The staff at "Freeda Vitamins" were trained by Elaine Gottschall to formulate SCD legal supplements.
Please find their response for your inquiry below:
We do not make zinc sulfate. I looked up zinc sulfate 220 mg online and the supplements that I looked at were 50 mg elemental zinc per capsule. Our Elemental Zinc 30 mg and Zinc Gluconate 15 mg supplements are SCD legal. Both are from zinc gluconate. Elemental Zinc 30 mg is 30 mg of elemental zinc and Zinc Gluconate 15 mg is 15 mg of elemental zinc.