Drug Groups

approved

Description

Antiprotozoal agent effective in trypanosomiasis, leishmaniasis, and some fungal infections; used in treatment of pneumocystis pneumonia in HIV-infected patients. It may cause diabetes mellitus, central nervous system damage, and other toxic effects. [PubChem]

Indication

For the treatment of pneumonia due to Pneumocystis carinii.

Pharmacology

Pentamidine is an antiprotozoal agent. It is an aromatic diamidine, and is known to have activity against Pneumocystis carinii. The exact nature of its antiprotozoal action is unknown. in vitro studies with mammalian tissues and the protozoan Crithidia oncopelti indicate that the drug interferes with nuclear metabolism producing inhibition of the synthesis of DNA, RNA, phospholipids and proteins. Little is known about the drug's pharmacokinetics. The medication is also useful in Leishmaniasis and in prophylaxis against sleeping sickness caused by Trypanosoma brucei gambiense. Hydration before treatment lessens the incidence and severity of side effects, which include liver or kidney dysfunction, hypertension, hypotension, hypoglycemia, hypocalemia, leukopenia, thrombcytopenia, anemia, and allergic reaction. It is generally well-tolerated.

Toxicity

Symptoms of overdose include pain, nausea, anorexia, hypotension, fever, rash, bad taste in mouth, confusion/hallucinations, dizziness, and diarrhea.

Affected Organisms

Biotransformation

Hepatic.

Absorption

Absorbed poorly through the gastrointestinal tract and is usually administered parenterally.

Half Life

9.1-13.2 hours

Protein Binding

69%

References

External Links