Levocarnitine Lyophilized Injection is a parenteral formulation of L-carnitine, an amino acid–like nutrient that plays a key role in energy metabolism. It is prepared as a lyophilized (freeze-dried) powder, which must be reconstituted before administration.

Here are the main details:

1. Composition and Form:

• Active ingredient: Levocarnitine (L-carnitine).

• Supplied as sterile lyophilized powder in vials.

• Reconstituted with sterile water or other recommended diluent for intravenous (IV) or intramuscular (IM) use.

2. Mechanism of Action:

• L-carnitine is essential for the transport of long-chain fatty acids into mitochondria for β-oxidation, producing energy.

• Helps remove toxic acyl groups from cells by forming acylcarnitine esters, supporting metabolic balance.

• Supplementation corrects carnitine deficiency, improves energy metabolism, and prevents buildup of toxic metabolites.

3. Indications:

• Primary systemic carnitine deficiency (genetic disorder).

• Secondary carnitine deficiency due to chronic kidney disease, hemodialysis, or certain metabolic disorders.

• Adjunct therapy in conditions where mitochondrial fatty acid metabolism is impaired (e.g., inborn errors of metabolism).

• Sometimes used in cardiomyopathy, muscle weakness, or certain drug-induced toxicities (like valproic acid–related hyperammonemia).

4. Administration:

• Reconstituted and given IV infusion (slow administration) or IM injection.

• Dosage depends on severity of deficiency, patient weight, and clinical condition.

• Often used in hospital or clinical settings under medical supervision.

5. Side Effects:

• Generally well tolerated.

• Possible nausea, vomiting, diarrhea, or abdominal cramps.

• Rare: muscle weakness in patients with uremia, seizures in predisposed individuals.

• Local pain or irritation at the injection site.

• Mild “fishy” body odor (due to metabolism to trimethylamine).

6. Contraindications:

• Known hypersensitivity to levocarnitine or formulation components.

• Use cautiously in patients with seizure disorders (may increase risk/frequency of seizures).

7. Precautions:

• Monitor plasma carnitine levels in long-term therapy.

• Dose adjustment may be required in renal impairment.

• IV use should be slow to reduce risk of side effects like muscle cramps or arrhythmias.

8. Storage:

• Store lyophilized vials in a cool, dry place, protected from light.

• Reconstituted solution should be used promptly or within recommended stability limits.