What foods contain histamines
Foods that contain histamines or have a histamine-releasing action (vasoamines) include egg whites, banana, pickled fish, shellfish, tinned tuna, chocolate, wine, cheese, citrus fruits, strawberries and tomatoes. [the jury may be out on cheese - i remember once seeing it referred to as an antihistamine.]
You could always try to take a few anithistamines. If they clear it up then you'll know that histamines were indeed the cause. Natural oral antihistamines include burdock, goldenseal, juniper berry, marshmallow, lobelia, echinacea and parsley root (Bartram's Herbal Encyclopedia, 1995, p308). Licorice can also be used.
The following list also includes supplements which may be of help:
Vitamin C w/bioflavonoidsNatural Antihistamine, adrenal functionup to 5000mg daily, depending on bowel tolerance
Vitamin B5 (pantothenic acid)Adrenal function, defends against stressup to 1000mg, 2 or 3x daily
CoQ10Immune booster, counters histamine60mg, 3 or 4x daily
Vitamin AAnti-infammatory, immune system10,000 IU, 2 or 3x daily
AHCC (Active Hexose Correlated Compound)Immune system booster500mg, once daily
Vitamin B12Reduces inflammatory response1,000 mcg daily in morning
PantethineProduces coenzyme A, stress300 mg 3times daily w/meals
Omega-3 Fatty AcidsReduces allergic reactions1000mg daily
QuercitinHelps neutralize histamineup to 2000mg daily
Vitamin E & seleniumImmune booster400 IU daily & selenium 50 mcg twice daily
Grapeseed extractImmune booster100mg 2x daily
Raw adrenalImmune booster500mg, 2x daily
Magnesiumrelieves bronchospasm400mg, daily
Full spectrum digestive enzyme supplementenhances assimilation & utilization of nutrientswith each meal
make sure you are sleeping well and looking after your health in general so that your immune system can do its job OK. That way, you won't be so easily knocked of course by any one individual food you might eat.