Rehmannia Health Benefits: Strengthens Kidneys, Adrenals, Blood

Rehmannia Flower (Radix Rehmanniae). Photo courtesy of Wikipedia.

Rehmannia (Radix Rehmanniae)  is considered a blood and yin tonic in Traditional Chinese Medicine. Rehmannia health benefits include strengthening the kidneys, strengthening the adrenal glands, and tonifying the blood.

Many of the herbal formulas used here at Natchez Trace Veterinary Services contain Rehmannia as one of the main ingredients, so we thought you may be interested in the history, use, and effects of this amazing herb.

One of the Traditional Chinese Medicine Rehmannia blends used in our clinic is Rehmannia Assist Kidney. In Traditional Chinese Theory, kidney failure and kidney meridian dysfunction are a direct result of an imbalance of yin and yang. Rehmannia Assist Kidney helps re-balance the yin and yang with its cooling herbs that nourish and tonify the kidney and it’s yin (fluids), bringing the kidney back to its best functioning condition.

Rehmannia Root (Radix Rehmanniae). Photo courtesy of

In Chinese medical theory, the kidney is considered the flame of life.  Weakness in the lower back, legs (hind legs in animals) and hearing loss are commonly seen when there is a kidney imbalance. In Chinese theory, the lower back is considered “the lumbar mansion” of the kidneys. The kidneys are responsible for nourishing the bones and marrow. If the kidneys are depleted by chronic stress, imbalance, or age the lower back and legs will become weak from lack of nourishment. The ears are also nourished by the kidneys. If the kidney yin is weak then hearing will also be diminished.

Rehmannia Health Benefits in Traditional Chinese Medicine

The roots are the part of the herb most commonly used in Traditional Chinese Medicine. The properties and taste are sweet, bitter and cold and the meridians affected are the heart, liver, and kidney.

The functions of Rehmannia are to clear heat, cool blood, nourish yin, and promote the production of body fluids.

In Traditional Chinese Medicine Rehmannia is not recommended in cases with excessive dampness or deficiency in the spleen, diarrhea, or a full sensation in the abdominal region.

Dried Rehmannia Root, also called Radix Rehmanniae or Dihuang. Photo courtesy of

Rehmannia Health Benefits in Western Herbal Medicine

Rehmannia is considered an adrenal tonic in Western Herbal Medicine.  Studies have shown it to support the cells of the pituitary gland and adrenal cortex during times of stress. Studies have also shown it’s potential to help autoimmune conditions of the thyroid and adrenal glands. Rehmannia is also useful for treating asthma, skin conditions, and arthritis. Rehmannia also contains compounds that reduce inflammation and capillary fragility, protects the adrenal glands and tonify the blood.

Contraindications and Side Effects of Rehmannia 

Rehmannia should not suitable for pregnant or lactating females. There is a possibility of nausea, bloating, and loose bowel movements with its use.

Are you interested in improving the health of your pet with natural remedies or herbal medicine? Call us!

  • Natchez Trace Veterinary Services (Belle Meade) (615) 750-2248
  • Natchez Trace Veterinary Services (Franklin) (615) 790-8100

Read The Pet Owner’s Guide to Cat Renal Failure


Note: It is always best to consult with your veterinarian before concluding that your pet has a particular ailment. Your veterinarian will also be able to recommend the best dosage of a particular remedy for your pet based on its symptoms, age, size, and specific needs. 


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