Tinidazole (Oral Route)

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Side Effects

Along with its needed effects, a medicine 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:

• Change in consciousness
• Cough
• Difficulty breathing
• Loss of consciousness
• Noisy breathing
• Shortness of breath
• Tightness in chest
• Wheezing

• 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 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:

• Bitter taste
• Metallic taste

• 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

• 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

• 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

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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