Iowa Select Herbal Extracts are convenient to use, an excellent alternative to herb tea or capsules. Made by a cold process method that extracts the maximum amount of vitamins, minerals, and active constituents of the herb. Herbal Extracts are made to exacting standards, such as those of the German Pharmacopoeia, with a Certified Organic grain ethanol alcohol base. Our extracts have an herb strength of 4 to 1 and a 25% alcohol content. Our extensive line of 100's of herbal extracts include many Certified Organic (C.O.)- all grown in compliance with the National Organic Program; some Responsibly Wild-crafted(WC). In 1 ounce (30 ml) and 4 ounce (120 ml) blue glass bottles with a traditional style dropper insert and sealed with a tamper-evident proof lid. Prices for larger sizes are available upon request.