Details of Drug-Drug Interaction
| Drug General Information (ID: DDITOVYIGW) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Drug Name | Amprenavir | Drug Info | Calcium carbonate | Drug Info | |||||
| Drug Type | Small molecule | Small molecule | |||||||
| Therapeutic Class | Anti-Hiv Agents | Antacids/Minerals And Electrolytes | |||||||
| Structure | |||||||||
| Mechanism of Amprenavir-Calcium carbonate Interaction (Severity Level: Moderate) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Altered gastric pH Click to Show/Hide Mechanism Graph | |||||||||
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| Drug Name | Amprenavir | Calcium carbonate | |||||||
| Mechanism | Gastric pH sensitive | Gastric alkalinizer | |||||||
| Key Mechanism Factor 1 | |||||||||
| Factor Name | Gastric pH | ||||||||
| Factor Description | The normal pH range of gastric acid is between 1.5 and 3.5 and is highly acidic, consisting mainly of hydrochloric acid. Changes in the pH of the stomach can alter the absorption of drugs. | ||||||||
| Mechanism Description |
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| Recommended Action | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Management | Amprenavir should be administered at least 1 hour before or after antacids or other oral preparations containing antacids (e.g., didanosine buffered tablets or pediatric oral solution). | ||||||||
| References | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Product Information. Agenerase (amprenavir). Glaxo Wellcome, Research Triangle Pk, NC. | ||||||||||||||||||
| 2 | Product Information. Lexiva (fosamprenavir). GlaxoSmithKline, Research Triangle Park, NC. | ||||||||||||||||||