Nidagel (Metronidazole)

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Nidagel Brand
Dosage Quantity & Price
Metronidazole (Generic alternate to Nidagel) Generic

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Table of contents:

Nidagel is a medication used to treat bacterial infections of the vagina, specifically bacterial vaginosis.

Nidagel contains metronidazole, which belongs to the class of antibiotics. It is available as a vaginal gel with a strength of 0.75%. It works by killing bacteria and parasites. However, it will not work for vaginal fungus or yeast infections.

Use and Dosage

To use Nidagel, simply apply the vaginal gel to the affected area inside the vagina, usually once or twice a day, as directed by your healthcare professional. Keep in mind that the product may leak and stain your underwear, so wearing a sanitary napkin during treatment is recommended. Follow the directions for use included in the package and continue using the gel for the full prescribed period, even if you are menstruating.

It's not uncommon to experience mild irritation upon initial application. However, if the irritation becomes severe or persists for more than a few minutes, consult a healthcare professional.

Typically, the gel is used once a day for several days. Your pharmacist may suggest a different schedule that is better suited for you. Complete the full course of treatment to fully benefit from the medication. Avoid consuming any alcohol or alcohol-containing products while taking this medication and for a few days after discontinuing it. Alcohol consumption while taking Nidagel can lead to vomiting and painful cramps.

Take Nidagel regularly and exactly as prescribed by the doctor. Keep taking the gel until the prescription is complete even if you feel better. If you stop taking the medication too early, the infection may return and be harder to treat.

If you miss a dose, take it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.

Side Effects

Common Side Effects of Nidagel (Metronidazole):

  • Buzzing, ringing, or whistling sound heard in the ears
  • Change in taste sensation
  • Coated or furry tongue
  • Darker urine
  • Diarrhea
  • Dizziness or lightheadedness
  • Headache
  • Loss of appetite
  • Nausea
  • Sleepiness
  • Stomach pain or cramps
  • Unpleasant or sharp metallic taste
  • Vomiting

Serious Side Effects of Nidagel (Metronidazole):

  • Any vaginal irritation, discharge, or dryness not present before use of this medicine
  • Confusion
  • Eye pain
  • Fever or unexpected infections
  • Hallucinations
  • Hearing loss
  • Mouth ulcers
  • Numbness, tingling, pain, or weakness in hands or feet
  • Signs of depression (e.g., poor concentration, changes in weight, changes in sleep, decreased interest in activities, thoughts of suicide)
  • Skin rash, redness, or itching
  • Vision changes
  • Convulsions (seizures)
  • Difficulty coordinating body movement
  • Extreme sensitivity to bright light
  • Severe watery or bloody diarrhea

Forms and Strength

Nidagel (Metronidazole) is available in the following forms and strength:

Nidagel: Vaginal gel

  • 0.75%


  • Nidagel should only be used for bacterial infections of the vagina and is not effective against yeast or fungal infections.
  • It should only be used under the prescription and guidance of a healthcare provider.
  • Individuals with a history of blood disorders, nerve disorders, or liver disease should use Nidagel with caution.
  • The use of alcohol or alcoholic products should be avoided while using Nidagel as it can cause a disulfiram-like reaction.
  • Nidagel may cause side effects such as nausea, headaches, and vaginal irritation and should be reported to the healthcare provider if they persist or worsen.
  • Pregnant and breastfeeding women should use Nidagel with caution and under the guidance of a healthcare provider.
  • Nidagel may interact with other medications, such as blood thinners and seizure medications, and may increase the risk of side effects or reduce the effectiveness of the medication. Healthcare providers should be informed of all medications and supplements being taken.
  • Individuals with a history of allergic reactions to metronidazole or other nitroimidazole antibiotics should not use Nidagel.
  • Nidagel may cause a metallic taste in the mouth or mild gastrointestinal disturbances. These side effects are usually temporary, and resolve on their own, but should be reported to the healthcare provider if they persist or worsen.
  • Individuals with a neurological disorder or history of seizures should use Nidagel with caution as it may exacerbate these conditions.
  • Use of Nidagel in children should be carefully monitored and only used under the guidance of a healthcare provider.
  • Nidagel may cause dizziness or headaches and individuals should avoid driving or operating heavy machinery until they know how the medication affects them.
  • Nidagel contains a sulfite, which may cause an allergic reaction in individuals with sulfite sensitivity.

Frequently Asked Questions (FAQ)

Is Nidagel effective for all cases of bacterial vaginosis?

Nidagel is effective for most cases of bacterial vaginosis, but there are some cases where other antibiotics may be more appropriate. Healthcare providers should determine the most appropriate treatment based on the individual case.

How long does it take for Nidagel to work?

Nidagel typically starts to work within a few days, but completes the full course of treatment, even if symptoms improve before the end of treatment.

Can Nidagel be used to treat other infections?

Nidagel is specifically formulated for the treatment of bacterial infections of the vagina and is not effective against infections in other parts of the body.

How should Nidagel be stored?

Nidagel should be stored at room temperature, away from heat and moisture.


It's important to purchase Nidagel from verified Canadian pharmacy.

Additional information

Generic name:



Vaginal gel



Quantities Available:



Online Pharmacies Canada has provided information from third parties intended to increase awareness and does not contain all the information about Nidagel (Metronidazole). Talk to your doctor or other qualified medical practitioners for medical attention or advice, or if you have any concerns about Nidagel (Metronidazole).