Many rabbits and guinea pigs are too critical to be fed what is essentially ground pellets or hay.
I have been very happy with Lafeber products. I am particularly pleased with the herbivore product…I often start critical rabbits and guinea pigs on EmerAid Herbivore for 1-2 days, and then transition back to a normal diet. I have seen several cases respond more rapidly than I’d otherwise anticipate with EmerAid, perhaps due to the ease of passage through the pylorus and ease of digestion.
— Simon Starkey, BVSc, PhD, DABVP (Avian Practice)