Details of Drug-Drug Interaction
| Drug General Information (ID: DDIIQ9BEUR) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Drug Name | Calcium carbonate | Drug Info | Ledipasvir | Drug Info | |||||
| Drug Type | Small molecule | Small molecule | |||||||
| Therapeutic Class | Antacids/Minerals And Electrolytes | Antiviral Agents | |||||||
| Structure | |||||||||
| Mechanism of Calcium carbonate-Ledipasvir Interaction (Severity Level: Moderate) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Altered gastric pH Click to Show/Hide Mechanism Graph | |||||||||
 |
|||||||||
| Drug Name | Calcium carbonate | Ledipasvir | |||||||
| Mechanism | Gastric alkalinizer | Gastric pH sensitive | |||||||
| 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 |
|
||||||||
| Recommended Action | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Management | If an antacid is required, the antacid should be taken 4 hours before or 4 hours after administration of ledipasvir-sofosbuvir. The same precaution may be applicable to other drugs with antacid effects. | ||||||||
| References | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Product Information. Harvoni (ledipasvir-sofosbuvir). Gilead Sciences, Foster City, CA. | ||||||||||||||||||