Orange: histamine content (0.01 mg/100 g)

Orange contains about 0.01 mg of histamine per 100 g, which is low for histamine.

0.01 mg/100 g

Reported range below detection to 0.03 mg per 100 g. Some samples had none detectable; the floor is a threshold, not a measurement.Concentrations vary with ripeness, storage and processing, so a single figure would be misleading.

By portion

PortionGramsHistamine
1 serving100 g0.01 mg

Source

“Orange ( Citrus sinensis L.) — mean 0.1 mg/kg (n=14); Batista (2007)”
Histamine in Brazilian Foods: A Comprehensive Review of Occurrence and Risk Assessment for Intoxication and Intolerance (Food Science & Nutrition 2025;13:e71151) · 2025 · CC BY 4.0
“Orange, juice — mean 0.1, range 0.03–0.26 mg/kg (n=21); Vieira et al. (2007)”
Histamine in Brazilian Foods: A Comprehensive Review of Occurrence and Risk Assessment for Intoxication and Intolerance (Food Science & Nutrition 2025;13:e71151) · 2025 · CC BY 4.0
“Orange, soft drink — mean 0.0, range nd–0.03 mg/kg (n=35); Vieira et al. (2007)”
Histamine in Brazilian Foods: A Comprehensive Review of Occurrence and Risk Assessment for Intoxication and Intolerance (Food Science & Nutrition 2025;13:e71151) · 2025 · CC BY 4.0
“Orange, juice — mean nd mg/kg (n=3); Vieira et al. (2010)”
Histamine in Brazilian Foods: A Comprehensive Review of Occurrence and Risk Assessment for Intoxication and Intolerance (Food Science & Nutrition 2025;13:e71151) · 2025 · CC BY 4.0

Also tracked for this food: oxalate

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.