Yes that's absolutely fine, many of our customers do this already, the solubility and taste of each powder does vary obviously. We only suggest not doing it with our Immune and Multibiotic products as it could cause some of the live bacteria to die off. Also, the Omega is an oil in a softgel capsule so this would need piercing and the oil squeezing out. Finally, don't add the products to anything hot as some nutrients are heat sensitive.