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MetroGel Side Effects

Generic Name: metronidazole topical

Note: This page contains information about the side effects of metronidazole topical. Some of the dosage forms included on this document may not apply to the brand name MetroGel.

For the Consumer

Applies to metronidazole topical: vaginal cream, vaginal gel/jelly, vaginal suppository

In addition to its needed effects, some unwanted effects may be caused by metronidazole topical (the active ingredient contained in MetroGel). In the event that any of these side effects do occur, they may require medical attention.

Major Side Effects

You should check with your doctor immediately if any of these side effects occur when taking metronidazole topical:

More common:
  • Itching in the vagina
  • pain during sexual intercourse
  • thick, white vaginal discharge with no odor or with a mild odor
Less common:
  • Abdominal or stomach cramping or pain
  • burning on urination or need to urinate more often
  • burning or irritation of penis of sexual partner
  • itching, stinging, or redness of the genital area

Minor Side Effects

Some of the side effects that can occur with metronidazole topical may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

Less common:
  • Diarrhea
  • dizziness or lightheadedness
  • dryness of the mouth
  • feeling of a furry tongue
  • headache
  • loss of appetite
  • metallic taste or other change in taste sensation
  • nausea
  • vomiting

Metronidazole may cause your urine to become dark. This is harmless and will go away when you stop using this medicine.

Side Effects: Post Treatment

After you stop taking this drug, it is possible that you may still experience side effects that need medical attention. If you notice any of the following side effects check with your doctor immediately:

  • Any vaginal or genital irritation or itching
  • pain during sexual intercourse
  • thick, white vaginal discharge not present before treatment, with no odor or with a mild odor

For Healthcare Professionals

Applies to metronidazole topical: topical cream, topical gel, topical kit, topical lotion, vaginal gel with applicator

General

Topical: The most frequently reported side effects were nasopharyngitis, upper respiratory tract infection, and headache.

Vaginal: The most frequently reported side effects were fungal infection, vulvovaginal candidiasis, headache, vulvovaginal pruritus, nausea, diarrhea, metrorrhagia, breast pain, infection, rash, pharyngitis, abdominal pain, pruritus, and dysmenorrhea.[Ref]

Local

Very common (10% or more): Mild dryness (17.1%), mild scaling (16.2%)
Common (1% to 10%): Moderate dryness, moderate scaling, mild pruritus, moderate pruritus, severe pruritus, mild stinging/burning, moderate stinging/burning, severe stinging/burning, local allergic reaction
Uncommon (0.1% to 1%): Severe dryness, severe scaling
Frequency not reported: Application site reaction, condition aggravated, transient redness[Ref]

Genitourinary

Common (1% to 10%): Dysmenorrhea, breast pain, metrorrhagia, vulvovaginal candidiasis, vulvovaginal pruritus, urinary tract infection, vaginal itching/irritation/burning/numbness, pelvic discomfort, vaginal discharge
Uncommon (0.1% to 1%): Vaginal mycosis, urine discolored, vulva edema, menstrual discomfort/irregularities, vaginal spotting/bleeding
Frequency not reported: Breast enlargement, dysuria, female lactation, labial edema, leucorrhoea, menorrhagia, salpingitis, urinary frequency, vaginitis, vulvovaginal disorder[Ref]

Gastrointestinal

Common (1% to 10%): Abdominal pain, nausea, diarrhea, gastritis, tooth disorder, gastrointestinal discomfort, abdominal cramps, vomiting
Uncommon (0.1% to 1%): Constipation, dry mouth, abdominal bloating/noise
Frequency not reported: Dyspepsia, flatulence, gingivitis[Ref]

Nervous system

Common (1% to 10%): Headache, dizziness
Uncommon (0.1% to 1%): Tingling/numb extremities, taste metallic, dysgeusia, paresthesia, hypothesia
Frequency not reported: Peripheral neuropathy, ataxia
Postmarketing reports: Taste perversion[Ref]

Respiratory

Common (1% to 10%): Pharyngitis, bronchitis, nasopharyngitis, sinusitis, upper respiratory tract infection, nasal congestion
Frequency not reported: Asthma, rhinitis[Ref]

Cardiovascular

Common (1% to 10%): Hypertension[Ref]

Dermatologic

Common (1% to 10%): Pruritus, rash, contact dermatitis, dry skin, skin discomfort, burning/stinging, erythema, worsening of rosacea, skin irritation
Frequency not reported: Acne, sweating, urticaria, skin exfoliation, facial edema, zoster lesion, nose pustule, vesicular bullous eruption
Postmarketing reports: Hyperpigmentation, pigmentation disorder, hypertrichosis[Ref]

Other

Very common (10% or more): Fungal infection (12%), flu syndrome (up to 11%)
Common (1% to 10%): Infection, influenza, abscess, pain
Uncommon (0.1% to 1%): Fatigue
Frequency not reported: Mucous membrane disorder[Ref]

Psychiatric

Uncommon (0.1% to 1%): Depression, difficult sleep, irritability
Frequency not reported: Insomnia[Ref]

Musculoskeletal

Uncommon (0.1% to 1%): Back pain, cramp[Ref]

Oncologic

Uncommon (0.1% to 1%): Basal cell carcinoma
Frequency not reported: Skin cancer[Ref]

Ocular

Frequency not reported: Eye irritation, watery eye
Postmarketing reports: Eyelid edema[Ref]

Hepatic

Frequency not reported: Liver function test abnormal[Ref]

Immunologic

Frequency not reported: Allergic reaction[Ref]

Metabolic

Common (1% to 10%): Appetite decreased
Frequency not reported: Anorexia, hypomagnesemia[Ref]

Renal

Frequency not reported: Pyelonephritis[Ref]

References

1. "Product Information. MetroLotion (metroNIDAZOLE topical)." Galderma Laboratories Inc, Cranbury, NJ.

2. "Product Information. Noritate (metroNIDAZOLE topical)." sanofi-aventis, Bridgewater, NJ.

3. Cerner Multum, Inc. "Australian Product Information." O 0

4. "Product Information. MetroNIDAZOLE Vaginal (metroNIDAZOLE topical)." Oceanside Pharmaceuticals, Bridgewater, NJ.

5. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

6. "Product Information. MetroNIDAZOLE Topical (metroNIDAZOLE topical)." G & W Laboratories Inc, South Plainfield, NJ.

7. "Product Information. Rosadan (metroNIDAZOLE topical)." Medimetriks Pharmaceuticals Inc, Fairfield, NJ.

8. "Product Information. Metrogel (metronidazole)." Galderma Laboratories Inc, Fort Worth, TX.

9. "Product Information. Vandazole (metroNIDAZOLE topical)." Upsher-Smith Laboratories Inc, Minneapolis, MN.

Not all side effects for MetroGel may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

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