Has anyone ever used the Cool Calories supplement to help a horse gain weight?

My 35 year old gelding is healthy other than needing to gain some weight (he always drops weight in the spring when he sheds his winter coat). His teeth are fine and he's regularly dewormed. He gets as much good grass hay as he wants and is fed close to the maximum of Superior Senior feed each day.

He's been on the supplement for about two weeks now and I've been tapering him up towards the maximum dose. We're about a third of the way there. I was just wondering how long it would be before we start to see results.