about all medications you use, including prescription, over-the-counter, vitamins, and herbal products. Do not start taking a new medication without telling your doctor.