That is a great question! The reason that we choose to use zinc sulfate in our products is because it has the highest reported absorption rate at 71% (compared, for example, to zinc citrate at 61.3%, zinc gluconate at 60.9% or zinc oxide at 49.9%).

Additionally, zinc sulfate is water soluble (compared to the water insoluble zinc gluconate and zinc oxide), making it easier to formulate a simple liquid zinc supplement.

MaryRuth’s always aims to use the best ingredients possible in our supplements to aid people in getting the nutrients they need, and these reasons all were taken into consideration when choosing zinc sulfate for our Liquid Zinc product.