Wondering if others and win can comment on the difference of Purinas WellSolve L/S and Renew Gold for overweight horses. 

I would like to know also.

I feed RG and have to watch it making my horses plump even on the one pound. RG increases gut efficiency so they absorb everything. LOL 

One of mine is very plump on about pound and half of RG. Get fed limited grass hay. 

These are two very different products. Well Solve is a alfalfa and beet pulp based low calorie feed. When alfalfa is the first ingredient, like it is used there, it amounts to very expensive hay. Renew Gold is much more energy dense, and uses coconut to function as anti inflammatory support in addition to Omega3 from Flax. If alfalfa is important in the program, we prefer to see it fed as hay or cubes. 
win

Thanks so much for this info!! 

You are welcome. We just did a upgrade to Renew Gold. We have increased the protein from 15% to 16%, and increased the natural vegetable fat from 15% to 17%. This makes a more energy dense product that follows our plan to support the roughage part of the diet with the smallest, least disruptive, amount of added feed.