Hi Karen,
Hi Karen,
My first choice would have been XCHT, too, especially if the diarrhea was colitis in nature. If an animal is Yin deficient, though, it can be aggravated by XCHT use. The BL 23 and weak pulse suggests the animal might be Kidney Yin deficient.
If on the other hand, he acts cold and you're sure he is Spleen Qi or Kidney Qi and Yang deficient, a better formula might be Chai Hu Gui Zhi Gan Jiang Tang (CHGZGJT). It will warm the GI and Kidneys and might address the neck as well.
If you feel he is more dry and Yin deficient, the best Yin tonic to use depends on the situation. For vomiting, Yi Guan Jian is probably the best choice. For neck tightness and muscle spasms, Bu Gan Tang is better. For generic Blood and Yin tonification, Si Wu Tang. For colitis and thirst, maybe Zhi Bai Di Huang Wan. You can add Huang Lian (Coptis) to YGJ to give it more effects against colitis and thirst.
One of these suggestions should help. If you try CHGZGJT and he gets worse, then he is probably Yin or Blood deficient
Steve