Fairy grass is also called Liang Fan Cao, the difference between Liang Fan Cao and tortoise jelly lies in the category of Chinese medicine, efficacy and effect.
The category is different: Liang Fan Cao is a traditional Chinese medicine; tortoise jelly is a proprietary Chinese medicine.
Difference in efficacy: cold vermicelli has the efficacy of clearing heat and removing heat toxins; tortoise jelly has the efficacy of nourishing yin and moistening dryness (nourishing yin essence and removing heat), lowering fire and removing vexation, clearing dampness and heat and cooling the blood to remove toxins. It can nourish yin and moisten dryness, lower fire and remove vexation, clear dampness and heat, cool blood and detoxify.
Differences in action: cold powder herb is used for treating sunstroke, poisoning, thirst, muscle pain, joint pain; tortoise jelly is used for deficiency fire and irritability, constipation with deficiency of fluid, red and white leucorrhoea (abnormal leucorrhoea with blood or blood clots), boils, swollen sores and ulcers, etc..
The adverse reactions and contraindications of both are not yet clear.
Chinese medicines or proprietary Chinese medicines need to be used under the guidance of a Chinese doctor to identify the symptoms, and individuals should not use them blindly to avoid adverse consequences.