Black beans are flat and sweet; Spleen and kidney meridian; Has the effects of relieving swelling, moistening lung, clearing away heat, promoting blood circulation, promoting diuresis, expelling pathogenic wind, nourishing blood, tranquilizing mind, improving eyesight, invigorating spleen, tonifying kidney, nourishing yin, and removing toxic substances.

Sinomenine is alkaline, flat, bitter and pungent; Liver and spleen meridians; Has the functions of expelling wind, removing dampness, dredging collaterals and diuresis;

Astragalus is slightly warm and sweet; Entering lung, spleen, liver and kidney meridians; It has the effects of invigorating qi, consolidating exterior, stopping sweating, promoting granulation, promoting diuresis and reducing swelling.

The compatibility of the three herbs has the functions of benefiting qi and tonifying kidney, promoting diuresis and eliminating dampness, and can be used for rheumatoid arthritis, joint swelling and pain, etc.