铁扇子 桑 桑叶滋 桑油
百草镜∶桑老则树生瘿，其壮如瘤，用刀斫下，阴干入药。
去风痹诸湿，浸酒用，治胃痛。（百草镜）
百草镜∶桑叶采过二桑者勿用，只采过头叶，其二叶力全，至大雪后，犹青于枝上，或
黄枯
于枝上，皆可用。须经大雪压过，次日雪晴采下，线穿悬户阴干，其色多青黑色，风吹作铁
气声，故名铁扇子。冬至后采者良。
治肠风目疾，咳嗽盗汗。（百草镜） 洗一切天行时眼，风热肿痛，目涩眩赤，取铁扇
子二张
，用无油茶碗一只，要有盖者，置铁扇子于中，以滚水冲半盏盖好，候汤温，其色黄绿如浓
茶样，为出味，然后洗眼拭干，隔一、二时再以药汁碗隔水顿热，再洗，每日洗三、五次即
愈。此水一盏可洗三、四十人。（养素园验方）
中年眼目昏花眼科要览复明散∶用经霜雪桑叶，叶须腊月在树不落者，同甘菊、侧柏叶、
荆
芥穗、桑白皮，如有眵泪加艾叶、苍术，发痒加赤芍、川椒、为粗末，等分和匀，煎汤熏洗
，惟红肿者不可洗。
风眼下泪不药良方∶腊月不落桑叶，煎汤，日日温洗之，或加入芒硝少许。
铁扇子 桑树瘿瘤 桑叶滋 桑油
《百草镜》记载：桑树年老时树干会生出瘿瘤，其形状壮实如肿瘤，用刀砍下后，阴干即可入药。
能祛除风痹及各类湿邪，浸泡酒中饮用，可治疗胃痛。（出自《百草镜》）
《百草镜》记载：采摘过两茬的桑叶不要使用，只采摘头茬叶，因为第二茬叶药效不全。直到大雪节气后，叶子有的仍青翠挂在枝头，有的枯黄挂在枝头，都可以使用。必须经过大雪压过，次日雪停晴天时采摘下来，用线串起悬挂在屋檐下阴干，其颜色多呈青黑色，风吹时发出类似铁器的声音，所以名叫“铁扇子”。冬至后采摘的效果最好。
能治疗肠风（便血）、眼疾、咳嗽和盗汗。（出自《百草镜》）清洗各种流行性时行眼病、风热引起的红肿疼痛、眼睛干涩眩晕发红，取两张铁扇子，用一个有盖子的无油茶碗，将铁扇子放入碗中，用滚水冲入半碗，盖好盖子，待水温适宜时，汤色呈黄绿色如浓茶样，即为出味，然后用来洗眼并擦干。间隔一两个时辰后，再将盛药汁的碗隔水加热，再次清洗，每天洗三到五次即可痊愈。这一碗水可以洗三四十人。（出自《养素园验方》）
中年眼目昏花，《眼科要览·复明散》：使用经霜雪后的桑叶，必须是腊月里在树上未落下的，与甘菊、侧柏叶、荆芥穗、桑白皮一起使用，如果有眼屎眼泪则加入艾叶、苍术，如果发痒则加入赤芍、川椒，研成粗末，等分混合均匀，煎汤熏洗，只有红肿者不可清洗。
风眼下泪不药良方：腊月里未落下的桑叶，煎汤，每天温热清洗，或者加入少许芒硝。
这是多年的老桑树，多次被修剪嫩枝，其枝头长成拳头大小的是这种药材。
治疗膈症（胸膈部病症），《梁侯瀛集验方》：用老桑树瘿瘤烧红存性，研为粉末，用好酒送服即愈。
Iron Fan (Tie Shan Zi) Mulberry Galls, Mulberry Leaf Nourishment, Mulberry Oil
*Baicao Jing* records: When mulberry trees grow old, galls form on the trunk. These are robust and tumor-like in appearance. They should be chopped off with a knife, dried in the shade, and then used as medicine.
It dispels wind-dampness and bi-syndrome, and can be soaked in wine for consumption to treat stomach pain. (*Baicao Jing*)
*Baicao Jing* records: Do not use mulberry leaves that have been harvested twice; only harvest the first flush of leaves, as the second flush lacks full efficacy. Even after the Great Snow solar term, leaves may remain green on the branches or turn yellow and withered but still hang on the branches; both are usable. The leaves must be exposed to heavy snow, and harvested the next day when the weather clears. They should be strung together and hung under eaves to dry in the shade. Their color becomes mostly dark green-black, and they produce an iron-like sound when blown by the wind, hence the name "Iron Fan." Leaves harvested after the Winter Solstice are superior.
They treat intestinal wind (hematochezia), eye diseases, cough, and night sweats. (*Baicao Jing*) To wash various epidemic eye conditions, swelling and pain due to wind-heat, dry and blurry eyes with redness, take two sheets of Iron Fan, place them in a clean, oil-free tea bowl with a lid. Pour half a bowl of boiling water over them, cover well, and wait until the liquid is warm. When the color turns yellow-green like strong tea, indicating the essence has been extracted, use it to wash the eyes and wipe dry. After one or two *shichen* (2–4 hours), reheat the bowl containing the medicinal liquid in hot water and wash again. Wash three to five times daily until cured. One bowl of this water can be used for thirty to forty people. (*Yangsu Yuan Yan Fang*)
For middle-aged blurred vision, *Fuming San* from *Ophthalmology Essentials*: Use mulberry leaves that have endured frost and snow, specifically those that remained on the tree in the twelfth lunar month. Combine them with Chrysanthemum Morifolium Flower (*Gan Ju*), Biota Orientalis Leaf (*Ce Bai Ye*), Schizonepeta Spike (*Jing Jie Sui*), and Mulberry Root Bark (*Sang Bai Pi*). If there is ocular discharge or tearing, add Mugwort Leaf (*Ai Ye*) and Atractylodes Rhizome (*Cang Zhu*). If itching occurs, add Red Peony Root (*Chi Shao*) and Sichuan Pepper (*Chuan Jiao*). Grind into coarse powder, mix equally, decoct in water, and use for fumigation and washing. Note: Do not wash if there is severe redness and swelling.
Excellent Prescription for Wind-Induced Tearing Without Medication: Decoct mulberry leaves that did not fall in the twelfth lunar month. Wash daily with the warm liquid, or add a small amount of Mirabilite (*Mang Xiao*).
This refers to the gall formed on multi-year-old mulberry trees that have been repeatedly pruned of tender shoots; the growth at the branch tip resembles a fist.
To treat diaphragmatic syndrome (conditions affecting the chest/diaphragm), *Liang Hou Ying Ji Yan Fang*: Burn the old mulberry gall until red-hot but retain its nature (charred but not ashed), grind into powder, and swallow with good wine for immediate cure.