Lamivudine
| Interaction Color Code | Clinical Bottom Line | Clinical Effects | Drug 1 effect | Drug 2 dose | Drug 2 effect | Management | |
|---|---|---|---|---|---|---|---|
| Tenofovir disoproxil fumarate 3TC 734 | Green: Administer standard doses | Administer standard doses | No significant change |
150 mg BID | Cmax decrease 24% |
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| Lamivudine Sorbitol 701 | Orange: Minimal data to guide interaction | Minimal data to guide interaction: risks likely to outweigh benefits | Potentially decreased lamivudine efficacy |
AUC decreased 20-44% |
3.2 - 13.4 grams daily | Not studied |
Consider using alternative agents. Interaction studied with liquid formulation. If unable to avoid co-administration, monitor for virologic efficacy. |
| Lamivudine Ribavirin 700 | Green: Administer standard doses | Administer standard doses | No significant change |
800 mg daily | |||
| Lamivudine ATV 699 | Green: Administer standard doses | Administer standard doses | No significant change |
400 mg daily x 6 days | Not studied |
||
| Lamivudine Methadone 698 | Green: Administer standard doses | Administer standard doses | Not studied |
No significant change |
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| Lamivudine Entecavir 697 | Green: Administer standard doses | Administer standard doses | No significant change |
No significant change |
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| Lamivudine Buprenorphine / naloxone 696 | Green: Administer standard doses | Administer standard doses | 14 mg daily | No significant change |
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| Lamivudine Interferon alfa 695 | Green: Administer standard doses | Administer standard doses | No significant change |
10 MU three times weekly | No significant change |
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| Lamivudine Adefovir 694 | Green: Administer standard doses | Administer standard doses | Not studied |
10 mg daily | No significant change |
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| Lamivudine G/P 693 | Green: Administer standard doses | Administer standard doses | No significant change |
300 mg / 120 mg daily | GLE AUC decrease 25%, PIB AUC decrease 28% |
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| Lamivudine TMP/SMX 692 | Green: Administer standard doses | Administer standard doses | Potentially increased lamivudine adverse effects |
Lamivudine AUC increased 44% |
160 mg / 800 mg daily x 5 days | Not studied |
|
| Abacavir 3TC 669 | Green: Administer standard doses | Administer standard doses | No significant change |
150 mg x 1 dose | Lamivudine Cmax decreased 35%; AUC decreased 15% |
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| Efavirenz 3TC 424 | Green: Administer standard doses | Administer standard doses | Not studied |
150 mg Q12H x 14 days | No significant change |
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| Lamivudine |

