Can You Take Melatonin and Potassium Together?
No documented interaction was identified between melatonin and potassium in the sources reviewed.
See the full Melatonin page and Potassium page for other reviewed interactions and reference information.
What the interaction means
NCCIH's melatonin page names exactly two classes needing medical supervision -- epilepsy and blood thinner medications -- and potassium fits neither. Potassium's own NIH fact sheet does not mention melatonin.
No documented interaction between Melatonin and Potassium was identified in the authoritative sources reviewed. This is not a guarantee that no interaction exists for every dose, formulation, or individual -- it means the sources checked did not document one.
Practical context
NCCIH's melatonin page and potassium's NIH ODS fact sheet were checked directly, full text, in both directions. Potassium is not an anticoagulant/antiplatelet drug or an epilepsy medication, so melatonin's two named caution classes do not apply.
What the sources say
Last reviewed 2026-08-25
Medical information disclaimer: this information is general and educational. It does not diagnose conditions, prescribe treatment, or determine whether a combination is safe for you personally. Follow your prescription label and ask a pharmacist or clinician before starting, stopping, or combining products. Full disclaimer.
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