Has anyone ever taken collagen?

ive been doing it since sept, my calcium level was high and i have osteopenia and got an article on my email about how collagen helps with it so i started taking it, when i did some bloodwork recently for my kidney doctor my calcium level is back to normal, they were checking my neck at a lifeline screening and it showed i had no blockages, cant wait to get my cholesterol checked when i see my doctor in 2 wks, i heard it brings that down, my bones dont hurt as much, theyre healing up, i heard collagen makes new bones, my eczema is going away, ive lost weight, not as tired anymore or have headaches all the time like i used to, i heard its good for heart and arteries, ive only been on it since sept but i wondered if anyone else had an experience with it like i have.