Sometimes my powdered supplements get clumpy. Should I be concerned?

Reviewed and edited by Tod Cooperman, M.D.

Initially Posted: 11/09/2012 | Last Updated: 08/08/2017

You are absolutely right that buying supplements as a powder (or as a bottled oil) can be much less expensive than buying pills. It can also be more convenient if you have trouble swallowing pills or if you need to adjust the dose. ConsumerLab.com has tested many products sold in powder form, including Vitamin C Supplements, Vitamin D Supplements, Calcium Supplements, Joint Supplements, Magnesium Supplements,Multivitamin and Multimineral Supplements, and others.

However, some supplements have a tendency to accumulate water and there are some risks to consider -- as well as remedies to these risks. See the full answer to learn how to best use and store powdered supplements >>