Is there any reason why I couldn't add 2 tsp of 320 ppm to 8 oz of finished elderberry syrup? If I did that that should give me a 40 ppm mixture correct? I would only use this for cold/flu or other ailments, not as preventative.
The syrup is basically water, elderberries, rosehips, cinnamon, astragalus, honey and lemon. I could omit the lemon if the acid would screw with the Colloidal Silver.