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Chemet Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

Last reviewed on RxList 1/7/2016

Chemet (succimer) is a chelating (binding) agent that binds to lead in the blood and allows it to be passed out in the urine used in the treatment of lead poisoning. Common side effects of Chemet include nausea, vomiting, loss of appetite, diarrhea, metallic taste in the mouth, drowsiness, dizziness, watering eyes, or headache.

The initial dosage of Chemet is 10 mg/kg or 350 mg/m2 every eight hours for five days, then 10 mg/kg or 350 mg/m2 every 12 hours for an additional two weeks. Treatment course lasts 19 days and may be repeated if indicated by blood lead concentration. No other medications are known to interact with Chemet. Tell to your doctor all prescription or over-the-counter medications or supplements you use. During pregnancy, Chemet should be used only when prescribed. It is unknown if this medication passes into breast milk. Since this medication is used for lead poisoning and lead may pass into breast milk, do not breast-feed while using this drug.

Our Chemet (succimer) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is Patient Information in Detail?

Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.

Chemet in Detail - Patient Information: Side Effects

Seek emergency medical attention or contact your doctor immediately if you experience any of the following rare but serious side effects to succimer:

  • an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);
  • skin rash or sores in the mouth; or
  • signs of infection such as fever, sore throat, or coughing.

Other, less serious side effects may be more likely to occur. Continue to take succimer and talk to your doctor if you experience

  • nausea, vomiting, or decreased appetite;
  • diarrhea;
  • metallic taste in the mouth;
  • drowsiness;
  • dizziness;
  • watering eyes; or
  • headache.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Chemet (Succimer)

What is Patient Information Overview?

A concise overview of the drug for the patient or caregiver from First DataBank.

Chemet Overview - Patient Information: Side Effects

SIDE EFFECTS: Nausea, vomiting, loss of appetite, or diarrhea may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these unlikely but serious side effects occur: signs of infection (such as fever, persistent sore throat).

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Read the entire patient information overview for Chemet (Succimer)

What is Prescribing information?

The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.

Chemet FDA Prescribing Information: Side Effects
(Adverse Reactions)


Clinical experience with CHEMET has been limited. Consequently, the full spectrum and incidence of adverse reactions including the possibility of hypersensitivity or idiosyncratic reactions have not been determined. The most common events attributable to succimer, i.e., gastrointestinal symptoms or increases in serum transaminases, have been observed in about 10% of patients (see PRECAUTIONS). Rashes, some necessitating discontinuation of therapy, have been reported in about 4% of patients. If rash occurs, other causes (e.g. measles) should be considered before ascribing the reaction to succimer. Rechallenge with succimer may be considered if lead levels are high enough to warrant retreatment. One allergic mucocutaneous reaction has been reported on repeated administration of the drug (see PRECAUTIONS). Mild to moderate neutropenia has been observed in some patients receiving succimer (see WARNINGS). Table I presents adverse events reported with the administration of succimer for the treatment of lead and other heavy metal intoxication.


  Pediatric Patients (191) Adults (134)
% (n) % (n)
Digestive: 12.0 23 20.9 28
Nausea, vomiting, diarrhea, appetite loss, hemorrhoidal symptoms, loose stools, metallic taste in mouth.
Body as a Whole: 5.2 10 15.7 21
Back pain, abdominal cramps, stomach pains, head pain, rib pain, chills, flank pain, fever, flu-like symptoms, heavy head/tired, head cold, headache, moniliasis.
Metabolic: 4.2 8 10.4 14
Elevated SGPT, SGOT, alkaline phosphatase, elevated serum cholesterol.
Nervous: 1.0 2 12.7 17
Drowsiness, dizziness, sensorimotor neuropathy, sleepiness, paresthesia.
Skin and Appendages: 2.6 5 11.2 15
Papular rash, herpetic rash, rash, mucocutaneous eruptions, pruritus.
Special Senses: 1.0 2 3.7 5
Cloudy film in eye, ears plugged, otitis media, eyes watery.
Respiratory 3.7 7 0.7 1
Throat sore, rhinorrhea, nasal congestion, cough.
Urogenital: 0.0 - 3.7 5
Decreased urination, voiding difficulty, proteinuria increased.
Cardiovascular: 0.0 1.8 2
Heme/Lymphatic: 0.5* 1 1.5* 2
Mild to moderate neutropenia, increased platelet count, intermittent eosinophilia.
Musculoskeletal: 0.0 3.0 4
Kneecap pain, leg pains.
*Does not include neutropenia - see WARNINGS.

To report SUSPECTED ADVERSE REACTIONS, contact Recordati Rare Diseases Inc. at 1-888-755-8344 or FDA at 1-800-FDA-1088 or

Read the entire FDA prescribing information for Chemet (Succimer)

Chemet - User Reviews

Chemet User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Chemet sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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