Hemp Seed Classic Formulas … Natural Herb Library

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Moistens dryness and relieves constipation - Ma Zi Ren is the classic formula-facing name for hemp seed in bowel-dryness patterns, especially the 'Pi Yue' constipation tradition.
Softens stool without harsh purging - it is chosen when the treatment strategy needs lubrication plus gentle movement rather than drastic draining.
Supports deficiency-pattern constipation - classical use particularly fits patients who are dry, depleted, postpartum, or elderly rather than robust excess cases.

Ma Zi Ren Wan - the canonical Shang Han Lun formula for Pi Yue constipation built around hemp seed lubrication, Bai Shao nourishment, and mild downward movement.
Run Chang Wan-style moistening combinations - later traditions using Ma Zi Ren when dryness, weak fluids, and difficult stool coexist.
Post-illness and postpartum bowel formulas - hemp seed paired with qi-supportive or blood-restoring herbs so that bowel movement is restored without injury to the patient.

Classical formula teaching preserves Ma Zi Ren as the signature moistening seed for dry-bound constipation, especially in the Ma Zi Ren Wan lineage.
The same official modern Chinese herb references that describe Huo Ma Ren also reinforce the seed's role in elderly, postpartum, and deficiency-dryness constipation.