Metronidazolo

Metronidazole

Usi approvati

• Symptomatic Trichomoniasis Metronidazole tablets are indicated for the treatment of T. vaginalis infection in females and males when the presence of the trichomonad has been confirmed by appropriate laboratory procedures (wet smears and/or cultures).
• Asymptomatic Trichomoniasis Metronidazole tablets are indicated in the treatment of asymptomatic T. vaginalis infection in females when the organism is associated with endocervicitis, cervicitis, or cervical erosion.
• Since there is evidence that presence of the trichomonad can interfere with accurate assessment of abnormal cytological smears, additional smears should be performed after eradication of the parasite.
• Treatment of Asymptomatic Sexual Partners T. vaginalis infection is a venereal disease.

Forme e dosaggi

• Metronidazole tablets, USP are available as follows: 250 mg - White, round, convex tablets debossed " PLIVA 333 " on one side and unscored on the other side.

Non deve essere usato in caso di

• Hypersensitivity Metronidazole tablets are contraindicated in patients with a prior history of hypersensitivity to metronidazole or other nitroimidazole derivatives.
• In patients with trichomoniasis, metronidazole tablets are contraindicated during the first trimester of pregnancy (see PRECAUTIONS).
• Psychotic Reaction with Disulfiram Use of oral metronidazole is associated with psychotic reactions in alcoholic patients who were using disulfiram concurrently.
• Do not administer metronidazole to patients who have taken disulfiram within the last two weeks (see PRECAUTIONS, Drug Interactions).

Avvertenze e precauzioni

• Hypersensitivity Reactions Hypersensitivity reactions including severe cutaneous adverse reactions (SCARs) can be serious and potentially life threatening (see ADVERSE REACTIONS).
• Severe Cutaneous Adverse Reactions Severe cutaneous adverse reactions (SCARs) including toxic epidermal necrolysis (TEN), Stevens-Johnson syndrome (SJS), drug reaction with eosinophilia and systemic symptoms (DRESS), and acute generalized exanthematous pustulosis (AGEP) have been reported with the use of metronidazole.
• Symptoms can be serious and potentially life threatening.
• If symptoms or signs of SCARs develop, discontinue metronidazole immediately and institute appropriate therapy.

Effetti indesiderati comuni

• most common adverse reactions reported have been referable to the gastrointestinal tract, particularly nausea, sometimes accompanied by headache, anorexia, and occasionally vomiting; diarrhea; epigastric distress; and abdominal cramping and constipation.

Meccanismo d'azione

Microbiology Mechanism of Action Metronidazole, a nitroimidazole, exerts antibacterial effects in an anaerobic environment against most obligate anaerobes. Once metronidazole enters the organism by passive diffusion and activated in the cytoplasm of susceptible anaerobic bacteria, it is reduced; this process includes intracellular electron transport proteins such as ferredoxin, transfer of an electron to the nitro group of the metronidazole, and formation of a short-lived nitroso free radical.

Titolare dell'autorizzazione:

Teva Pharmaceuticals USA, Inc.

Versione della scheda:

16 luglio 2024

Le sezioni qui sopra sono citate dalla scheda in lingua inglese, perché è quel documento a portare l'approvazione. Dove un'autorità europea pubblica le stesse informazioni in italiano, il link è tra le fonti. Non traduciamo da soli i testi regolatori: un errore di traduzione in una controindicazione sarebbe più pericoloso di una riga in un'altra lingua.

Questa sezione riporta le informazioni sul prodotto approvate. Il testo è condensato dalla sintesi dell'autorità stessa e il documento completo è linkato tra le fonti.