Can I Take These?

Can You Take Caffeine and Melatonin Together?

No documented interaction was identified between melatonin and caffeine in the sources reviewed.

No documented interaction identifiedEvidence: Moderate

See the full Caffeine page and Melatonin 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 caffeine fits neither. MedlinePlus's caffeine page does not mention melatonin.

No documented interaction between Caffeine and Melatonin 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 MedlinePlus's caffeine page were checked directly, full text, in both directions. Caffeine is not an anticoagulant/antiplatelet drug or an epilepsy medication, so melatonin's two named caution classes do not apply. (Caffeine's own stimulant effect on sleep is a separate, non-drug-interaction consideration outside this record's scope.)

What the sources say

Caffeine — MedlinePlus, U.S. National Library of MedicineMelatonin: What You Need To Know — National Center for Complementary and Integrative Health (NIH)

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.

Related interactions