Mecasermin Side Effects

Not all side effects for mecasermin may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

For the Consumer

Applies to mecasermin: subcutaneous solution

In addition to its needed effects, some unwanted effects may be caused by mecasermin. In the event that any of these side effects do occur, they may require medical attention.

You should check with your doctor immediately if any of these side effects occur when taking mecasermin:

More common
  • Anxiety
  • bluish skin color of the fingertips
  • blurred vision
  • breathlessness
  • chest pain
  • chills
  • cold sweats
  • coma
  • confusion
  • cool, pale skin
  • depression
  • dizziness
  • fast heartbeat
  • headache
  • increased hunger
  • loss of hearing
  • nausea
  • nervousness
  • nightmares
  • rapid growth of normal cells of the thymus (no symptoms)
  • seizures
  • shakiness
  • slurred speech
  • thickening of the skin
  • unusual tiredness or weakness
Incidence not known
  • Change in the ability to see colors, especially blue or yellow
  • cough
  • difficult or labored breathing
  • difficulty with swallowing
  • hives or welts
  • itching
  • itching or hives at the injection site
  • large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  • limp
  • pain in the hip or knee
  • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  • redness of the skin
  • shortness of breath
  • skin rash
  • tightness in the chest
  • vomiting
  • wheezing

If any of the following symptoms of overdose occur while taking mecasermin, get emergency help immediately:

Symptoms of overdose
  • Anxiety
  • arm or leg pain
  • backache
  • changes in vision
  • excessive sweating
  • extreme weakness
  • frequent urination
  • increase in hands and feet size
  • increased thirst
  • increased volume of pale, diluted urine
  • joint pain
  • stop in menstruation

Some of the side effects that can occur with mecasermin may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

More common
  • Abnormal response of the tympanic membrane to air pressure
  • difficulty with moving
  • difficulty with swallowing
  • ear pain
  • earache
  • large, flat, blue or purplish patches in the skin
  • muffled hearing
  • muscle pain or stiffness
  • redness or swelling in the ear
  • sense of fullness in the ear
  • snoring
  • sore throat
  • voice changing

For Healthcare Professionals

Applies to mecasermin: subcutaneous solution


Local side effects have included lipohypertrophy and bruising.[Ref]


Cardiovascular side effects have included cardiac murmur.[Ref]


Gastrointestinal side effects have included vomiting.[Ref]


Hematologic side effects have included thymus hypertrophy.[Ref]


Musculoskeletal side effects have included arthralgia and pain in extremities. Slipped capital femoral epiphysis and progression of scoliosis has been reported.[Ref]


Respiratory side effects have included snoring and tonsillar hypertrophy.[Ref]


Metabolic side effects have included hypoglycemia.[Ref]


Other side effects have included otitis media, serous otitis media, hypoacusis, fluid in middle ear, ear pain and abnormal tympanometry.[Ref]

Nervous system

Nervous system side effects have included headache, dizziness, and convulsions. Intracranial hypertension has been reported.[Ref]


Hypersensitivity side effects have included anaphylaxis, generalized urticaria, angioedema, and dyspnea.


Dermatologic side effects have included postmarketing reports of alopecia and abnormal hair texture.


1. "Product Information. Increlex (mecasermin)." Tercica Inc, Brisbane, CA.

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