What is the correct way to eat soapberry spines?

Soapberry internal use into the decoction or into the pill, powder, external use of vinegar steamed juice coated with the affected area.
Soapberry for the legume soap pods dry spines. Pungent flavor, warm nature. Attributed to the liver, stomach meridian. It has the efficacy of subduing swelling and toxin, searching for wind, draining pus, and killing insects.
Soapberry can be used for the treatment of carbuncle (is a kind of poisonous sores, occurring on the surface of the body, limbs, internal organs of the acute purulent disease) or pus into not ulcerated, scrofula (mainly refers to the cervical lymph nodes tuberculosis), sores and rashes, ringworm, postpartum lack of breast milk, fetus clothes, etc.; external treatment of scabies and leprosy.
Carbuncle has been ulcerated and pregnant women are forbidden to use Soapwort. It is recommended that patients take soapberry under the guidance of a doctor, do not take on their own, so as not to delay the condition.