The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
- Fast heartbeat
- High blood pressure
- Feeling overstimulated
- Restlessness or shakiness
- Dizziness
- Trouble sleeping
- Sweating
Less Common Side Effects
- Headache
- Dry mouth
- Having a bad taste in your mouth
- Nausea
- Diarrhea
- Change in sex drive
Benzphetamine serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Heart valve problems: dizziness, chest pain, leg or ankle swelling, irregular heartbeat, fatigue, trouble breathing
- High blood pressure in the lungs: trouble breathing, chest pain, fainting, swelling in the legs
Source: DailyMed
The following Benzphetamine side effects have also been reported
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:
More common
Agitation
confusion
dizziness
fast, irregular, pounding, or racing heartbeat or pulse
feeling lightheaded or faint
headache
hives, welts, itching, skin rash
irritability
lightheadedness
mood or other mental changes
nervousness
nightmares
numbness or tingling in the arms or legs
redness of the skin
restlessness
seizures
shakiness or trembling in the legs, arms, hands, or feet
sweating
trouble sleeping
trouble thinking, speaking, or walking
unusual feeling of excitement
Rare
Chest discomfort or pain
discouragement
feeling sad or empty
hallucinations
lack of appetite
loss of interest or pleasure
severe mental changes
swelling of the feet or lower legs
trouble breathing
trouble concentrating
unusual tiredness or weakness
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose
Blurred vision
change in consciousness
dark-colored urine
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
loss of consciousness
muscle cramps, spasms, pain, or stiffness
nervousness
physical attempt to injure oneself
pounding in the ears
rapid, shallow breathing
severe anxiety or feeling of panic
stomach cramps
violent actions
vomiting
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:
More common
Decrease in sexual ability, desire, drive, or performance
decreased interest in sexual intercourse
inability to have or keep an erection
increase in sexual ability, desire, drive, or performance
increased interest in sexual intercourse
unpleasant taste
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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