Metronidazole is the generic name of the medicine. In the U.S., medicines containing this antibiotic are available under the brand name Flagyl, Metro, Flagyl IV, Flagyl ER. 500mg tablets of this medicine are commonly used to treat:
- Parasitic infections including 'Giardia infections' of the small intestine
- Amoebic liver abscess
- Amoebic dysentery (severe infection of the colon resulting in bloody diarrhea)
- Skin infection
- Dental abscess
- Bacterial vaginosis
- Abscesses in the pelvis, abdomen and brain caused by susceptible anaerobic bacteria
- Infection of the colon caused by a bacterium called C. difficile.
- Crohn's disease
- Trichomonas vaginalis
- Carriers of Trichomonas that do not exhibit any symptoms of the infection
- Pelvic Inflammatory Disease
- Helicobacter pylori infection that causes stomach or intestinal ulcers
Metronidazole tablets are available in various preparations such as 250 mg, 500 mg, 750 mg. Apart from these, 375 mg capsules are also available. Cream and gel have 0.75% and 1% metronidazole, while the lotion contains 0.75%. Injections with 5 mg/ml of metronidazole are sometimes used. Cream or gel containing this antibiotic is used to treat acne rosacea. The vaginal gel is used to treat bacterial vaginosis. For giardia, 250 mg tablets are recommended, three times daily, for 5 days. The following table explains the uses of metronidazole more clearly.
|Name of the Disease||Metronidazole Dosage|
|Amoebic dysentery||750 mg orally, daily 3 times for 5 - 10 days|
|Amoebic liver abscess||500 - 750 mg orally, daily 3 times for 5 - 10 days|
|Anaerobic infections||7.5 mg/kg orally, every 6 hours, not to exceed 4 grams daily|
|Bacterial Vaginosis (tablet)||750 mg orally, once daily for 7 days|
|Bacterial Vaginosis (gel)||0.75% vaginal gel, apply it once or twice daily for 5 days|
|Clostridium difficile infection||250 - 500 mg orally, daily 4 times for 5 - 10 days / 500 - 750 orally, daily 3 times for 5-10 days|
|Giardia infection||250 mg orally, daily 3 times for 5 days|
|Helicobacter pylori infection||800 - 1500 mg orally, daily for several days in combination with other drugs|
|Pelvic inflammatory disease (PID)||500 mg orally, daily twice for 14 days in combination with other drugs|
|Trichomoniasis||2g single dose or 1 g twice, for one day|
|Rosacea||gel 0.75 - 1%, apply topically, once daily|
Metronidazole should not be taken by pregnant women and nursing moms. Serious side effects of metronidazole include seizures and nerve damage resulting in numbness and tingling sensation in extremities (peripheral neuropathy). Such severe side effects are rarely observed but minor side effects like nausea, headache, loss of appetite, metallic taste, and skin rash can be sometimes experienced by the person. While on metronidazole, alcohol should be strictly avoided. Consumption of this antibiotic along with alcohol can lead to severe side effects like increased heart rate, high blood pressure, seizures, liver cirrhosis, breathing difficulty, headache, digestion problems, etc.
Benefits of Metronidazole 500mg Tablets for Dogs and Cats
You need a prescription from your vet if you want to use metronidazole for dogs and cats. Benefits of this medicine for dogs and cats are:
- The antibiotic works great for inflammatory bowel disease.
- It lowers the symptoms of infections, including those caused by Giardia, the intestinal parasite. Such infections often lead to diarrhea.
- It also works great for periodontal diseases.
The dose and duration of the treatment may vary according to the specific condition being treated. And remember, you should give metronidazole to your pet, for the entire length of time, prescribed by your veterinarian. Some pets may be allergic to this antibiotic, so check for the allergy before giving the dose. Overdose of the medicine may cause nausea, vomiting, dizziness, loss of balance or coordination, or seizures. So, you are expected to follow the instructions religiously.
Disclaimer: The information presented in this article is meant to provide guidelines and should not be treated as a medical advice. You should consult your doctor for any of the problems mentioned above.