Given the positive correlation between diabetes and histamine intolerance (ref), stabilizing sugar levels should be of high priority in those with histamine symptoms
Cheeseman KH, Slater TF
Monoaminergic control of episodic growth hormone secretion in the rat: effects of reserpine, alpha-methyl-p-tyrosine, p-chlorophenylalanine, and haloperidol
Nausea (most common, especially during first 1 to 2 weeks of a new dose) Diarrhea or, just as often, constipation Vomiting (less common but more likely at 9 to 12 mg) Reduced appetite, food noise quieting down (this is the goal, not a side effect) Skin sensitivity (dysesthesia): tingling, prickly feeling, or sunburn-like skin
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[5] [6] The unusual gamma amide linkage in glutathione protects it from hydrolysis by peptidases