Calcium Carbonate / Famotidine / Magnesium Hydroxide Side Effects

Medically reviewed by Drugs.com. Last updated on Mar 17, 2024.

Applies to calcium carbonate / famotidine / magnesium hydroxide: oral tablet chewable.

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using calcium carbonate, famotidine, and magnesium hydroxide and call your doctor at once if:

• your heartburn gets worse; or

• you still have heartburn after 2 weeks of taking calcium carbonate, famotidine, and magnesium hydroxide.

Less serious side effects may be more likely, and you may have none at all.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

For healthcare professionals

Applies to calcium carbonate / famotidine / magnesium hydroxide: oral tablet chewable.

Gastrointestinal adverse events

• Uncommon (0.1% to 1%): Abdominal discomfort, abdominal pain, diarrhea, dry mouth, flatulence, nausea, vomiting
• Rare (less than 0.1%): Abdominal pain upper, constipation
• Frequency not reported: Abdominal distension, abnormal feces, dyspepsia, eructation^[Ref]

Nervous system

• Uncommon (0.1% to 1%): Dizziness, dysgeusia
• Rare (less than 0.1%): Somnolence
• Frequency not reported: Paresthesia^[Ref]

Other

• Uncommon (0.1% to 1%): Asthenia, fatigue
• Rare (less than 0.1%): Malaise^[Ref]

Respiratory

• Uncommon (0.1% to 1%): Oropharyngeal discomfort, oropharyngeal pain^[Ref]

Dermatologic

• Uncommon (0.1% to 1%): Rash
• Rare (0.01% to 0.1%): Pruritus, urticaria
• Very rare (less than 0.01%): Alopecia^[Ref]

Hypersensitivity

• Rare (less than 0.1%): Anaphylactic reaction, angioedema, hypersensitivity^[Ref]

Hepatic

• Rare (less than 0.1%): Cholestatic jaundice, hepatic enzyme abnormal, liver disorder^[Ref]

Hematologic

• Rare (less than 0.1%): Leukopenia, pancytopenia^[Ref]

Metabolic

• Rare (less than 0.1%): Decreased appetite
• Frequency not reported: Thirst^[Ref]

Musculoskeletal

• Rare (less than 0.1%): Arthralgia^[Ref]

Psychiatric

• Frequency not reported: Nervousness^[Ref]

Endocrine

• Rare (less than 0.1%): Gynecomastia^[Ref]

See also:

Further information

Calcium carbonate/famotidine/magnesium hydroxide 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