For more than thirty years, Allergy Research Group® has been known for the highest quality, most hypoallergenic, and most cutting-edge nutritional supplements available. Physicians and healthcare practitioners around the world depend on ARG for their patients’ nutritional support. Originating with the ground-breaking oxidant/antioxidant work of Stephen Levine, Ph.D., Allergy Research Group was one of the first to introduce truly hypoallergenic products to the market.