Prime Original doesn’t contain a MOS & FOS prebiotic as it is intended for horses and ponies that are in light-medium work, being spelled or those that simply need to gain weight which the live yeast probiotic and nucleotides combination helps to encourage. The live yeast probiotic in Prime Original helps to settle the gut by promoting the beneficial bacteria and improving fibre digestion, but if a horse/pony had a specific digestive upset/had been on antibiotics then I would recommend feeding Platinum Pro to start with then swapping on to Prime Original.
In general terms, a horse that is being fed Prime Original doesn’t have the requirement for a prebiotic due to its lighter workload and potentially less stressful life circumstances, whereas a harder working/older horse does – hence the reason we would feed them Platinum Pro.
