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
- Headache (14%)
- Stomach pain (11%)
- Nausea (8%)
- Diarrhea (8%)
- Passing gas (6%)
- Indigestion (4%)
- Dizziness (4%)
Less Common Side Effects
- Low red blood cell count
- Greater appetite
- Tendon swelling
- Migraines
- Rectal bleeding
- Weakness
- Joint problems
Zelnorm serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Heart attack: chest pain, shortness of breath, arm or shoulder pain, lightheadedness, pain or discomfort in the jaw, neck, or back
- Stroke: sudden numbness, weakness or confusion, vision loss, trouble talking, speaking, or walking
- Suicidal thoughts and behavior
- Severe diarrhea
- Intestinal swelling and injury (ischemic colitis): new or worsening stomach pain, rectal bleeding, bloody diarrhea
Source: DailyMed
The following Zelnorm 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:
Less common
Bleeding from the rectum
bloody stools
dizziness or lightheadedness
feeling of constant movement of self or surroundings
headache, severe and throbbing
pale skin
sensation of spinning
troubled breathing with exertion
unusual bleeding or bruising
unusual tiredness or weakness
Rare
Chest pain or discomfort
confusion
difficulty in speaking
double vision
headache
inability to move the arms, legs, or facial muscles
inability to speak
pain or discomfort in the arms, jaw, back, or neck
slow speech
sweating
thoughts or attempts at killing oneself
vomiting
Incidence not known
Blurred vision
confusion
dark urine
difficulty swallowing
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
fast heartbeat
indigestion
light-colored stools
new or worsening stomach pain
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
severe diarrhea
severe nausea or vomiting
stomach pain, usually after eating a meal
stomach tenderness
sweating
tightness in the chest
upper right abdominal pain
yellow eyes and skin
Get emergency help immediately if any of the following symptoms of overdose occur:
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:
Less common
Belching
difficulty in moving
increased appetite
indigestion
lack or loss of strength
muscle pain or stiffness
pain, swelling, or redness in the joints
stomach discomfort or upset
Incidence not known
Thinning or loss of hair
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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