Having been in the Pharma markets for nearly 1/2 century, I feel like I know a little about "the medical/health business" !! I've been in this store to purchase items, and today I wanted to check on availability of electrolytes. JOHN listened & we discussed the aspects of the subject, & then I ask him to recommend a product. WE also discussed the aspects of antibiotic therapy, & the effects thereof, since I have a surgical implant, requiring frequent antibiotic prophylaxis. JOHN, is now a "Healthcare Professions" resource for me, as he has a through knowledge of meds & supplements, and recommends only after I enlist his help.