OTC

Gigabac 4.5 MIU (150 mg)

Square Pharmaceuticals PLC · IM/IV Injection

GenericColistimethate Sodium

Strength4.5 MIU (150 mg)

Unit Price

৳ 1

/ 4.5 MIU vial

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The information provided on All Samadhan is intended for general informational purposes only and is prepared based on our best practices. It is not a substitute for professional medical advice, diagnosis, or treatment. While we strive to keep the information accurate and up to date, we do not guarantee its completeness or accuracy. The absence of specific information or warnings about any medicine or service should not be considered as an assurance or endorsement by All Samadhan. All Samadhan shall not be held responsible for any consequences arising from the use of this information. We strongly recommend consulting a qualified healthcare professional or physician for any medical concerns, questions, or clarifications.

Medicine Description

INDICATIONS

Colistimethate is indicated for the treatment of acute or chronic infections caused by sensitive strains of certain gram-negative bacilli. It is particularly indicated in the infection caused by sensitive strains of Pseudomonas aeruginosa. Colistimethate is not indicated for infections due to Proteus ... Read moreColistimethate is indicated for the treatment of acute or chronic infections caused by sensitive strains of certain gram-negative bacilli. It is particularly indicated in the infection caused by sensitive strains of Pseudomonas aeruginosa. Colistimethate is not indicated for infections due to Proteus or Neisseria. Colistimethate is very effective in the treatment of infections due to the following gram-negative organisms: Enterobacter aerogenes, Escherichia coli, Klebsiella pneumoniae and Pseudomonas aeruginosa.

PHARMACOLOGY

Colistimethate is a surface active agent which penetrates into and disrupts the bacterial cell membrane. Colistimethate is polycationic and has both hydrophobic and lipophilic moieties. It interacts with the bacterial cytoplasmic membrane, changing its permeability. This effect is bactericidal. There is also evidence that polymyxins enter the cell and precipitate cytoplasmic components, primarily ribosomes.

DOSAGE

Maintenance dose: 9 MIU/day in 2-3 divided doses. In patients who are critically ill, a loading dose of 9 MIU should be administered.Renal impairment patients: Dose adjustments in renal impairment patients are necessary. Dose reductions are recommended for patients with creatinine clearance < 50 ml/min. Twice daily dosing is recommended.

Creatinine clearance <50-30 ml/min: daily dose 5.5-7.5 MIU
Creatinine clearance <30-10 ml/min: daily dose 4.5-5.5 MIU
Creatinine clearance <10 ml/min: daily dose 3.5 MIU

Haemodialysis (HD) patients:

No-HD days: 2.25 MIU/day (2.2-2.3 MIU/day).
HD days: 3 MIU/day (Should be given after the HD session) Twice daily dosing is recommended.

Pediatric population: The dose should be based on lean body weight.

Children ≤40 kg: 75,000-150,000 IU/kg/day divided into 3 doses.
Children >40 kg: >150,000 IU/kg/day has been reported in children with cystic fibrosis.

Hepatic impairment patients: There are no data in patients with hepatic impairment. Caution is advised when administering colistimethate sodium in these patients.

INTERACTION

Colistimethate should not be given with certain antibiotics like- aminoglycosides and polymyxin due to report of interfere with the nerve transmission at the neuromuscular junction. It should not be given with muscle relaxants e.g., tubocurarine and other drugs including ether, succinylcholine, gallamine, decamethonium and sodium citrate. The concomitant use of Sodium Cephalothin and Colistimethate should be avoided.

SIDE EFFECTS

The following adverse reactions have been reported: gastrointestinal upset, tingling of extremities and tongue, slurred speech, dizziness, vertigo and paresthesia, generalized itching, urticaria and rash, fever, increased blood urea nitrogen (BUN), elevated creatinine and decreased creatinine clearance, respiratory distress and apnea, nephrotoxicity and decreased urine output.

PREGNANCY & LACTATION

There are no adequate and well-controlled studies about the use of Colistimethate in pregnant women. Since colistimethate is transferred across the placental barrier in humans, it should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. It is not known whether Colistimethate is excreted in human breast milk. Therefore, caution should be exercised when administered to nursing women.

PRECAUTIONS & WARNINGS

Colistimethate should be used with caution in patient with impaired renal function. When actual renal impairment is present, Colistimethate may be used, but the greatest caution should be exercised and the dosage should be reduced in proportion to the extent of the impairment. Colistimethate should be used with caution in neonates, infants and children.