Every morning, just after breakfast, i take 1500 mg of glucosamine (pills form). my habit since i was kid is to go to the bathroom (to move my bowels) 30 mins after breakfast. if i do so glucosamine is ejected from my body and is it not effective?

Not Expelled: Passage of food byproducts or supplements through the gastrointestinal tract takes approximately 4-8 hours. During this time, most of the nutrients and active components are absorbed through the stomach & lining of the intestine and into the bloodstream. Only the byproducts and waste products are expelled in the BM/urine. Glucosamine taken in the morning will not be expelled 30 minutes later.