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Generic Name: cromolyn sodium (oral) (KRO moe lin SOE dee um)
Brand Name: Gastrocrom
Physician reviewed Gastrocrom (oral) patient information - includes Gastrocrom description, dosage and directions.
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Drug Information:
Gastrocrom works by preventing the release of substances in the body that cause inflammation. Gastrocrom is used to treat the symptoms of a condition called mastocytosis, which can cause diarrhea, nausea, vomiting, headaches, stomach pain, itchy skin, and flushing (warmth or redness under the skin). Gastrocrom may also be used for purposes not listed in this medication guide. Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use. Learn more

Gastrocrom Side Effects

Gastrocrom Side Effects

Note: This document contains side effect information about cromolyn. Some of the dosage forms listed on this page may not apply to the brand name Gastrocrom.

For the Consumer

Applies to cromolyn: inhalation solution

Other dosage forms:

  • oral solution

Along with its needed effects, cromolyn (the active ingredient contained in Gastrocrom) 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 as soon as possible if any of the following side effects occur while taking cromolyn:


  • Difficulty in swallowing
  • hives
  • increased wheezing or difficulty in breathing
  • itching of skin
  • low blood pressure
  • shortness of breath
  • swelling of face, lips, or eyelids
  • tightness in chest

Some side effects of cromolyn 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

  • Coughing
  • nausea
  • throat irritation or dryness

If you are using the cromolyn inhalation aerosol, you may notice an unpleasant taste. This may be expected and will go away when you stop using the medicine.

For Healthcare Professionals

Applies to cromolyn: compounding powder, inhalation aerosol with adapter, inhalation solution, nasal spray, oral capsule, oral solution


Adverse reactions following use of this drug are rare; headache and diarrhea have been reported following oral use, while cough, nasal congestion, sneezing and wheezing have been reported with oral inhalation.


Postmarketing reports: Anaphylaxis, laryngeal edema


Frequency not reported: Pharyngitis, dyspnea, cough, nasal congestion, sneezing, wheezing, nasal itching, nose bleed, nose burning

Postmarketing reports: Bronchospasm, pulmonary infiltrates with eosinophilia, hoarseness


Frequency not reported: Polycythemia, neutropenia, pancytopenia

Postmarketing reports: Anemia


Postmarketing reports: Dysuria, urinary frequency


Rare (less than 0.1%): Pruritus, rash

Frequency not reported: Urticaria/angioedema, erythema/burning, photosensitivity, purpura

Postmarketing reports: Photodermatitis, exfoliative dermatitis


Rare (0.01% to 0.1%): Abdominal pain, nausea,

Frequency not reported: Diarrhea, constipation, dyspepsia, flatulence, glossitis, stomatitis, vomiting, dysphagia, oesophagospasm, unpleasant taste, stomachache, mild throat irritation

Postmarketing reports: Swollen parotid gland


Frequency not reported: Abnormal hepatic function test


Frequency not reported: Flushing, tachycardia, premature ventricular contractions, palpitations, chest pain

Postmarketing reports: Periarteritic vasculitis, pericarditis


Rare (less than 0.1%): Myalgia

Frequency not reported: Arthralgia, stiffness/weakness of legs, lupus erythematosus syndrome

Postmarketing reports: Joint swelling and pain, polymyositis

Nervous system

Rare (0.01% to 0.1%): Headache

Frequency not reported: Dizziness, hypoesthesia, paresthesia, migraine, convulsions

Postmarketing reports: Peripheral neuritis


Frequency not reported: Psychosis, anxiety, depression, hallucinations, behavior change, insomnia, nervousness


Frequency not reported: Fatigue, malaise, tinnitus

Postmarketing reports: Vertigo


Postmarketing reports: Lacrimation

Editorial References and Review

Medically reviewed by BestRx Medical Team Last updated on 1/1/2020.

Source: Drugs.com Gastrocrom