Dietary Supplement (Beta-Glucans) in Allergic Patients Undergoing Subcutaneous Immunotherapy.

Inclusion Criteria: * Age between 18 and 65 years. * Both sexes. * Patients diagnosed with allergic rhinitis or allergic rhinoconjunctivitis, with or without allergic asthma due to sensitization to aeroallergens, undergoing treatment with subcutaneous polymerized 100 immunotherapy, initiating treatment with rapid dosing. * Normoglycemia (fasting glucose ≤ 100 mg/dL). * BMI between 18.5-29.9 kg/m². Exclusion Criteria: * Refusal to sign the informed consent. * Outside the age range specified for the study. * Presence of intolerance or hypersensitivity to selenium or zinc, or to any of the components of the dietary supplement individually. * Participation in a clinical trial within the past two months, or currently participating in another study. * Personal history of liver or kidney disease. * Excessive alcohol consumption (\> 20 grams/day) or use of substance abuse. * Any condition that, in the opinion of the investigators, renders the subject unable to participate in the study.