Reaction?
Buy only certified organic turmeric from a company that tests their products for contaminants. The only herbs or spices I buy I get from such companies. Starwest botanicals is one such company. They have just about every herb and spice anyone could ever want, and they have their own lab in which they test for contaminants, foreign matter, purity and that the product is really what it’s supposed to be.
https://www.starwest-botanicals.com/