Can you please tell me what lichen source you use? That, is what is the name of the lichen? Also how much of the lichen is needed to derive how much Vit. D?

We source our ingredients globally and third-party test each ingredient for purity and potency before making our products in our manufacturing facility in Phoenix, Arizona. Our source location, type, and extraction processes are part of our proprietary information and trade secrets. We apologize for any inconvenience this may cause. If you need further assistance, please don't hesitate to contact us at https://globalhealing.com/pages/contact.