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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Song, Jae-Haeng Shin, Sang-Chul |
| Description | Author Affiliation: Song JH ( College of Pharmacy, Chonnam National University, Buggu, Gwangju, Republic of Korea.) |
| Abstract | BACKGROUND: The oral administration of loratadine, an antihistamine, can have a variety of adverse side effects, such as headache, fatigue, and nausea, because of the transient high blood concentration. To avoid these effects, loratadine can be administered using a transdermal drug delivery system. METHOD: This study examined the effects of the drug concentration on drug release from prepared hydroxypropyl methylcellulose gels using a synthetic cellulose membrane at 37 degrees C. The drug concentrations tested were 0.1%, 0.2%, 0.3%, 0.4%, and 0.5% (w/w). The effect of temperature on drug release from the 0.3% loratadine gels was evaluated at 27 degrees C, 32 degrees C, 37 degrees C, and 42 degrees C. Various types of penetration enhancers, such as glycols, glycerides, propylene glycol derivatives, nonionic surfactants, and fatty acids, were incorporated in the gel formulation to increase the level of drug permeation. RESULTS: The rate of drug release increased with increasing drug concentration or temperature. The activation energy for the release of the drug was 5.714 kcal/mol for 0.3% loratadine gel. Among all the enhancers used in this study, polyoxyethylene 2-stearyl ether showed the best enhancing effect. The enhancement factor of the loratadine gel containing the polyoxyethylene 2-stearyl ether was 2.03 compared with that of the loratadine system containing no enhancer. CONCLUSIONS: These results suggest that the topical gel formulation of loratadine containing a penetration enhancer could be developed to enhance the penetration of loratadine. |
| File Format | HTM / HTML |
| ISSN | 03639045 |
| Issue Number | 8 |
| Volume Number | 35 |
| e-ISSN | 15205762 |
| Journal | Drug Development and Industrial Pharmacy |
| Language | English |
| Publisher | Taylor & Francis |
| Publisher Date | 2009-08-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Pharmacology Drug Carriers Chemistry Excipients Loratadine Administration & Dosage Methylcellulose Analogs & Derivatives Administration, Cutaneous Animals Gels Histamine H1 Antagonists, Non-sedating Adverse Effects Pharmacokinetics Hypromellose Derivatives Male Polyethylene Glycols Rats Rats, Sprague-dawley Skin Absorption Temperature Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Drug Discovery Pharmacology Pharmaceutical Science |
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