For myself I was blessed to have Colvita Collagen (only collagen in the world that has active live cells) and. Olway Vit. C (same company), and when I did tske the Vit. C I drank string lemon and water during my treatments of Colvita Collagen.
Plus for my heart damage w/extreme high blood pressure. Heart palpitations and arthmyia attack what helped was Innovite Health Formula HH, which I took for only 3 months and with my treatments of Colvita. Now my physical heart damage is healed, normal blood pressure... that I healed. But I sustained well over 30 serious damages to my body... not everything was Collagen damage. Best thing about these treatments I did, there have not been any allergic reactions since it came to Canada abd USA in 2003. Because other supplements and herbs can be dangerous for some Floxies... we are all different - what works for one floxie may cause even further serious damage. If a supplement after through research on bad reactions are not found then it is safe to see if it will help you.