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Acid Reducer Original Strength Side Effects

Generic Name: famotidine

Note: This page contains information about the side effects of famotidine. Some of the dosage forms included on this document may not apply to the brand name Acid Reducer Original Strength.

For the Consumer

Applies to famotidine: oral powder for suspension, oral tablet, oral tablet chewable, oral tablet disintegrating

In addition to its needed effects, some unwanted effects may be caused by famotidine (the active ingredient contained in Acid Reducer Original Strength). In the event that any of these side effects do occur, they may require medical attention.

Major Side Effects

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

Rare
  • Bleeding gums
  • blistering, peeling, or loosening of the skin
  • blood in the urine or stools
  • bloody, black, or tarry stools
  • chest pain
  • chills
  • cough or hoarseness
  • diarrhea
  • fever
  • fever with or without chills
  • general feeling of tiredness or weakness
  • high fever
  • itching
  • joint or muscle pain
  • lower back or side pain
  • painful or difficult urination
  • pale skin
  • pinpoint red spots on the skin
  • red, irritated eyes
  • red skin lesions, often with a purple center
  • shortness of breath
  • sore throat
  • sores, ulcers, or white spots on the lips or in the mouth
  • swollen glands
  • unusual bleeding or bruising
  • unusual tiredness or weakness
Incidence not known:
  • Abdominal or stomach pain
  • anxiety
  • burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
  • clay-colored stools
  • dark urine
  • depression
  • difficulty with breathing
  • difficulty with swallowing
  • dizziness
  • dry mouth
  • fainting
  • false sense of well-being
  • fast, irregular, pounding, or racing heartbeat or pulse
  • headache
  • hives
  • hyperventilation
  • irritability
  • large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
  • loss of appetite
  • loss of bladder control
  • loss of consciousness
  • mood swings
  • nausea
  • nervousness
  • noisy breathing
  • personality changes
  • puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
  • rash
  • restlessness
  • seizures
  • shaking
  • skin rash
  • swelling around the eyes
  • tightness in the chest
  • total body jerking
  • trouble with sleeping
  • troubled with breathing
  • unpleasant breath odor
  • vision changes
  • vomiting of blood
  • wheezing
  • yellow eyes or skin

Minor Side Effects

Some of the side effects that can occur with famotidine 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:

Less common:
  • Difficulty having a bowel movement (stool)
Rare
  • Swelling of the breasts or breast soreness in both females and males
Incidence not known:
  • Abdominal or stomach discomfort
  • blemishes on the skin
  • change in taste or bad, unusual or unpleasant (after) taste
  • continuing ringing or buzzing or other unexplained noise in the ears
  • decreased interest in sexual intercourse
  • difficulty with moving
  • dry skin
  • fear
  • hair loss or thinning of the hair
  • hearing loss
  • hives or welts
  • inability to have or keep an erection
  • loss in sexual ability, desire, drive, or performance
  • mood or mental changes
  • muscle cramps
  • muscle stiffness
  • pimples
  • redness of the skin
  • redness of the white part of the eyes
  • seeing, hearing, or feeling things that are not there
  • sleeplessness
  • unable to sleep
  • weight loss

For Healthcare Professionals

Applies to famotidine: compounding powder, intravenous solution, oral powder for reconstitution, oral tablet, oral tablet chewable, oral tablet disintegrating

General

The most commonly reported side effects include headache, dizziness, constipation, and diarrhea.[Ref]

Gastrointestinal

Common (1% to 10%): Constipation, diarrhea
Uncommon (0.1% to 1%): Nausea, vomiting, flatulence, dry mouth, abdominal discomfort or distension[Ref]

Nervous system

Convulsions occurred in patients with renal dysfunction.[Ref]

Common (1% to 10%): Headache, dizziness
Very rare (less than 0.01%): Paresthesia, somnolence, epileptic seizures, convulsion
Frequency not reported: Grand mal seizure, taste disorder[Ref]

Dermatologic

Uncommon (0.1% to 1%): Rash, pruritus
Rare (0.01% to 0.1%): Urticaria, angioneurotic edema
Very rare (less than 0.01%): Alopecia, severe skin reactions, toxic epidermal necrolysis, Stevens-Johnson syndrome, epidermal necrolysis
Frequency not reported: Acne, dry skin, flushing[Ref]

Other

Uncommon (0.1% to 1%): Fatigue
Frequency not reported: Asthenia, fatigue, facial/orbital edema, tinnitus[Ref]

Metabolic

Uncommon (0.1% to 1%): Loss of appetite
Frequency not reported: Anorexia[Ref]

Hematologic

Rare (0.01% to 0.1%): Thrombocytopenia, leukopenia, agranulocytosis, pancytopenia
Frequency not reported: Neutropenia[Ref]

Hepatic

Rare (0.01% to 0.1%): Intrahepatic cholestasis, jaundice, increased liver enzyme abnormalities (transaminases, gamma GT, alkaline phosphatase, bilirubin)
Frequency not reported: Cholestatic jaundice, hepatitis[Ref]

Hypersensitivity

Rare (0.01% to 0.1%): Hypersensitivity reactions, anaphylaxis[Ref]

Respiratory

Rare (0.01% to 0.1%): Bronchospasm
Frequency not reported: Interstitial pneumonia[Ref]

Musculoskeletal

Rare (0.01% to 0.1%): Arthralgia
Very rare (less than 0.01%): Muscle cramps
Frequency not reported: Rhabdomyolysis, musculoskeletal pain[Ref]

Psychiatric

When patients obtained follow-up, psychic disturbances were found to be reversible.[Ref]

Very rare (less than 0.01%): Hallucinations, disorientation, confusion, anxiety, agitation, depression, reduced libido, insomnia
Frequency not reported: Psychic disturbances[Ref]

Cardiovascular

QT interval prolongation occurred in patients with renal dysfunction.[Ref]

Very rare (less than 0.01%): Chest tightness, prolonged QT interval
Frequency not reported: Arrhythmia, atrioventricular block, palpitation[Ref]

Genitourinary

Very rare (less than 0.01%): Impotence[Ref]

Ocular

Frequency not reported: Conjunctival injection[Ref]

Endocrine

Frequency not reported: Gynecomastia[Ref]

References

1. "Product Information. Pepcid (famotidine)." Merck & Co, Inc, West Point, PA.

2. Cerner Multum, Inc. "Australian Product Information." O 0

3. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

4. "Product Information. Pepcid AC (famotidine)." Johnson and Johnson/Merck, Fort Washington, PA.

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

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

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