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Empirical Labs

About Us

Celebrating 28 years!

Empirical Labs is a full service nutraceutical manufacturing facility located in Fort Collins, CO at the foot of the Rocky Mountains.

We are strong in Liposomal products including stock products, private label and custom formulation.  We also specialize in capsules, powders, and liquids.


In 1989, Herbalists Kelly and Nazreen Goyen founded  Empirical Labs. As natural health enthusiasts they used their own experiences in healing to help shape Empirical Labs. Their consistent purpose  to provide high quality nutraceutical products quickly earned them a reputation for effective formulations made with  exceptional quality  herbs, extracts, vitamins and minerals.

Empirical Labs is managed by Certified Clinical Herbalist, Asa Waldstein CCH, an American Herbalist Guild member and honors graduate of The Rocky Mountain Center for Botanical Studies (Paul Bergner/Feather Jones). Asa possesses extensive herbal wildcrafting and formulation knowledge and has over 15 years managing experience in the natural products industry.

Since 2015 we continue to enjoy working with Dr. Kenneth Proefrock NMD, a well-known educator, leading edge clinician and biochemist.  His experience with liposomes predates ours. We sold our first vitamin C liposomal in 2009.   Dr. Proefrock was producing injectable and oral liposomes back in 2006. Dr Proefrock has helped us create the next generation of liposomes, which we refer to as the Qualisome™ line. Qualisome™ technology is 100% owned by Empirical Labs and is not licensed from any other company.

Our team can turn your liposomal, capsule, powder, or liquid idea into a workable product with reasonable minimums and competitive pricing. Our custom formulation minimums start at 1000 units and private label at just 100 bottles.



Kelly Goyen (Co-Founder)


Kelly along with his wife Nazreen Goyen (Co-Founder) is the CEO and leading light in the direction and strategy of Empirical Labs (E-Labs).

Since, the start in 1989 E-Labs has been stirred and directed by Kelly’s pioneering mentality which has seen some ground breaking, market leading products

Kelly has a host of citations and awards for his work 


Asa Waldstein (General Manager)


Empirical Labs is managed by Asa (Certified Clinical Herbalist )

Asa brings a shrewd cross modality management style which has led to E-Labs growing success coupled with expert knowledge in the field of Nutrition.

Asa Waldstein CCH, an American Herbalist Guild member and honours graduate of The Rocky Mountain Centre for Botanical Studies (Paul Bergner/Feather Jones). Asa possesses extensive herbal wild crafting and formulation knowledge and has 


Dr. Kenneth Proefrock NMD

R&D Consultant


For the past 20 years, he has conducted a very busy Naturopathic medical practice in Surprise, Arizona.

He is the sole owner and formulator for Vital Force Naturopathic Compounding, which provides consulting services and a wide variety of unique and effective compounds for the Naturopathically oriented medical community.

This includes developing and using carefully constructed  liposomes since 2005. He is also the Vice-President for the North American Board of Naturopathic Examiners, the chairperson for the biochemistry portion of the Naturopathic Physician’s Licensing Exam, and co-founder and current President of the Naturopathic Oncology Research Institute (NORI).