What to watch with CYP1A2 and Allergie?

CYP1A2 is primarily involved in metabolizing caffeine and certain drugs (e.g., theophylline, clozapine). A direct link to allergies is not well established. Variants in CYP1A2 affect caffeine metabolism: 'slow metabolizers' may experience prolonged caffeine effects, which could mimic or exacerbate allergy-like symptoms such as palpitations or jitteriness. Theoretically, metabolism of some antihistamines could be altered, but robust human data are lacking. There is no proven effect on IgE levels or allergic reactions. Caution: DTC genetic tests often overstate single SNP effects. If you have allergies, do not rely solely on CYP1A2 results. For medications like antihistamines or asthma inhalers, consult a physician. Evidence: mechanistic and some association studies, but no strong clinical data for allergies.