https://interactions.guidetherapeutiquevih.com/en/interaction-details?id=13491

Document made available to the pharmacist to communicate a drug interaction to the doctor.
DOWNLOADFamotidine by increasing gastric pH may decrease the solubility, absorption, and plasma concentration of ledipasvir .
Possible decrease of clinical efficacy.
Monitor for clinical efficacy.
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Administrer at the same time and/or 12 hours after the combined drug.
Recommended dosage : dose not exceeding famotidine 40 mg twice daily or equivalent.
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| Reference number | 
|---|
| # patients | 
| HIV/HCV | 
| Dose | 
| Frequency | 
| Cmax | 
| AUC | 
| 3073 | 3073 | 
|---|---|
| 12 | 12 | 
| - | - | 
| 90/400 mg | 90/400 mg | 
| QD | QD | 
| - 20%/+ 15% † | - 17%/± 0% †† | 
| - 11%/+ 11 † | - 2%/- 5% †† | 
| 3073 | 3073 | 
|---|---|
| 12 | 12 | 
| - | - | 
| 40 mg | 40 mg | 
| x 1 * | x 1 ** | 
Ref #3073 : 
* At the same time than ledepasvir/sofosbuvir; 
† GS-331007, sofosbuvir active metabolite : AUC +6% and Cmax +6%; 
** 12 hours after ledipasvir/sofobuvir;
†† GS-331007, sofosbuvir active metabolite : AUC +6% and Cmax +13%.