Teprotumumab Side Effects

Medically reviewed by Philip Thornton, DipPharm. Last updated on Sep 18, 2023.

Applies to teprotumumab: intravenous powder for solution.

Serious side effects of teprotumumab

Along with its needed effects, teprotumumab 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 or nurse immediately if any of the following side effects occur while taking teprotumumab:

More common side effects

• blurred vision
• dry mouth
• flushed, dry skin
• fruit-like breath odor
• increased hunger
• increased thirst
• increased urination
• nausea
• stomach pain
• sweating
• trouble breathing
• unexplained weight loss
• unusual tiredness or weakness
• vomiting

Less common side effects

• fast, pounding, or irregular heartbeat or pulse
• feeling hot
• headache
• muscle pain

Incidence not known

• bleeding from the rectum
• diarrhea that may contain blood
• severe stomach pain

Other side effects of teprotumumab

Some side effects of teprotumumab 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 side effects

• change or loss of hearing
• change or loss of taste
• dry skin
• hair loss or thinning of the hair
• mild diarrhea
• muscle spasms
• unusual tiredness or weakness

Incidence not known

• bleeding, blistering, burning, coldness, discoloration of the skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site

For healthcare professionals

Applies to teprotumumab: intravenous powder for injection.

Musculoskeletal adverse events

• Very common (10% or more): Muscle spasms (25%)^[Ref]

Gastrointestinal

• Very common (10% or more): Nausea (17%), diarrhea (12%)
• Common (1% to 10%): Dysgeusia
• Frequency not reported: Exacerbation of inflammatory bowel disease^[Ref]

Metabolic

• Very common (10% or more): Hyperglycemia (10%)^[Ref]

Nervous system

• Common (1% to 10%): Headache^[Ref]

Dermatologic

• Very common (10% or more): Alopecia (13%)
• Common (1% to 10%): Dry skin^[Ref]

Other

• Very common (10% or more): Fatigue (12%), hearing impairment (10%)
• Common (1% to 10%): Infusion reactions (transient blood pressure increases, feeling hot, tachycardia, dyspnea, headache, and muscle pain)^[Ref]

Further information

Teprotumumab side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer