Drug Index


Synonym :


Mechanism :

The tetracyclines are primarily bacteriostatic and are thought to exert their antimicrobial effect by the inhibition of protein synthesis. Tetracyclines are active against a wide range of gram-negative and gram-positive organisms. The drugs in the tetracycline class have closely similar antimicrobial spectra, and cross-resistance among them is common.

Indication :

• Rickettsia: (Rocky Mountain spotted fever, typhus fever and the typhus group, Q fever, rickettsia pox, tick fevers)

• Mycoplasma pneumoniae

• Psittacosis and ornithosis

• Lymphogranuloma venereum and granuloma inguinale

• Relapsing fever (Borrelia recurrentis)

• Haemophilus ducreyi (chancroid)

• Yersinia pestis and Francisella tularensis

• Bacteroides species

• Vibrio comma and Vibrio fetus

• Brucella species

Contraindications :

Hypersensitivity to any of the tetracyclines; severe renal or hepatic disease. Therapy of common infections in children under 12. Any condition in which bactericidal effect is essential (bacterial endocarditis). Avoid prophylactic administration to surgical cases, if possible.

Dosing :

>8 years: 6.6-13.2 mg/kg orally divided into two to four doses.

Adverse Effect :

Anorexia, epigastric distress, nausea, vomiting, diarrhea, bulky loose stools, stomatitis, sore throat, glossitis, black hairy tongue, dysphagia, hoarseness, enterocolitis, pancreatitis, maculopapular, erythematous rashes, nephrogenic diabetes insipidus, hepatic cholestasis, pseudotumor cerebri, hypersensitivity reactions, anemia, hemolytic anemia, thrombocytopenia, thrombocytopenic purpura, neutropenia and eosinophilia.

Interaction :

Anticoagulant therapy: May require downward adjustment of their anticoagulant dosage.
Penicillin: May interfere with the bactericidal action of penicillin.

03/11/2020 01:22:38 Demeclocycline
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