Can Metronidazole treat sinus infection? 

Can Metronidazole treat sinus infection?

No, Metronidazole can not treat sinus infections, which is why it is not prescribed for that purpose. Metronidazole is an antibiotic which is active against a number of infections caused by anaerobic bacteria, which do not require oxygen to survive. 

These bacteria usually cause gastrointestinal and urinogenital infections. Metronidazole can also be used for the management and treatment of gastrointestinal and vaginal protozoal infections (1). 

Sinus infections are caused by gram-positive bacteria, against which Metronidazole has little to no activity. If you think you have a sinus infection, talk to your healthcare provider. Metronidazole can’t help sinus, throat, or ear infections.

Your doctor will determine the best possible antibiotic to treat your symptoms effectively. Don’t start taking antibiotics on your own. Some sinus infections don’t even need antibiotics and they go away on their own. 

What medications treat sinus infections? 

Some sinus infections don’t really need antibiotics, and symptomatic treatment can help. Nasal sprays and antihistamines are usually prescribed for such infections (2). 

If your sinus infection does need an antibiotic, your doctor will most likely prescribe you Amoxicillin, which is considered the drug of choice for these infections. Make sure you check with your doctor before starting to treat your sinus infection on your own. 

If you don’t need antibiotics, you shouldn’t take them. Improper or unnecessary use of antibacterials can make bacterial resistance against these meds. 

How to know you have a sinus infection?

Sinus infections, also known as sinusitis, can cause a variety of symptoms that can vary in severity. Some common signs and symptoms of a sinus infection include:

  • Facial pain or pressure
  • Headache
  • Congestion or stuffy nose
  • Runny nose
  • Fatigue
  • Fever
  • Toothache
  • Thick yellow or green nasal discharge
  • Cough
  • Sore throat
  • Postnasal drip (mucus dripping down the back of your throat)
  • Ear pain
  • Loss of smell or taste

If you have several of these symptoms and they persist for more than 7 days or are severe, you should see a doctor. They can diagnose a sinus infection and recommend appropriate treatment.

Was this helpful?

Thanks for your feedback!

References

1.-

National Library of Medicine, NIH. MedlinePlus. Metronidazole [Internet]. U.S. National Library of Medicine. 2021 [cited 2023 Jan 24]. Available from: https://medlineplus.gov/druginfo/meds/a689011.html.

2.-

National Health Services NHS. Sinusitis (sinus infection) [Internet]. NHS; 2019 [cited 2023 Jan 24]. Available from: https://www.nhs.uk/conditions/sinusitis-sinus-infection/.