Sheng Di Huang - Raw Rehmannia- Rehmannia Glutinosa

The unprepared or raw root is Cold in nature vs the prepared root which is Warm in nature.

Used for fevers, thirst, mouth sores, and hemorrhaging.
Lack of Yin fluids with dry mouth, throat pain, afternoon fevers and feelings of Heat, and dry constipation.
Also used in formulas to treat conditions such as diabetes, lupus, rheumatoid arthritis, psoriatic arthritis, diabetes mellitus, and eczema.

Mu Dan Pi - Moutan Peony root bark - Paeonia Suffruticosa

Used in Chinese medicine for gynecological issues, such as amenorrhea, scanty periods, painful periods, muscle spasms, and enhancing blood flow.
Commonly used when there is Heat caused by deficiency such as menopausal hot flashes and night sweats.
Also used for headaches, flank, and eye pain due to Liver Fire.

Oregon Grape root- Berberis repens, Mahonia repens

Liver tonic that stimulates bile flow = increases digestion and absorption by breaking down fats into fatty acids.
Cools the Liver and is often used for toxic Liver issues from alcohol or drugs (hepatitis, jaundice, enlarged Liver).
Antibacterial, antiviral, and antifungal making it useful for IBS, UTIs, yeast infections, acne, rosacea, cysts, dermatitis, styes, strep and staph infections, intestinal viruses, and inflamed gums.
Oregon Grape root and Barberry are often interchanged due to their similarities.