Medically reviewed by Jessica Swirble, PharmD
Last updated on March 16, 2024

Drug Information | Side Effects | Use & Dosage | Request a Prescription

The use of tinidazole has been shown to cause side effects in some patients.

Common mild side effects of tinidazole use include:

• Nausea
  
• Vomiting
  
• Diarrhea
  
• Constipation
  
• Stomach pain and gas
  
• Headache
  
• Metallic taste in the mouth
  
• Fatigue
  
• Decreased appetite
  
  

More severe side effects include:

• Allergic reactions (rash, itching, swelling of the face, lips, tongue, or throat)
  
• Seizures
  
• Numbness or tingling in the hands or feet
  
• Dark urine
  
• Yellowing of the skin or eyes
  
  

Seek medical attention immediately if you experience any severe symptoms while taking tinidazole. If you experience mild side effects that become severe or do not go away after a few days, speak to a healthcare provider right away.

Tell your healthcare provider about any existing medical conditions, allergies, or other medications you are taking before starting treatment with tinidazole. This includes prescription drugs, over-the-counter medications, and dietary supplements, as they may interact with this drug.

Tell your provider if you are taking these medications or supplements:

• Other antibiotics
  
• Anticoagulants (blood thinners)
  
• Antifungal medications
  
• Cholestyramine
  
• HIV medications
  
• Cimetidine
  
  

You should also mention medical conditions such as:

• Yeast infections
  
• Dialysis
  
• Liver disease
  
• Kidney disease
  
• Blood disorders
  
• Seizures or epilepsy
  
• Cancer diagnosis
  
• Cockayne syndrome
  
• Hematologic disorders
  
  

If you are pregnant, planning to become pregnant, or breastfeeding, consult your healthcare provider before using tinidazole to assess potential risks and benefits.

You can follow your regular diet while taking tinidazole. However, it's essential to avoid consuming alcohol during and for at least three days after completing tinidazole treatment, as it may cause severe reactions such as nausea, vomiting, flushing, and headache.

Talk to your provider about drinking grapefruit juice while taking tinidazole.

Your healthcare provider will provide specific instructions regarding the use of tinidazole with food, beverages, and other medications. It's essential to follow their guidance to ensure the effectiveness of the treatment and minimize the risk of side effects.

If you suspect an overdose of tinidazole or experience severe symptoms, seek immediate medical attention or contact the poison control helpline at 1-800-222-1222. Symptoms of an overdose may include nausea, vomiting, dizziness, and seizures.

If an individual has collapsed, is having seizures, or is unresponsive, call 9-1-1 immediately.