Hemp Seed Classic Formulas … Natural Herb Library

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Moistens the intestines and unblocks the bowels - Huo Ma Ren is the classic oily seed for constipation from blood deficiency, fluid depletion, aging, or postpartum dryness.
Nourishes while it lubricates - unlike harsh purgatives, it is preferred when the patient is weak, elderly, postpartum, or otherwise not suited to aggressive draining.
Functions as both medicine and food material - the seed sits in the food-medicine overlap and can be incorporated into gentler long-view bowel-support strategies.

Ma Zi Ren Wan lineage - the best-known classical constipation formula built around hemp seed lubrication.
Postpartum Ma Ren pills with Ren Shen and Zhi Ke - traditional approach when blood loss and dryness leave the bowels difficult to move.
Gruel or paste combinations with Su Zi, pine nuts, or sesame - gentler moistening strategy for elderly or debilitated constipation.

The official Chinese medical reference platform describes Huo Ma Ren as sweet and neutral, entering the Spleen, Stomach, and Large Intestine to moisten the intestines and relieve constipation.
Traditional application especially emphasizes older adults, postpartum patients, and other deficiency-dryness cases where strong purgation would be too harsh.