Product Description Avacare Milk Thistle Oil is a natural supplement that is used regularly to improve liver function, stimulate the reproductive system and promote feather regeneration. It contains silymarin, betaine, choline, and fatty acids such as linoleic acid, and natural tocopherols, which are effective elements in expelling toxins, improving digestion, and stimulating fertility in birds. Use throughout the year to support overall performance, and recommended during mating or moulting seasons or after treatment periods.