Dr. Clark Store remains the ORIGINAL manufacturer of Dr. Hulda Clark’s products. We started out as Self Health Resource Center (SHRC) in 1993. Founded by Dr. Clark’s son Geoff Clark, SHRC was meticulously designed to follow Dr. Clark’s strict production methods for supplements without flow agents, investing in specialized equipment to do so. Although SHRC changed names to Dr. Clark Store, we still follow Dr. Clark’s strict manufacturing and testing protocols to make the purest supplements possible.