Didrex Side Effects

Generic Name: benzphetamine

Please note - some side effects for Didrex may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Side Effects of Didrex - for the Consumer

Didrex

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Didrex:

Changes in sex drive; diarrhea; dizziness; dry mouth; headache; nausea; restlessness; sleeplessness; tremor; unpleasant taste.

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision; chest pain; fainting; fast or irregular heartbeat; mental or mood changes; new or unusual shortness of breath; pounding in the chest; severe excitability; severe or persistent dizziness or headache; swelling of the feet or legs.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.

Didrex Side Effects - for the Professional

Didrex

The following have been associated with the use of benzphetamine hydrochloride:

Cardiovascular

Palpitation, tachycardia, elevation of blood pressure.

There have been isolated reports of cardiomyopathy and ischemic cardiac events associated with chronic amphetamine use.

Valvular heart disease associated with the use of some anorectic agents such as fenfluramine and dexfenfluramine, both independently and especially when used in combination with other anorectic drugs, have been reported. However, no cases of this valvulopathy have been reported when Didrex Tablets have been used alone.

CNS

Overstimulation, restlessness, dizziness, insomnia, tremor, sweating, headache; rarely, psychotic episodes at recommended doses; depression following withdrawal of the drug.

Gastrointestinal

Dryness of the mouth, unpleasant taste, nausea, diarrhea, other gastrointestinal disturbances.

Allergic

Urticaria and other allergic reactions involving the skin.

Endocrine

Changes in libido.

Side Effects by Body System - for Healthcare Professionals

Cardiovascular

Cardiovascular side effects have included palpitation, tachycardia, and elevation of blood pressure. Isolated cases of cardiomyopathy and ischemic cardiac events have been reported in association with chronic amphetamine use. Valvular heart disease associated with the use of some anorectic agents such as fenfluramine and dexfenfluramine (both independently and especially when used in combination with other anorectic drugs) has been reported; however, no cases of this valvulopathy have been reported when benzphetamine has been used alone.

Nervous system

Nervous system side effects have included restlessness, overstimulation, insomnia, dizziness, tremor, sweating, and headache.

Psychiatric

Psychiatric side effects have included depression following withdrawal of the drug and, rare instances of psychotic episodes.

Gastrointestinal

Gastrointestinal side effects have included nausea, diarrhea, unpleasant taste, dry mouth, and other gastrointestinal disturbances.

Genitourinary

Genitourinary side effects have included changes in libido.

Hypersensitivity

Hypersensitivity side effects have included urticaria and other allergic reactions involving the skin.

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