In general, the composition of the metabolism booster and the winter mixture is different, but the effect of both is very holistic and both support the coat change very well. The amino acids that are important for muscle metabolism can be found in the booster in hemp and in the winter mixture in the algae. Both mixtures contain the super important vital substances magnesium and zinc. However, the herbal composition is different. While the nettle from the booster also helps with detoxification and the skin. Are there herbs, spices and roots in the winter mixture that are good for digestion, internal warmth, the mucous membranes and lungs and also the joints. Here the effect is different and so you can then consider whether you would rather Another kilo of winter starch (especially in cold temperatures, old or weak horses or horses with arthrosis or cold problems) or whether you then switch to the metabolism booster. Both are great products that help holistically! And yes, please always feed them to change the horse slowly. Thank you.