Physicochemical and Microbiological Stability of Two Oral Solutions of Methadone Hydrochloride 10 mg/mL

In this article, we studied physicochemical and microbiological stability and determined the beyond-use date of two oral solutions of methadone in three storage conditions. For this, two oral solutions of methadone (10 mg/mL) were prepared, with and without parabens, as preservatives. They were packed in amber glass vials kept unopened until the day of the test, and in a multi-dose umber glass bottle opened daily. They were stored at 5 ± 3 °C, 25 ± 2 °C and 40 ± 2 °C. pH, clarity, and organoleptic characteristics were obtained. A stability-indicating high-performance liquid chromatography method was used to determine methadone. Microbiological quality was studied and antimicrobial effectiveness testing was also determined following European Pharmacopoeia guidelines. Samples were analyzed at days 0, 7, 14, 21, 28, 42, 56, 70, and 91 in triplicate. After 91 days of storage, pH remained stable at about 6.5-7 in the two solutions, ensuring no risk of methadone precipitation. The organoleptic characteristics remained stable (colorless, odorless, and bitter taste). The absence of particles was confirmed. No differences were found with the use of preservatives. Methadone concentration remained within 95-105% in all samples. No microbial growth was observed. Hence, the two oral methadone solutions were physically and microbiologically stable at 5 ± 3 °C, 25 ± 2 °C, and 40 ± 2 °C for 91 days in closed and opened amber glass bottles.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:27

Enthalten in:

Molecules (Basel, Switzerland) - 27(2022), 9 vom: 28. Apr.

Sprache:

Englisch

Beteiligte Personen:

Álvaro-Alonso, Elena Alba [VerfasserIn]
Lorenzo, Ma Paz [VerfasserIn]
Gonzalez-Prieto, Andrea [VerfasserIn]
Izquierdo-García, Elsa [VerfasserIn]
Escobar-Rodríguez, Ismael [VerfasserIn]
Aguilar-Ros, Antonio [VerfasserIn]

Links:

Volltext

Themen:

Amber
Drug compounding
High performance liquid chromatography
Journal Article
Methadone
Methadone hydrochloride
Microbiology
Pharmaceutical solutions
Solutions
Stability study
UC6VBE7V1Z

Anmerkungen:

Date Completed 19.05.2022

Date Revised 16.07.2022

published: Electronic

Citation Status MEDLINE

doi:

10.3390/molecules27092812

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM340891106