Para Que Sirve El Metronidazol De 500 Mg

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Introducing para que sirve el metronidazol de 500 mg, a topic that has garnered considerable attention, we delve into the realm of pharmacology, unraveling the intricacies of this remarkable medication. In this comprehensive guide, we’ll embark on a journey to decipher its multifaceted applications, exploring its mechanisms of action, dosage guidelines, potential side effects, and crucial considerations for specific populations.

Brace yourself for an immersive exploration into the world of metronidazole, leaving no stone unturned in our quest for knowledge.

Metronidazole 500 mg, a synthetic antimicrobial agent, stands as a cornerstone in the treatment of various infections caused by anaerobic microorganisms. Its effectiveness against protozoa, such as Giardia lamblia and Entamoeba histolytica, further solidifies its position as a formidable weapon in the fight against parasitic infestations.

Uses of Metronidazole 500mg

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Metronidazole 500mg is an antibiotic medication used to treat a variety of infections caused by bacteria and parasites. It works by interfering with the DNA of the microorganisms, preventing them from multiplying and causing infection.

Bacterial Infections

  • Anaerobic bacterial infections:Metronidazole is effective against anaerobic bacteria, which do not require oxygen to grow. These infections can occur in various parts of the body, including the abdomen, pelvis, and skin.
  • Periodontal disease:Metronidazole is sometimes used in combination with other antibiotics to treat periodontal disease, an infection of the gums and supporting structures of the teeth.
  • Helicobacter pylori infection:Metronidazole is used in combination with other medications to eradicate Helicobacter pylori, a bacterium that can cause stomach ulcers and stomach cancer.

Parasitic Infections

  • Trichomoniasis:Metronidazole is the first-line treatment for trichomoniasis, a sexually transmitted infection caused by the parasite Trichomonas vaginalis.
  • Giardiasis:Metronidazole is used to treat giardiasis, an intestinal infection caused by the parasite Giardia lamblia.
  • Amoebiasis:Metronidazole is effective against Entamoeba histolytica, the parasite that causes amoebiasis, an intestinal infection that can also spread to other organs.

Dosage and Administration

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Metronidazole 500mg is typically administered orally, with or without food. The dosage and frequency of administration vary depending on the specific indication being treated.

Trichomoniasis, Para que sirve el metronidazol de 500 mg

For the treatment of trichomoniasis, a single 2g dose of Metronidazole 500mg is recommended.

Contraindications and Precautions

Para que sirve el metronidazol de 500 mg

Before using Metronidazole 500mg, it’s crucial to be aware of potential contraindications and precautions to ensure safe and effective treatment.


  • Known Hypersensitivity:Individuals with a known hypersensitivity to Metronidazole or any of its components should not use this medication.
  • Disulfiram Interaction:Metronidazole should not be used concurrently with disulfiram, as it may cause severe reactions such as nausea, vomiting, abdominal cramps, and flushing.
  • Alcohol Consumption:Consuming alcohol while taking Metronidazole can lead to a disulfiram-like reaction, characterized by unpleasant symptoms such as facial flushing, nausea, vomiting, and headaches.

Drug Interactions

Metronidazole 500mg may interact with other medications, including:

  • Anticoagulants (e.g., warfarin):Metronidazole can potentiate the effects of anticoagulants, increasing the risk of bleeding.
  • Lithium:Metronidazole can increase lithium levels in the blood, potentially leading to toxicity.
  • Phenytoin:Metronidazole may decrease the effectiveness of phenytoin, an anticonvulsant medication.


Certain precautions should be considered when using Metronidazole 500mg:

  • Pregnancy and Lactation:Metronidazole should be used with caution during pregnancy and lactation, as its safety in these populations has not been fully established.
  • Neurological Effects:Prolonged use of Metronidazole may cause neurological side effects, such as numbness, tingling, or seizures.
  • Hepatic Impairment:Individuals with liver impairment may require dosage adjustments to avoid potential accumulation of Metronidazole.

Side Effects

Metronidazole 500mg can cause a range of side effects, both common and rare. The most common side effects are usually mild and transient, but some can be more severe and require medical attention.

The following table summarizes the common side effects of Metronidazole 500mg and their management strategies:

Side EffectManagement Strategy
NauseaTake the medication with food or milk. Avoid fatty or spicy foods.
VomitingTake the medication with food or milk. If vomiting persists, contact your doctor.
DiarrheaDrink plenty of fluids to prevent dehydration. If diarrhea is severe, contact your doctor.
Abdominal painTake the medication with food or milk. Apply a warm compress to the abdomen.
HeadacheTake over-the-counter pain relievers, such as ibuprofen or acetaminophen.
DizzinessAvoid driving or operating machinery if you feel dizzy.
Metallic taste in the mouthBrush your teeth or rinse your mouth with a mouthwash.
Dark urineDrink plenty of fluids to dilute the urine. If your urine remains dark, contact your doctor.

Special Populations: Para Que Sirve El Metronidazol De 500 Mg

Para que sirve el metronidazol de 500 mg

Metronidazole 500mg may be used in specific populations, including pregnant women, nursing mothers, and children. However, dosage adjustments and monitoring may be necessary.


Metronidazole 500mg should be used during pregnancy only if the potential benefits outweigh the potential risks to the fetus. Metronidazole crosses the placenta and can reach the fetus. Animal studies have shown that metronidazole can cause birth defects, including cleft palate and limb abnormalities.

However, there have been no well-controlled studies in pregnant women to evaluate the risk of birth defects associated with metronidazole use.

Nursing Mothers

Metronidazole 500mg is excreted in breast milk. Therefore, nursing mothers should not take metronidazole unless the potential benefits outweigh the potential risks to the infant. Metronidazole can cause side effects in infants, including diarrhea, vomiting, and abdominal pain.


Metronidazole 500mg should be used with caution in children. The dosage of metronidazole for children should be based on the child’s weight and age. Children are more likely to experience side effects from metronidazole than adults, including nausea, vomiting, and abdominal pain.