时珍曰∶苏东坡《良方》云∶鹿阳兽，见阴而角解；麋阴兽，见阳而角解。故补阳
以鹿角为胜，补阴以麋角为胜。其不同如此，但云鹿胜麋，麋胜鹿，疏矣。按此说与沈存中
“鹿茸利补阴，麋茸利补阳”之说相反。以理
【附方】旧三，新五。
异类有情丸∶《韩氏医通》云∶此方自制者。凡丈夫中年觉衰，便可服饵。盖鹿乃纯阳，
龟、虎属阴，血气有情，各从其类，
浸七日，酥炙研）各三两六钱，鹿茸（熏干，酒洗净，酥涂炙，研）、虎胫骨（长流水浸七
日，
蜜涂酥炙）各二两四钱，水火炼蜜，入
九十丸。如浓味善饮者，加猪胆汁一二合，以寓降火之义。
（炒）、牡蛎（ ）各一两，为末，酒糊丸梧桐子大。每盐汤下四十丸。（《普济》）
白胶二两炙为末，酒二升和，温服。（《外台》）
合，分再服。（《外台》）
小便不禁，上热下寒者∶鹿角霜为末，酒糊和，丸梧桐子大。每服三四十丸，空心温酒
下。
Li Shizhen stated: Su Dongpo, in his *Liang Fang* (Good Prescriptions), recorded that the deer is a Yang animal, shedding its antlers when exposed to Yin; the elk is a Yin animal, shedding its antlers when exposed to Yang. Therefore, for tonifying Yang, deer antler is superior; for tonifying Yin, elk antler is superior. Their differences are so distinct that merely stating "deer is better than elk" or "elk is better than deer" is superficial. According to this reasoning, it contradicts Shen Kuo's (courtesy name Cunzhong) assertion that "Deer Antler Velvet (*Ruxi Lu*, 鹿茸) is beneficial for tonifying Yin, while Elk Antler Velvet (*Ruxi Mi*, 麋茸) is beneficial for tonifying Yang." From a theoretical perspective...
[Attached Prescriptions] Three old prescriptions, five new prescriptions.
Yilei Youqing Wan (Pill of Different Species with Affinity): *Han Shi Yi Tong* (Han's Medical Communications) records: This prescription was self-formulated. Whenever middle-aged men feel their vitality declining, they may take this medicine. Since the deer belongs to pure Yang, and the turtle and tiger belong to Yin, their flesh and blood contain vital essence (*Qi*), each following its own kind. [Ingredients processed by soaking for seven days, roasting with ghee, and grinding]: Each at three taels and six qian. Deer Antler Velvet (*Ruxi Lu*, 鹿茸) (smoke-dried, washed with wine, coated with ghee and roasted, ground), Tiger Tibia Bone (*Hujing Gu*, 虎胫骨) (soaked in running water for seven days, coated with honey and ghee and roasted) each at two taels and four qian. Honey refined using fire and water methods is used to form pills the size of paulownia seeds. Take forty pills per dose, administered with salt water. For those with rich tastes who drink well, add one or two he of pig bile to imply the meaning of descending fire. White Gelatin (*Baijiao*, 白胶) two taels, roasted and ground, mixed with two sheng of wine, taken warm. Taken in two doses. For incontinence of urine accompanied by upper heat and lower cold: Grind Deer Antler Frost (*Lujiaoshuang*, 鹿角霜) into powder, mix with wine paste to form pills the size of paulownia seeds. Take thirty to forty pills per dose, administered with warm wine on an empty stomach.