Frequently Asked Questions

We have compiled a list of the most frequently asked questions here, with answers by our panel of experts. However, if you have product-specific questions, visit the FAQ section on the individual product page, where you’ll find more in-depth information.

Where can I purchase Doctor's Best products?

Doctor’s Best products can be found at vitamin specialty, chain and independent natural product stores across the country, as well as online. We recommend that you use our online store finder to find a store near you or one of our online partners who can ship to you directly.

Where are Doctor's Best products manufactured?

Doctor's Best product are quality tested and manufactured in the US in CGMP facilities.

What is the country of origin for Doctor's Best products?

Doctor’s Best products are quality tested and manufactured in the United States using highly qualified cGMP manufacturers and raw material ingredients. Doctor’s Best sources raw materials from around the world and ingredients are subject to the intense testing and verification regardless of geography of origin.

What are your veggie caps made from?

Vegetarian Capsules are manufactured using Hydroxypropyl methylcellulose (HPMC) obtained from cellulose. They do not contain any materials of animal origin and therefore, they are suitable for vegans.

What are the "Other Ingredients" and why are they used?

Excipients or non-active other ingredients are typically used in very small amounts to improve appearance or manufacturing efficiencies. The amount and type of excipients used in any product can vary from one production run to another. For this reason the FDA requires all manufacturers to display the existence of an excipient but not the amount used. Doctor’s Best only uses qualified and tested ingredients to assure safety and reliability and requires conformance to all FDA required cGMPs during manufacture

On many of the labels the Suggested Adult Use will list: Take 2 capsules daily, but it does not state whether they should be taken together or separately. What is the correct usage?

Unless otherwise specified on the label, the product may be taken together or separately.

How long should it take for a capsule or softgel to dissolve?

For a 2-piece gelatin capsule or softgel, the USP standard for maximum dissolution time is 30-45 minutes