脾土不胜，不思饮食，由此血衰，故月水往后，或次月饮食多进，月水又往前矣。治宜理脾，脾旺则血匀
气顺，自然应期，宜用紫金丸。
紫金丸
青皮 陈皮（各五钱） 苍术 槟榔 砂仁 红豆（各六钱） 良姜 乌药 香附（各八钱） 三棱（一两）
蓬术（二两） 枳壳（八钱）
共为末，粳米糊为丸，食后米汤下百丸。一方无苍术、蓬术、香附。
经来或前或后，名曰愆期。此由脾胃虚弱，冲任损伤，气血不足。宜服加减八物汤，兼服调经乌鸡丸。
加减八物汤
人参（三钱） 白术 茯苓 甘草（各五钱，炙） 白芍 当归身 陈皮 香附 牡丹皮（各一钱）
水煎食前服。
调经乌鸡丸
白毛乌骨未炖雄鸡一只，约重一斤。以糯米喂养七日，勿令食虫蚁，以绳缢死，干 其毛，去肚内杂脏不
用。纳生
地黄，熟地黄、天门冬，麦门冬各二两于鸡肚内。以好酒十碗，文火煮烂，取出肚内药，将鸡连骨用桑柴火焙
干，仍以前煮过生地黄等药酒，又浸又焙，至鸡骨肉枯为度，研极细末。再用人参五钱，肉苁蓉（酒洗净）、
破故纸（炒）、砂仁、当归身、白术、川芎、丹参、茯苓、甘草（炙）、杜仲（盐水炒）各一两，香附米（醋
制）四两。共为细末，入鸡骨绞肉和匀，酒面糊丸，空心米汤下五十丸。
脾土功能虚弱，导致食欲不振，进而引起血液亏虚，所以月经周期延后；如果下个月饮食摄入增多，气血得以补充，月经周期又会提前。治疗应当调理脾胃，脾胃强健则气血调和、气机顺畅，月经自然能按时来潮，适宜使用紫金丸。
紫金丸
青皮、陈皮（各五钱），苍术、槟榔、砂仁、红豆（各六钱），良姜、乌药、香附（各八钱），三棱（一两），蓬术（二两），枳壳（八钱）。
以上药物共研为细末，用粳米煮的糊作为粘合剂制成丸药，饭后用米汤送服一百丸。另一种配方中没有苍术、蓬术和香附。
月经来潮时间或提前或推后，称为“愆期”（月经周期紊乱）。这是由于脾胃虚弱，冲脉和任脉受损，导致气血不足。适宜服用加减八物汤，并配合服用调经乌鸡丸。
加减八物汤
人参（三钱），白术、茯苓、甘草（各五钱，经蜜炙处理），白芍、当归身、陈皮、香附、牡丹皮（各一钱）。
加水煎煮，饭前服用。
调经乌鸡丸
选取一只白色毛发的乌骨未产蛋母鸡，重量约一斤。用糯米喂养七天，不要让它吃虫蚁，用绳子勒死它，晾干羽毛，去除肚子里不需要的内脏杂物。将生地黄、熟地黄、天门冬、麦门冬各二两放入鸡肚内。用好酒十碗，用小火慢慢煮烂，取出肚内的药材，将鸡连同骨头用桑树枝火焙干，再用之前煮过生地黄等药材的酒浸泡并再次焙干，直到鸡的骨肉干枯为止，研磨成极细的粉末。再加入人参五钱，肉苁蓉（用酒洗净）、破故纸（炒制）、砂仁、当归身、白术、川芎、丹参、茯苓、甘草（蜜炙）、杜仲（盐水炒）各一两，香附米（醋制）四两。以上药物共研为细末，加入鸡骨绞碎的鸡肉混合均匀，用酒和面糊制成丸药，空腹时用米汤送服五十丸。
If the Spleen Earth is unable to function properly, appetite will be lost. Consequently, Blood becomes deficient, causing the menstrual flow to be delayed. If in the following month food intake increases significantly, the menstrual flow may then occur earlier. Treatment should focus on regulating the Spleen; when the Spleen is robust, Blood will be balanced and Qi will flow smoothly, allowing menstruation to occur naturally at the proper time. The recommended formula is Zijin Wan (Purple Gold Pill).
Zijin Wan (Purple Gold Pill)
Qingpi (Exocarpium Citri Reticulatae Viride), Chenpi (Pericarpium Citri Reticulatae) [each 5 qian]; Cangzhu (Rhizoma Atractylodis Lanceae), Binglang (Areca Seed), Sharen (Fructus Amomi Rotundus), Hongdou (Adzuki Bean) [each 6 qian]; Liangjiang (Rhizoma Alpiniae Officinarum), Wuyao (Radix Linderae), Xiangfu (Rhizoma Cyperi Rotundi) [each 8 qian]; Sanleng (Rhizoma Sparganii) [1 liang]; Pengzhu (Rhizoma Curcumae Longae) [2 liang]; Zhiqiao (Fructus Aurantii) [8 qian].
Grind all ingredients into fine powder. Form pills using a paste made from glutinous rice. Take 100 pills after meals with rice soup. An alternative prescription excludes Cangzhu, Pengzhu, and Xiangfu.
When menstruation occurs either earlier or later than expected, it is termed "Qianqi" (Delayed or Irregular Menstrual Cycle). This condition arises from deficiency of the Spleen and Stomach, injury to the Chong and Ren vessels, and insufficiency of Qi and Blood. It is advisable to take Jiajian Bawu Tang (Modified Eight-Treasure Decoction) and concurrently administer Tiaojing Wuji Wan (Regulating Menstruation Black-Bone Chicken Pill).
Jiajian Bawu Tang (Modified Eight-Treasure Decoction)
Renshen (Radix Ginseng) [3 qian]; Baizhu (Rhizoma Atractylodis Macrocephalae), Fuling (Poria), Gancao (Radix Glycyrrhizae Uralensis) [each 5 qian, honey-fried]; Baishao (Radix Paeoniae Alba), Dangguishen (Radix Angelicae Sinensis - root body), Chenpi (Pericarpium Citri Reticulatae), Xiangfu (Rhizoma Cyperi Rotundi), Mudanpi (Cortex Moutan) [each 1 qian].
Decoct in water and take before meals.
Tiaojing Wuji Wan (Regulating Menstruation Black-Bone Chicken Pill)
Take one white-feathered, black-boned, un-laying hen, weighing approximately 1 jin (approx. 500g). Feed it with glutinous rice for seven days, ensuring it does not consume insects or ants. Strangle it with a rope, dry its feathers, and remove internal organs that are not needed. Place 2 liang each of Shengdihuang (Radix Rehmanniae Praeparata? Note: Text says Sheng Dihuang but context implies processed or raw, usually Raw for cooling/nourishing Yin in this complex prep, but standard is Shu Dihuang for tonifying. Text lists both: Sheng Dihuang, Shu Dihuang, Tiandong (Herba Asparagi), Maidong (Radix Ophiopogonis)) into the chicken's cavity. Simmer in 10 bowls of good wine over low heat until tender. Remove the medicinal herbs from the cavity. Roast the chicken (including bones) over mulberry wood fire until dry. Soak the roasted chicken in the wine used for boiling the herbs, then roast again. Repeat the soak-and-roast process until the chicken bones and flesh are completely dried. Grind into an extremely fine powder. Then add Renshen (Radix Ginseng) [5 qian], Rongshurong (Herba Cistanches) [washed with wine], Poguzhi (Fructus Psoraleae) [stir-fried], Sharen (Fructus Amomi Rotundus), Dangguishen (Radix Angelicae Sinensis - root body), Baizhu (Rhizoma Atractylodis Macrocephalae), Chuanxiong (Rhizoma Chuanxiong), Danshen (Radix Salviae Miltiorrhizae), Fuling (Poria), Gancao (Radix Glycyrrhizae Uralensis) [honey-fried], Duzhong (Cortex Eucommiae) [stir-fried with salt water] [each 1 liang], and Xiangfum (Rhizoma Cyperi Rotundi - vinegar-processed) [4 liang]. Grind all into a fine powder. Mix thoroughly with the minced chicken meat and bone powder. Form pills using a paste of wine and flour. Take 50 pills on an empty stomach with rice soup.