What is the dosage for glucosamine in an adult lab approximately as a suppliment for a lab 75 lbs. I've read several labels perscribed by vets and they seem to differ. Thanks in advance

I use phytoflex from dogzymes it gives you the exact amount to give for the weight of the dog. I love it, my 13 year old is only in that nothing else and she gets around great!!

I give 1000mg a day.