Amoxicillin / Omeprazole / Rifabutin Side Effects

Medically reviewed by Drugs.com. Last updated on Apr 25, 2024.

Applies to amoxicillin / omeprazole / rifabutin: oral capsule delayed release.

Other side effects

Some side effects of amoxicillin / omeprazole / rifabutin 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

• headache

Less common

• acid or sour stomach
• back pain
• belching
• change or loss of taste
• difficulty having a bowel movement (stool)
• heartburn
• indigestion
• itching of the vagina or genitals
• loss of appetite
• stomach discomfort or upset
• thick, white vaginal discharge with mild or no odor
• trouble sleeping

Incidence not known

• change in taste bad unusual or unpleasant (after) taste
• continuing ringing or buzzing or other unexplained noise in ears
• decreased interest in sexual intercourse
• dry skin
• hair loss or thinning of the hair
• hearing loss
• inability to have or keep an erection
• increased sweating
• loss in sexual ability, desire, drive, or performance

Serious side effects

Along with its needed effects, amoxicillin / omeprazole / rifabutin 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 immediately if any of the following side effects occur while taking amoxicillin / omeprazole / rifabutin:

Incidence not known

• black, tarry stools
• bleeding gums
• blistering, peeling, loosening of the skin
• blood in the urine or stools
• blurred vision or other change in vision
• chest pain or tightness
• chills
• cloudy urine
• confusion
• cough
• cracks in the skin
• decreased urine
• diarrhea
• difficulty in moving
• difficulty with swallowing
• dizziness
• dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
• dry mouth
• eye pain
• fast heartbeat
• fever
• greatly decreased frequency of urination or amount of urine
• hives, itching, or skin rash
• increased thirst
• joint or muscle pain
• large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
• loss of heat from the body
• mood or mental changes
• muscle aches, cramps, pains, or stiffness
• muscle cramps in the hands, arms, feet, legs, or face
• numbness and tingling around the mouth, fingertips, or feet
• painful or difficult urination
• pinpoint red spots on the skin
• puffiness or swelling of the eyelids or around the eyes, face, lips or tongue
• red, irritated eyes
• red skin lesions, often with a purple center
• red, swollen skin
• scaly skin
• seizures
• sensitivity of the eye to light
• severe stomach cramps and pain
• sore throat
• sores, ulcers, or white spots in the mouth or on the lips
• stomach tenderness
• sweating
• swelling of the breasts or breast soreness in both females and males
• swelling of the feet or lower legs
• tearing
• trembling
• trouble breathing
• unusual bleeding or bruising
• unusual tiredness or weakness
• watery and severe diarrhea, which may also be bloody

For healthcare professionals

Applies to amoxicillin / omeprazole / rifabutin: oral delayed release capsule.

General

The most commonly reported side effects included headache, diarrhea, chromaturia, and rash.^[Ref]

Nervous system

• Very common (10% or more): Headache (up to 15.6%)
• Frequency not reported: Migraine

Amoxicillin:

• Postmarketing reports: Convulsions, dizziness

Omeprazole:

• Frequency not reported: Dizziness
• Postmarketing reports: Double vision, dream abnormalities, hepatic encephalopathy, paresthesia, somnolence, taste perversion, tremors, vertigo

Rifabutin:

• Frequency not reported: Taste perversion^[Ref]

Gastrointestinal

• Very common (10% or more): Diarrhea (up to 14.3%)
• Common (1% to 10%): Abdominal pain, dyspepsia, nausea
• Frequency not reported: Abdominal pain lower, abdominal pain upper, Clostridioides difficile-associated diarrhea, epigastric discomfort, oropharyngeal pain, vomiting

Amoxicillin:

• Postmarketing reports: Black hairy tongue

Omeprazole:

• Frequency not reported: Acid regurgitation, constipation, flatulence
• Postmarketing reports: Abdominal swelling, dry mouth, fatal pancreatitis, fecal discoloration, fundic gland polyps, irritable colon, microscopic colitis, mucosal atrophy of the tongue, pancreatitis, stomatitis

Rifabutin:

• Frequency not reported: Eructation, flatulence^[Ref]

Genitourinary

• Very common (10% or more): Chromaturia (up to 13%)
• Common (1% to 10%): Vulvovaginal candidiasis
• Frequency not reported: Vaginal discharge, vulvovaginal burning sensation, vulvovaginal mycotic infection, vulvovaginal pruritus

Amoxicillin:

• Postmarketing reports: Crystalluria

Omeprazole:

• Postmarketing reports: Glycosuria, hematuria, proteinuria, testicular pain, urinary frequency, urinary tract infection^[Ref]

Dermatologic

• Common (1% to 10%): Rash
• Frequency not reported: Maculopapular rash, morbilliform rash, urticaria

Amoxicillin:

• Postmarketing reports: Thrombocytopenic purpura

Omeprazole:

• Postmarketing reports: Alopecia, dry skin, hyperhidrosis, petechiae, photosensitivity, pruritus, purpura, urticaria

Rifabutin:

• Frequency not reported: Skin discoloration^[Ref]

Musculoskeletal

• Frequency not reported: Cutaneous lupus erythematosus, systemic lupus erythematosus

Omeprazole:

• Frequency not reported: Back pain
• Postmarketing reports: Bone fracture, joint pain, leg pain, muscle cramps, muscle weakness, myalgia

Rifabutin:

• Frequency not reported: Arthralgia, myalgia, myositis^[Ref]

Hematologic

Amoxicillin:

• Postmarketing reports: Agranulocytosis, anemia, eosinophilia, hemolytic anemia, leukopenia, thrombocytopenia

Omeprazole:

• Postmarketing reports: Agranulocytosis, anemia, hemolytic anemia, leukocytosis, leukopenia, neutropenia, pancytopenia, thrombocytopenia

Rifabutin:

• Frequency not reported: Anemia, hemolysis, leukopenia, pancytopenia, thrombocytopenia
• Postmarketing reports: Agranulocytosis, lymphopenia^[Ref]

Other

Omeprazole:

• Frequency not reported: Asthenia
• Postmarketing reports: Tinnitus

Rifabutin:

• Frequency not reported: Asthenia, fever, flu-like syndrome, pain^[Ref]

Respiratory

• Frequency not reported: Nasal congestion, nasopharyngitis

Omeprazole:

• Frequency not reported: Cough, upper respiratory infection

Rifabutin:

• Frequency not reported: Dyspnea^[Ref]

Hepatic

Amoxicillin:

• Postmarketing reports: Acute cytolytic hepatitis, cholestasis, cholestatic jaundice, liver dysfunction

Omeprazole:

• Postmarketing reports: Cholestatic disease, fatal liver failure, fatal liver necrosis, hepatocellular disease, jaundice, mixed hepatitis

Rifabutin:

• Frequency not reported: Hepatitis, jaundice^[Ref]

Psychiatric

Amoxicillin:

• Postmarketing reports: Agitation, anxiety, behavioral changes, confusion, hyperactivity, insomnia

Omeprazole:

• Postmarketing reports: Aggression, agitation, anxiety, apathy, confusion, depression, hallucinations, insomnia, nervousness

Rifabutin:

• Frequency not reported: Insomnia^[Ref]

Cardiovascular

Omeprazole:

• Postmarketing reports: Angina, bradycardia, elevated blood pressure, epistaxis, palpitations, peripheral edema, tachycardia

Rifabutin:

• Frequency not reported: Chest pain^[Ref]

Metabolic

Omeprazole:

• Postmarketing reports: Anorexia, hypoglycemia, hypomagnesemia with/without hypocalcemia and/or hypokalemia, hyponatremia, weight gain

Rifabutin:

• Frequency not reported: Anorexia^[Ref]

Ocular

• Frequency not reported: Uveitis

Omeprazole:

• Postmarketing reports: Blurred vision, dry eye syndrome, ocular irritation, optic atrophy, optic neuritis^[Ref]

Immunologic

• Frequency not reported: Fungal infection

Omeprazole:

• Postmarketing reports: Microscopic pyuria^[Ref]

Hypersensitivity

• Frequency not reported: Hypersensitivity reactions^[Ref]

Oncologic

Omeprazole:

• Postmarketing reports: Gastroduodenal carcinoids^[Ref]

Gastroduodenal carcinoids occurred as a manifestation of Zollinger-Ellison syndrome in patients who received long-term treatment; this condition is a manifestation of the underlying condition.^[Ref]

Endocrine

Omeprazole:

• Postmarketing reports: Gynecomastia^[Ref]

Renal

• Frequency not reported: Acute interstitial nephritis

Omeprazole:

• Postmarketing reports: Elevated serum creatinine^[Ref]

Further information

Amoxicillin/omeprazole/rifabutin 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.

Some side effects may not be reported. You may report them to the FDA.

Medical Disclaimer