The beginning words in a Chinese formula usually signify the primary ingredients, or recipe, of the formula. The end of Chinese formulas typically signify the format (i.e. pill, powder, tablet, etc.).  The following terms are a general guideline to the various formats we sell:PIAN - Tablet (flat pill similar to many vitamins)WAN - Pill (round, waxy dark pill; teapill)TANG - Water Decoction (boiled whole herbs; may be concentrated)SAN - Herbal Powder (milled or granulated)SHUI - Tincture (extracted with alcohol or other solvent)GAO - Paste (topical or plaster)