I've been giving this a lot of thought lately. Each 5 mL dose of selenium/vitamin E gel gives 3 mg of selenium and 500 IU (or .5mg) of Vitamin E. Compare that to the following: 100g brazil nuts: 1917mg selenium 5.73mg Vit E " sunflower seed: 79.30mg selenium 2.70mg Vit E " flax seed: 5.50mg selenium .32mg Vit E " hazelnuts/filberts 2.40mg selenium 15.03mg Vit E " sesame(dried) 5.70mg selenium .25 Vit E (also high in Calcium) 100g = about 3.5 oz Why don't we use these natural supplements with goats? I know my goats like acorns. They are spending all their time right now looking for the pieces the squirrels drop. Acorns don't have any significant amount of selenium or vitamin E, but my point is that they are nuts. Doesn't it seem like nuts and seeds are more natural to a goat's diet than grains? I know they are more natural than commercial gels and powders.