Stability of Tetracycline Hydrochloride in Miracle Mouthwash Formulations Containing Diphenhydramine and Dexamethasone Elixir

Persistent Link:
http://hdl.handle.net/10150/614108
Title:
Stability of Tetracycline Hydrochloride in Miracle Mouthwash Formulations Containing Diphenhydramine and Dexamethasone Elixir
Author:
Fazel, Mahdieh; Goodlet, Kellie; Myrdal, Paul; Karlage, Kelly
Affiliation:
College of Pharmacy, The University of Arizona
Issue Date:
2015
Rights:
Copyright © is held by the author.
Collection Information:
This item is part of the Pharmacy Student Research Projects collection, made available by the College of Pharmacy and the University Libraries at the University of Arizona. For more information about items in this collection, please contact Jennifer Martin, Associate Librarian and Clinical Instructor, Pharmacy Practice and Science, jenmartin@email.arizona.edu.
Publisher:
The University of Arizona.
Abstract:
Objectives: To assess the solubility and stability of tetracycline in compounded miracle mouthwash solutions over time, and at different temperatures (room temperature versus refrigerated) and pH (unaltered versus pH 7). Methods: Miracle mouthwash (MMW) solutions were compounded using tetracycline HCl capsules and 1:1 pseudo-dexamethasone elixir and diphenhydramine. High-performance liquid chromatography (HPLC) was used to measure the tetracycline concentrations in the MMW samples tested. Data on tetracycline crystal composition over time were also collected using powder x-ray diffraction, differential scanning calorimetry (DSC), and thermal gravimetric analysis (TGA). Results: For the tetracycline MMW solutions stored at room temperature, only 16% of the original tetracycline remained in solution after 24 hours, stabilizing at 65-81 mcg/mL on day 5 then decreasing further down to 45 mcg/mL by day 15. Similar results were obtained for the refrigerated tetracycline MMW solution (11% of original concentration after 5 days, with a decrease from 31-54 mcg/mL on day 5 to 22 mcg/mL on day 15). Tetracycline concentrations appeared to undergo a steeper decline in MMW solutions of pH 7 than in unadjusted MMW solutions (pH 4.68). All MMW samples exhibited a conversion from tetracycline HCl to tetracycline hexahydrate. Conclusions: Tetracycline solubility decreases rapidity in MMW within 24 hours of compounding regardless of temperature. MMW solutions at pH 7 may have further reduced solubility. Stability decreases at a stable rate from tetracycline HCl to tetracycline hexahydrate.
Description:
Class of 2015 Abstract
Keywords:
tetracycline hydrochloride; Miracle mouthwash (MMW); diphenhydramine; dexamethasone elixir
Advisor:
Myrdal, Paul; Karlage, Kelly

Full metadata record

DC FieldValue Language
dc.contributor.advisorMyrdal, Paulen
dc.contributor.advisorKarlage, Kellyen
dc.contributor.authorFazel, Mahdiehen
dc.contributor.authorGoodlet, Kellieen
dc.contributor.authorMyrdal, Paulen
dc.contributor.authorKarlage, Kellyen
dc.date.accessioned2016-06-22T16:23:52Z-
dc.date.available2016-06-22T16:23:52Z-
dc.date.issued2015-
dc.identifier.urihttp://hdl.handle.net/10150/614108-
dc.descriptionClass of 2015 Abstracten
dc.description.abstractObjectives: To assess the solubility and stability of tetracycline in compounded miracle mouthwash solutions over time, and at different temperatures (room temperature versus refrigerated) and pH (unaltered versus pH 7). Methods: Miracle mouthwash (MMW) solutions were compounded using tetracycline HCl capsules and 1:1 pseudo-dexamethasone elixir and diphenhydramine. High-performance liquid chromatography (HPLC) was used to measure the tetracycline concentrations in the MMW samples tested. Data on tetracycline crystal composition over time were also collected using powder x-ray diffraction, differential scanning calorimetry (DSC), and thermal gravimetric analysis (TGA). Results: For the tetracycline MMW solutions stored at room temperature, only 16% of the original tetracycline remained in solution after 24 hours, stabilizing at 65-81 mcg/mL on day 5 then decreasing further down to 45 mcg/mL by day 15. Similar results were obtained for the refrigerated tetracycline MMW solution (11% of original concentration after 5 days, with a decrease from 31-54 mcg/mL on day 5 to 22 mcg/mL on day 15). Tetracycline concentrations appeared to undergo a steeper decline in MMW solutions of pH 7 than in unadjusted MMW solutions (pH 4.68). All MMW samples exhibited a conversion from tetracycline HCl to tetracycline hexahydrate. Conclusions: Tetracycline solubility decreases rapidity in MMW within 24 hours of compounding regardless of temperature. MMW solutions at pH 7 may have further reduced solubility. Stability decreases at a stable rate from tetracycline HCl to tetracycline hexahydrate.en
dc.language.isoen_USen
dc.publisherThe University of Arizona.en
dc.rightsCopyright © is held by the author.en
dc.subjecttetracycline hydrochlorideen
dc.subjectMiracle mouthwash (MMW)en
dc.subjectdiphenhydramineen
dc.subjectdexamethasone elixiren
dc.titleStability of Tetracycline Hydrochloride in Miracle Mouthwash Formulations Containing Diphenhydramine and Dexamethasone Elixiren_US
dc.typetexten
dc.typeElectronic Reporten
dc.contributor.departmentCollege of Pharmacy, The University of Arizonaen
dc.description.collectioninformationThis item is part of the Pharmacy Student Research Projects collection, made available by the College of Pharmacy and the University Libraries at the University of Arizona. For more information about items in this collection, please contact Jennifer Martin, Associate Librarian and Clinical Instructor, Pharmacy Practice and Science, jenmartin@email.arizona.edu.en
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