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What the FDA labels say about taking them together

Calcitonin salmon and lithium

Calcitonin salmon's FDA label of September 15, 2024 names lithium in its drug interactions section; the lithium labels PlainMeds reads (4) do not name calcitonin salmon. The calcitonin salmon label: “Concomitant use of calcitonin salmon and lithium may lead to a reduction in plasma lithium concentrations due to increased urinary clearance of lithium.”

Check it at the source: the calcitonin salmon FDA label on DailyMed (effective September 15, 2024, Mylan Institutional LLC); the lithium FDA label on DailyMed (effective December 23, 2025, Glenmark Pharmaceuticals Inc., USA).

What does the calcitonin salmon label say about lithium?

Calcitonin salmon label, drug interactions

Concomitant use of calcitonin salmon and lithium may lead to a reduction in plasma lithium concentrations due to increased urinary clearance of lithium.

Source: FDA drug label (Miacalcin), Mylan Institutional LLC, effective September 15, 2024 (SPL set 26caf31f-7f7c-48a8-a1ac-35d2ceefda2b), via openFDA; the full label on DailyMed

What does the lithium label say about calcitonin salmon?

Lithium's label (effective December 23, 2025) and its 3 other brand-application labels do not name calcitonin salmon 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

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

10Calcitonin salmon generic labelers
24Lithium generic labelers
Calcitonin salmonLithium
Labeled forOsteoporosisBipolar disorder
Boxed warningNoYes
Pharmacy cost (NADAC)$13.10 per mL 200 unit spr$0.104 per capsule 300 mg capsule
Shortage nowNo current entryNo 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?