Support your immune system* with RD Naturals™ elderberry syrup, elderberry drops and elderberry gummies. RD Naturals™ is a Charleston, SC based company founded by Sara Gail, a registered dietitian. Our elderberry formulas have been developed and perfected using only the highest quality organic and wildcrafted ingredients. RD Naturals™ elderberry products are inspired by evidence-based science, lab-tested, and formulated to provide immune support. The RD Naturals™ product line includes our unique elderberry syrup, drops, and gummies.