Can Glucosamine cause vomiting on 81 yr old male ( my Dad) with a gastric feeding tube? He had used it for 15 yrs, but stop for 4 months when he had gastric feeding tube placed, and started back taking it and after a week he started vomiting, but before he started taking it ,the tube had been slowly sinking in the stomach for a week, and a week and a half later that's when he started taking the glucosamine and a week after the tube was sucked in completely , and vomiting started then doctors blamed it to glucosamine. This sounded ridiculous, which you had informed me last week it seems it was malpractice, which I completely agree and suggested Endoscopy ASAP, unfortunately these incompetent doctors waited 5 days, while my poor father's body weaken by the minute, without food, only IV , so when they finally attempted the procedure they had to stop because my Dad vital signs dropped dangerously and a few hours later he died. One of my sisters beleive this so call doctors and now blame me since I was the one who brought the supplement to him after being told by my Dad wife ( his 24-7 so call caregiver .....? )that she had consulted with his doctor and he had approved the glucosamine. I need to find peace making sense of all this. Thanks you for taking the time to answer my questions.