How long does it take for metronidazole to work?
Metronidazole starts to work 1 to 2 hours after you take it, because it is quickly absorbed, and it reaches its maximum concentration after 20 minutes to 3 hours. But it may take a couple of days before you start to feel better or notice an improvement in your symptoms. It is important that you still finish the course of metronidazole that your doctor has prescribed, even if you feel better, because the infection may still be present, and it could flare up or recur if you haven’t finished the course.
References
- Metronidazole Tablets 500 mg Medicines.org.UK. https://www.medicines.org.uk/emc/product/5882/smpc#gref
- Metronidazole Northern Devon Healthcare. https://www.northdevonhealth.nhs.uk/wp-content/uploads/2017/11/Metronidazole-sexual-health-clinics.pdf
Read next
What happens if you drink alcohol with metronidazole?
Drinking alcohol while taking metronidazole is not recommended because the combination of metronidazole and alcohol can cause a reaction (often referred to as a disulfiram-like reaction) in some people. Symptoms may include flushing, headaches, nausea, vomiting, and stomach cramps. There has been one reported death associated with this reaction. The product information and health professionals recommend not to drink alcohol during metronidazole treatment and for 3 days after finishing the course. Continue reading
What can I do about the metallic taste of Flagyl?
Metronidazole (brand: Flagyl) can leave a bitter, metallic taste in your mouth. This is a well-known side effect. For many, the bad taste lasts throughout treatment, too, not just when you're swallowing the medicine. There are ways to help mask this taste with certain foods. Continue reading
Is metronidazole safe for dogs? Uses, dosage, side effects?
Metronidazole is an antibiotic used to treat bacterial infections and certain parasites in dogs. It is typically given twice a day, but can be less often in dogs with liver problems. Common side effects of metronidazole in dogs include diarrhea, drooling, and a change in urine color. Continue reading
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