Metronidazole 500 mg Tablets Prescribed Online

Metronidazole tablets are prescribed to treat bacterial vaginosis (BV), an infection of the vagina.¹

Metronidazole tablets are usually taken as a one-time dose (or divided into two doses on one day) or two to four times daily for up to 10 days or longer. Follow the directions on your prescription label carefully and ask your doctor or pharmacist to explain any part you do not understand. Take metronidazole exactly as directed. Do not take more or less of it, or take it more often than prescribed by your doctor.

Swallow the extended-release tablets whole; do not split, chew or crush them.

Continue to take this medication even if you feel well. Do not stop taking it without talking to your doctor. If you stop taking this medication too soon or skip doses, your infection may not be completely treated, and the bacteria may become resistant to antibiotics.

Ask your pharmacist or doctor for a copy of the manufacturer's information for the patient.

Metronidazole tablets start to work one to two hours after ingestion. However, it usually takes a few days to start feeling an improvement in symptoms. Always take the full course of metronidazole prescribed to ensure the infection is treated effectively.²

The dosage and frequency will depend on your provider’s instructions. Generally, metronidazole tablets are usually taken as a one-time dose or two to four times daily for up to 10 days or longer.³

Metronidazole tablets are only available by prescription. It is not available over the counter.⁴ You can get a prescription for metronidazole tablets online from RedBox Rx. Start a low-cost $39 online consult for bacterial vaginosis to see if metronidazole tablets are right for you.

If prescribed, metronidazole tablets cost $25 per treatment (14 tablets) with RedBox Rx. No insurance required. Start a low-cost $39 online consult for bacterial vaginosis to see if metronidazole tablets are right for you. 

Tell your doctor if you have Cockayne syndrome (an inherited condition that causes sensitivity to light, premature aging, failure to gain weight and grow, and delayed development). Your doctor will probably tell you that you should not take metronidazole.

• Tell your doctor and pharmacist if you are allergic to metronidazole, benznidazole, fexinidazole, secnidazole (Solosec), tinidazole (Tindamax), any other medications or any of the ingredients in metronidazole preparations. Ask your pharmacist for a list of the ingredients.

• Tell your doctor or pharmacist if you are taking the following medication or have stopped taking it within the past two weeks: disulfiram.

• Tell your doctor and pharmacist what prescription, nonprescription medications, vitamins, nutritional supplements and herbal products you are taking or plan to take. Your doctor may need to change the doses of your medications or monitor you carefully for side effects.

• The following nonprescription or herbal products may interact with metronidazole: cimetidine (Tagamet HB). Be sure to let your doctor and pharmacist know that you are taking this medication before you start taking metronidazole. Do not start this medication while taking metronidazole without discussing with your healthcare provider.

• Tell your doctor if you have or have ever had Crohn's disease, blood problems, or kidney or liver disease. Also, tell your doctor if you have a yeast infection or a medical condition that affects your brain.

• Tell your doctor if you are pregnant or plan to become pregnant. If you become pregnant while taking metronidazole, call your doctor. Women who are pregnant generally should not take metronidazole during the first trimester (first three months) of pregnancy.

• Tell your doctor if you are breastfeeding or plan to breastfeed. If you take metronidazole while you are breastfeeding, your baby may receive some metronidazole in breast milk. If you are breastfeeding, your doctor may tell you to pump and discard your milk while you are taking metronidazole and for 48 hours after your final dose. Talk to your doctor about the best way to feed your baby while you are taking metronidazole.

• Do not drink alcoholic beverages or take products with alcohol or propylene glycol while taking this medication and for at least three days after your final dose. Alcohol and propylene glycol may cause nausea, vomiting, stomach cramps, headache, sweating and flushing (redness of the face) when taken with metronidazole.

Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.

Side effects of metronidazole tablets include:

• Vomiting.

• Nausea.

• Diarrhea.

• Constipation.

• Upset stomach.

• Stomach cramps.

• Loss of appetite.

• Headache.

• Dry mouth.

• Sharp, unpleasant metallic taste.

• Furry tongue; mouth or tongue irritation.

Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from light, excess heat and moisture (not in the bathroom).

It is important to keep all medication out of sight and reach of children, as many containers (such as weekly pill minders and those for eye drops, creams, patches and inhalers) are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location – one that is up and away, and out of their sight and reach. Unneeded medications should be disposed of in special ways to ensure that pets, children and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program. Talk to your pharmacist or contact your local garbage/recycling department to learn about take-back programs in your community.

In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online at https://www.poisonhelp.org/help. If the victim has collapsed, had a seizure, has trouble breathing or can't be awakened, immediately call emergency services at 911.

Keep all appointments with your doctor and the laboratory. Your doctor will order certain lab tests to check your response to metronidazole.

Before having any laboratory test, tell your doctor and the laboratory personnel that you are taking metronidazole.

Do not let anyone else take your medication. Your prescription is probably not refillable. If you still have symptoms of infection after you finish the metronidazole, call your doctor.

It is important for you to keep a written list of all the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.

The brand name for metronidazole tablets is Flagyl®.

• Metronidazole vaginal gel.

Metronidazole can cause cancer in laboratory animals. Talk to your doctor about the risks and benefits of taking this medication.

1. Mayo Clinic

2. Drugs.com

3. National Library of Medicine

4. Mayo Clinic