I have used C-Plus over a number of years & found it to be an excellent product. My first old boy reacted badly to Prascend, when diagnosed with Cushings. I put him on C-plus & was amazed at the reversal of symptoms. Since then, our geriatric Dartmoor pony has been having it for the same reason, & hasn't had an attack of lami since going on it. We've recently added a Connie mare to the herd, she came with a history of lami attacks due to EMS. We immediately started her on C-Plus & 8 weeks in, the farrier found no signs of lami when he shod her. I've used a number of different Feedmark products & can't rate them highly enough, they all do what they say on the tub!