Black Walnut is a good source of protein nutrients such as iodine chromium potassium the trace mineral manganese and antioxidant Vitamins A and C.Black Walnut is not suitable for use during pregnancy, or by those trying to conceive. Website : https://www.octinutrition.co.uk/ Email : [email protected] Address : Octi Nutrition Ltd, Gogarloch Syke, Edinburgh, EH12 9JE, United Kingdom