1 oz. (28 grams) White Oak Bark Powder Wild Crafted (Quercus alba) Also known as Quercus alba or Quercus robur, and oak bark. Introduction The oak’s botanical name quercus comes from the Celtic words quer (fine) and cuez (tree). Constituents Starch, tannins, resins, calcium oxalate, quillaic acid. Parts Used Dried or toasted bark. Gentle dry heat increases the concentration of volatile oils in the bark. Bark, ground before storage. Gentle heating concentrates healing volatile oils in oak bark pieces, but destroys volatile oils in oak bark once it has been powdered. Typical Preparations Baths, washes, infusions, teas, tinctures. Summary Precautions Avoid bathing a large area of inflamed skin all at once. Oak bark infusions, extracts, and tinctures taken internally should be timed so that any medication (especially any medication that has to be taken on a relatively alkaline or empty stomach) is not in the digestive tract. Take oak bark 4 hours before or 4 hours after any prescription medication. This information has not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease. Save on shipping if all items are paid for in one Paypal transaction If you are looking for larger quantities, or other herbs not listed, please inquire with “Ask seller a question” If you have a problem with your purchase, please contact me first before leaving feedback, so we can reach resolution promptly and efficiently. I intend to please and am always honest and reasonable in my business transactions for over 10 years. Bid With Confidence! Read my feedback. I’m a very interactive seller and have high marks for cooperative selling. I guarantee this will be a positive EBay experience for you. The information in the listing is just a brief description found on the internet that describes the item, please do your own research before purchasing, or contact a health professional for futher information about this item. Ebay does not allow me to give any medical advice pertaining to any of the herbal tems 1 Ounce (oz) = 28 Grams(gm) = 28000 Milligrams(mg) Please Note: As I do my best to keep the pictures in the description current, The color, cut, and packaging may vary slightly as I do not purchase more than I can sell in a couple months, and these can be different from batch to batch. Be assured that you are receiving the item you purchased Shipping for each additional item is $0.25 if all items are paid for in one Paypal transaction. Shipping discounts should automatically be applied when you check out, If not, Please click “Request Total”. If you choose to pay for items individually, the shipping discount will not be applied. Please note: Feedback is left automatically, once it is received…. If you plan on purchasing multiple items, all you need to do is add them to your cart first, then click checkout when finished, then all items will have discounted shipping charges.if you do pay for the items individually, they will be shipped by individually, so if you want to save money on your order, add to cart first.