A 2014 study indicates that glucosamine supplements aren’t likely to work well if you’re deficient in the trace mineral boron.By now, lots of studies have verified the ability of glucosamine supplements to relieve the pain of osteoarthritis (OA), often better than over-the-counter anti-inflammatory pain relievers (although it takes longer for glucosamine’s effects to fully kick in). And unlike these drugs, glucosamine, a natural molecule found in most body tissues, can be taken safely long-term. Also unlike drugs, glucosamine goes way beyond symptom relief: It’s been shown to inhibit joint deterioration and to stimulate and support joint healing and repair. There’s only one problem. Glucosamine supplements don’t always work. This leads many people to give up on them and go back to pain-relieving drugs that provide more reliable relief.Why don’t they work?Well first, there are vast differences in glucosamine quality. Glucosamine is an expensive ingredient, and its popularity has prompte…