I bought this about 6 weeks ago and can seriously tell the difference. I have fibromyalgia and have lots of joint and muscle pain and weakness, since starting this both have greatly improved. This is the first reviews I have ever written.

I use the unflavored callogen in my morning coffee. It mixes quickly with a stir. The product is good but lacks the creamy texture of the more expensive brand.

Loving the results: shinier hair and stronger nails. Also, the added protein is great for tiding me over longer between meals. I add this to my coffee and smoothies!

I saw a huge improvement in mobility after a month of daily use! I was so impressed I bought some for several people in my family! The fact that my nails and hair have grown and strengthened in the process was just a bonus!!

Love the product and how my nails are stronger. Bought a new container today and HATE the new cardboard container. It did not pull up according to the instructions. By the time I got it opened the top could not be resealed. Very poor design.

I love this product. It blends completely in any drink I put it in. I have purchased twice and will purchase again soon. I can’t wait to try the coffee creamer.

I purchased this to mix in my water everyday, and it does not mix. It turns glue like and does not dissolve. I was so excited about this product, i wish it would dissolve.

I have been purchasing this for 2 years! It's easy to use, dissolves perfectly in my coffee and helps my joints feel less stiff, my nails grow better, and overall I feel better when I use it regularly!

Hate the new container! Husband and I are in our late 70's. Very painful to open. Thank goodness I save the old container. If you want us to continue buying I suggest you make it easy for us to use!!!

Idk maybe I’m just in my head BUT I feel my skin looks more youthful when I’m on top of my collagen and my bad knee of an ACL reconstruction seems to move smooth.