Supplements can differ in effectiveness by brand

by M.E. I have discovered not only that the effectiveness of different supplement brands can vary wildly, but that they can differ from person to person. The first brand of glucosamine sulfate I tried for early arthritis symptoms cleared them up after just a few weeks. It was a “house” brand at a local drugstore chain. Let’s call it Brand A. After a year or two I noticed that the store’s house supplements had all new labels. A nice new look. But a month or so later my arthritis signs were mysteriously returning. Some phone calls determined that the chain had switched suppliers, but the old manufacturer also supplied another chain in my area. After a few weeks back on Brand A I was back in shape. When this retailer…
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