What the FDA labels say about taking them together
Methamphetamine and ritonavir
Ritonavir's FDA label of July 23, 2026 names methamphetamine in its drug interactions section; the methamphetamine label PlainMeds reads does not name ritonavir. The ritonavir label: “A dose decrease of methamphetamine may be needed when co-administered with ritonavir.”
Check it at the source: the methamphetamine FDA label on DailyMed (effective September 30, 2024, Hikma Pharmaceuticals USA Inc.); the ritonavir FDA label on DailyMed (effective July 23, 2026, AbbVie Inc.).
What does the methamphetamine label say about ritonavir?
Methamphetamine's label (effective September 30, 2024) does not name ritonavir in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Methamphetamine Hydrochloride), Hikma Pharmaceuticals USA Inc., effective September 30, 2024 (SPL set 90c02ac6-e5e2-4c97-8c68-81e4e389a195), via openFDA; the full label on DailyMed
What does the ritonavir label say about methamphetamine?
Ritonavir label, drug interactionsA dose decrease of methamphetamine may be needed when co-administered with ritonavir.
Source: FDA drug label (Norvir), AbbVie Inc., effective July 23, 2026 (SPL set 2849298e-de6e-47bb-8194-56e075b33fc3), 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
| Methamphetamine | Ritonavir | |
|---|---|---|
| Labeled for | ADHD | HIV |
| Boxed warning | Yes | Yes |
| Pharmacy cost (NADAC) | $5.10 per tablet 5 mg tablet | $0.607 per tablet 100 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