Note: This document contains side effect information about calcium carbonate / famotidine / magnesium hydroxide. Some dosage forms listed on this page may not apply to the brand name Dual Action Complete.
Applies to calcium carbonate / famotidine / magnesium hydroxide: oral tablet chewable.
Serious side effects
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Dizziness or passing out.
- A fast heartbeat.
- A heartbeat that does not feel normal.
- Muscle weakness.
Other side effects
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
- Headache.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.
For Healthcare Professionals
Applies to calcium carbonate/famotidine/magnesium hydroxide: oral tablet chewable.
Gastrointestinal
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]
