Flowering Quince Fruit Classic Formulas

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Relaxes the sinews and unblocks the channels - Mu Gua is classically used for cramped calves, tendon tightness, weakness in the legs, and wind-damp painful obstruction affecting mobility.
Transforms dampness and harmonizes the middle - it is chosen when damp turbidity causes abdominal fullness, diarrhea, or a heavy constrained feeling after food stagnation or summer dampness.
Harmonizes the Stomach and stops vomiting - sour-warm Mu Gua can help redirect rebellious Stomach qi downward when nausea or vomiting is linked to dampness and constraint.
Reduces edema and supports movement of fluids - traditional practice also uses it for swelling in the legs or feet when dampness and qi stagnation coexist.

Mu Gua Wan - classical formula lineage using Mu Gua for lower-limb weakness, cramping, and wind-damp pain with underlying deficiency.
Traditional pain and stiffness formulas pair Mu Gua with Niu Xi, Ba Ji Tian, or Rou Gui when tendon spasm and heavy aching are prominent.
Digestive formulas may combine Mu Gua with Huo Xiang, Chen Pi, or Sha Ren when dampness and rebellious Stomach qi produce nausea and fullness.

TCMWiki describes Mu Gua as sour and warm, emphasizing its ability to soothe tendons, activate the channels, transform dampness, and support treatment of edema and digestive disruption.
Me and Qi classifies Mu Gua among wind-damp-dispelling herbs while also highlighting its useful stomach-harmonizing role.