Tinidazole

More frequently reported side effects include: nausea, bitter taste, and metallic taste. See below for a comprehensive list of adverse effects.

Applies to tinidazole: oral tablet

Along with its needed effects, tinidazole 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 tinidazole:

Rare

• Change in consciousness
• cough
• difficulty breathing
• loss of consciousness
• noisy breathing
• shortness of breath
• tightness in chest
• wheezing

Incidence unknown

• Black, tarry stools
• bleeding gums
• blood in urine or stools
• burning, numbness, tingling, or painful sensations
• chest pain
• chills
• difficulty swallowing
• fast, irregular, pounding, or racing heartbeat or pulse
• fever
• hives
• increased transaminase levels
• large, hive-like swelling on face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
• lower back or side pain
• nausea
• painful or difficult urination
• pale skin
• pinpoint red spots on skin
• reddening of the skin, especially around ears
• seizures
• sore throat
• sores, ulcers, or white spots on lips or in mouth
• swelling of eyes, face, or inside of nose
• swollen glands
• ulcers
• unsteadiness or awkwardness
• unusual bleeding or bruising
• unusual tiredness or weakness
• weakness in arms, hands, legs, or feet

Some side effects of tinidazole 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

• Bitter taste
• metallic taste

Less common

• Acid or sour stomach
• belching
• cramps
• difficulty having a bowel movement (stool)
• dizziness
• general feeling of discomfort or illness
• headache
• heartburn
• indigestion
• loss of appetite
• pain or discomfort in chest, upper stomach, or throat
• vomiting
• weight loss

Rare

• Body aches or pain
• coating on tongue
• congestion
• depression
• dryness or soreness of throat
• hoarseness
• mood or mental changes
• runny nose
• tender, swollen glands in neck
• voice changes

Incidence unknown

• Abnormal liver
• darkened urine
• diarrhea
• difficulty in moving
• feeling of constant movement of self or surroundings
• giddiness
• lightheadedness
• muscle pain or stiffness
• pain, swelling, or redness in joints
• sensation of spinning
• shakiness and unsteady walk
• sleepiness
• sleeplessness
• swelling or inflammation of the mouth
• tongue discoloration
• trembling, or other problems with muscle control or coordination
• trouble sleeping
• unable to sleep
• white or brownish vaginal discharge
• white patches in the mouth or throat or on the tongue

Applies to tinidazole: compounding powder, oral tablet

Reported side effects were typically mild, infrequent, and self-limiting. Gastrointestinal side effects were reported most often.

Common (1% to 10%): Nausea, dyspepsia/cramps/epigastric discomfort, vomiting, constipation, diarrhea, abdominal pain, flatulence

Rare (less than 0.1%): Furry tongue

Frequency not reported: Tongue discoloration, stomatitis, dryness of mouth, salivation, oral candidiasis, glossitis

Common (1% to 10%): Metallic/bitter taste, headache, dizziness, vertigo

Rare (less than 0.1%): Coma

Frequency not reported: Convulsions, peripheral neuropathy, ataxia, giddiness, drowsiness, burning sensation, paresthesia, hypoesthesia/numbness, sensory disturbances, dysgeusia

Common (1% to 10%): Weakness/fatigue/malaise

Frequency not reported: Flushing, fever/pyrexia, thirst, Candida overgrowth, fatigue, malaise

In a study involving 450 patients with fixed drug eruptions, 8 patients were found to have this oral drug as the probable causative agent. The fixed drug eruptions varied as to duration, shape and size, symptoms, number of lesions, and body site(s) affected. The study did not break these factors down for each individual causative agent.

Common (1% to 10%): Allergic dermatitis, pruritus

Frequency not reported: Urticaria, rash, sweating, angioedema, fixed drug eruption

Common (1% to 10%): Anorexia, decreased appetite

Common (1% to 10%): Urinary tract infection, dysuria/painful urination, urine abnormality, pelvic pain, vulvovaginal discomfort, vaginal odor, menorrhagia

Frequency not reported: Darkened urine/chromaturia, increased vaginal discharge, female genital pruritus, Candida vaginitis

Common (1% to 10%): Upper respiratory tract infection

Rare (less than 0.1%): Bronchospasm, dyspnea, pharyngitis

Rare (less than 0.1%): Confusion, depression

Frequency not reported: Insomnia

Rare (less than 0.1%): Reversible thrombocytopenia

Frequency not reported: Neutropenia, leukopenia, increased eosinophil count, decreased hemoglobin

Severe acute hypersensitivity reactions have been reported during initial or subsequent exposure to this drug.

Frequency not reported: Drug hypersensitivity

Postmarketing reports: Severe acute hypersensitivity reactions, hypersensitivity reactions (included urticaria, pruritus, rash, flushing, sweating, dryness of mouth, fever, burning sensation, thirst, salivation, angioedema, Stevens-Johnson syndrome, erythema multiforme)

Frequency not reported: Hepatic abnormalities (included raised transaminase level), increased AST, increased blood bilirubin

Frequency not reported: Increased blood urea

Frequency not reported: Palpitations

Frequency not reported: Arthralgias, myalgias, arthritis