We initially tried Muscle Up to support our leggy Freisan (5YO) during his gangly stage, which has been going on forever! Currently standing at 16HH++ on the way to 17HH, its supporting muscle development where required and reducing his "angularity". Now he's entering into his education; and has new demands being placed on his physicality, Muscle Up helps his post lesson/work recovery.
We're impressed with the results and recommend it, along with the tother GH products we use.
We don't use MU on our Cob as hes already hench and I don't want him extra hench.
We use it in combination with Globavite; the Herbal Electrolyte mix and a chaff for barefoot horses.