Quinidine
| Interaction Color Code | Clinical Bottom Line | Clinical Effects | Drug 1 effect | Drug 2 dose | Drug 2 effect | Management | |
|---|---|---|---|---|---|---|---|
| Lenacapavir Quinidine | Red: Avoid combination | Do not coadminister: potentially increased levels of quinidine | Potential increased risk of quinidine adverse effects |
Use alternative agents. |
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| Ritonavir Quinidine 1082 | Red: Avoid combination | Do not coadminister: Potential for increased levels of quinidine | Increased quinidine effects (eg, cardiac arrhythmias) |
Not studied |
Not studied (may increase quinidine levels) |
Use alternative agents |
|
| Darunavir Quinidine 1018 | Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential for increased risk of quinidine adverse effects (e.g. cardiac arrhythmias, exacerbation of heart failure) |
If coadministering, monitor and adjust quinidine as indicated |
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| Atazanavir Quinidine 860 | Orange: Minimal data to guide interaction | Minimal data to guide interaction: weigh risks and benefits of using this combination | Potential for increased quinidine effects (e.g. cardiac arrhythmias) |
If coadministering use with caution. Monitor for toxicity. |
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| Elvitegravir Quinidine 226 | Orange: Minimal data to guide interaction | Minimal data to guide interaction: risks likely to outweigh benefits | Potential for increased risk of quinidine adverse effects (e.g. cardiac arrhythmias) |
If coadministering use with caution and monitor for quinidine toxicity. Consider therapeutic drug monitoring and ECG |

