Phendimetrazine Side Effects
What should I watch for?
Notify your physician immediately if you become short of breath while doing your normal activities.
Do not take this medicine within 6 hours of bedtime. It can keep you from getting to sleep. Avoid drinks that contain caffeine and try to stick to a regular bedtime every night.
This medicine was intended to be used in addition to a healthy diet and exercise. The best results are achieved this way. This medicine is only indicated for short-term use. Eventually your weight loss may level out. At that point, the drug will only help you maintain your new weight. Do not increase or in any way change your dose without consulting your doctor.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may increase dizziness and drowsiness. Avoid alcoholic drinks.
Common and Rare 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
Incidence not known
burning while urinating
chest pain or discomfort
decreased ability to exercise
difficult or painful urination
fast, irregular, pounding, or racing heartbeat or pulse
feeling of warmth
increased need to urinate
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
shakiness in the legs, arms, hands, or feet
shortness of breath
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
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Abdominal or stomach cramps
change in consciousness
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
loss of consciousness
loss of interest or pleasure
physical attempt to injure
pounding in the ears
trouble with concentrating
unusual tiredness or weakness
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:
Incidence not known
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
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.