Purple Perilla Fruit, Perilla Seed Classic Formulas … Natural Herb Library

Primary Actions

Directs rebellious Lung qi downward and stops cough and wheezing ... raw Su Zi is used when phlegm, cold, or weak descent causes noisy breathing, cough, and chest fullness.
Transforms phlegm and eases chest oppression ... it is especially suited to cough or asthma patterns where abundant seed oils help the qi descend and loosen congested phlegm.
Moistens the intestines and unblocks the bowels ... Su Zi helps constipation when dryness or weak downward movement coexists with Lung qi rebellion.

Su Zi Jiang Qi Tang ... hallmark formula for wheezing, copious phlegm, and rebellious Lung qi with underlying deficiency below.
San Zi Yang Qin Tang ... teaching formula that uses seed medicinals, including Su Zi, to descend qi and resolve food-phlegm obstruction.
Run Chang Tang style logic ... oily seeds are used when constipation accompanies deficient fluid movement or poor downward conduction.

Traditional materia medica describes Su Zi as warm and descending, especially for cough, wheeze, and constipation from impaired Lung and Large Intestine movement.
Roasting changes handling and emphasis but not the core herb identity, so raw and prepared perilla-seed pages are related yet not interchangeable.