Alexander KS, Kothapalli MR, Dollimor D. Stability of an extemporaneously formulated levothyroxine sodium syrup compounded from commercial tablets.
Int J Pharm Compd 1997;
1:60-64. [PMID:
23995891]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The stability of 40 micrograms/mL extemporaneously formulated syrup from commercially available levothyroxine sodium tablets, using sorbitol 70% as the diluting vehicle, was studied. The concentration of levothyroxine sodium in the formulation was 40 micrograms/mL. The protocol included accelerated stability testing at temperatures of 40 deg, 50 deg, 60 deg, and 70 deg C and a high-performance liquid chromatography assay procedure using testosterone propionate as the internal standard. The data were analyzed using an Arrhenius plot to determine the shelf-life of formulation. The shelf-life was found to be approximately 15 days at 25 deg C and 47 days at 5 deg C.
Collapse