Phendimetrazine (Oral Route)

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Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

• Seeing, hearing, or feeling things that are not there
• Severe mental changes

• Anxiety
• Burning while urinating
• Chest pain or discomfort
• Decreased ability to exercise
• Difficult or painful urination
• Dizziness
• Dry mouth
• Fainting
• Fast, irregular, pounding, or racing heartbeat or pulse
• Feeling of warmth
• Headache
• Hyperventilation
• Increased need to urinate
• Irritability
• Nausea
• Numbness or tingling in the arms or legs
• Pain or discomfort in the arms, jaw, back, or neck
• Passing urine more often
• Redness of the face, neck, arms, and occasionally, upper chest
• Restlessness
• Shakiness in the legs, arms, hands, or feet
• Shortness of breath
• Sweating
• Swelling of the feet or lower legs
• Trembling or shaking of the hands or feet
• Trouble with breathing
• Trouble with sleeping
• Trouble with thinking, speaking, or walking
• Vomiting
• Weakness

Get emergency help immediately if any of the following symptoms of overdose occur:

• Abdominal or stomach cramps
• Blurred vision
• Change in consciousness
• Convulsions
• Diarrhea
• Discouragement
• Dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
• Fast, slow, or irregular heartbeat
• Feeling sad or empty
• Lack of appetite
• Lightheadedness
• Loss of consciousness
• Loss of interest or pleasure
• Overactive reflexes
• Panic
• Physical attempt to injure
• Pounding in the ears
• Rapid breathing
• Sweating
• Tiredness
• Trouble with concentrating
• Unusual tiredness or weakness
• Violent actions

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

• Decreased interest in sexual intercourse
• Difficulty having a bowel movement (stool)
• Inability to have or keep an erection
• Increased in sexual ability, desire, drive, or performance
• Increased interest in sexual intercourse
• Loss in sexual ability, desire, drive, or performance
• Sleeplessness
• Stomach pain
• Unable to sleep

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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