What the FDA labels say about taking them together
Abacavir and lopinavir/ritonavir
Lopinavir/ritonavir's FDA label of July 23, 2026 names abacavir in its drug interactions section; the abacavir labels PlainMeds reads (2) do not name lopinavir/ritonavir.
Check it at the source: the abacavir FDA label on DailyMed (effective July 17, 2025, Mylan Institutional Inc.); the lopinavir/ritonavir FDA label on DailyMed (effective July 23, 2026, AbbVie Inc.).
What does the abacavir label say about lopinavir/ritonavir?
Abacavir's label (effective July 17, 2025) and its 1 other brand-application label do not name lopinavir/ritonavir in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Abacavir Sulfate), Mylan Institutional Inc., effective July 17, 2025 (SPL set 80c1702a-973c-436a-90f8-69b29674dca0), via openFDA; the full label on DailyMed
What does the lopinavir/ritonavir label say about abacavir?
Lopinavir/ritonavir label, drug interactionsConcomitant Drug Class/Drug Name: Nucleoside Reverse Transcriptase Inhibitors: abacavir zidovudine; Effect on Concentration of Lopinavir or Concomitant Drug: ↓ abacavir ↓ zidovudine; Clinical Comments: The clinical significance of this potential interaction is unknown.
Source: FDA drug label (Kaletra), AbbVie Inc., effective July 23, 2026 (SPL set 8290add3-4449-4e58-6c97-8fe1eec972e3), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Abacavir | Lopinavir/ritonavir | |
|---|---|---|
| Labeled for | HIV | HIV |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | $0.546 per tablet 300 mg tablet | $4.46 per tablet 200-50 mg tablet |
| Shortage now | No current entry | A presentation being discontinued |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once