What the FDA labels say about taking them together
Lithium and methamphetamine
Methamphetamine's FDA label of September 30, 2024 names lithium in its warnings and precautions section; the lithium labels PlainMeds reads (4) do not name methamphetamine. The methamphetamine label: “… reuptake inhibitors (SNRIs), triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, tryptophan, buspirone, and St. John’s Wort.”
Check it at the source: the lithium FDA label on DailyMed (effective December 23, 2025, Glenmark Pharmaceuticals Inc., USA); the methamphetamine FDA label on DailyMed (effective September 30, 2024, Hikma Pharmaceuticals USA Inc.).
What does the lithium label say about methamphetamine?
Lithium's label (effective December 23, 2025) and its 3 other brand-application labels do not name methamphetamine in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Lithium Carbonate), Glenmark Pharmaceuticals Inc., USA, effective December 23, 2025 (SPL set 63b3790f-a9b5-47f4-bae1-ddf8b43c13c1), via openFDA; the full label on DailyMed
What does the methamphetamine label say about lithium?
Methamphetamine label, warnings and precautionsSerotonin syndrome, a potentially life-threatening reaction, may occur when amphetamines are used in combination with other drugs that affect the serotonergic neurotransmitter systems such as monoamine oxidase inhibitors (MAOIs), selective serotonin reuptake inhibitors (SSRIs), serotonin norepinephrine reuptake inhibitors (SNRIs), triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, tryptophan, buspirone, and St. John’s Wort [see Drug Interactions ( 7.1 )].
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
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
| Lithium | Methamphetamine | |
|---|---|---|
| Labeled for | Bipolar disorder | ADHD |
| Boxed warning | Yes | Yes |
| Pharmacy cost (NADAC) | $0.104 per capsule 300 mg capsule | $5.10 per tablet 5 mg tablet |
| Shortage now | No current entry | No current entry |
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