RecallSep 8, 2026FI Supplements: Potential to be contaminated with Salmonella
848 products scored213 ingredients explainedNo paid placement

Ingredient library

Neutral · Hormone supplement

Melatonin

Also appears on labels as: melatonin

The hormone the body makes to regulate sleep, made synthetically.

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Where it comes from
Synthesized.
Why it's in the product
Added to chews sold for calming and sleep.
Safety and toxicity
Studied in dogs before anesthesia. Drowsiness is its known effect.

General reference, not veterinary advice. Dose, breed, and existing conditions change the answer, so talk to your vet before changing what your pet eats. Think we got this wrong? Tell us and we log it publicly.

Found in 1 scored product

Lowest scores first. Its presence here is not what drove those scores.