Aged cheese: histamine content (3.31 mg/100 g)

3.31 mg/100 g

Reported range 3.31–38.99 mg per 100 g. Concentrations vary with ripeness, storage and processing, so a single figure would be misleading.

By portion

Portion	Grams	Histamine
1 slice	28 g	0.93 mg
1 oz	28 g	0.93 mg

Source

“Cured, semi-cured and grated cheese: mean 33.10 mg/kg, maximum 389.86 mg/kg”

Low-Histamine Diets: Is the Exclusion of Foods Justified by Their Histamine Content? (Nutrients 2021;13(5):1395) · 2021 · CC BY 4.0

Food composition data, not medical advice. Reported tolerance thresholds vary widely between individuals, so a value being high here does not mean you will react to it.