Fullscript Collective
Dr. Kara Fitzgerald ND, IFMCP

Founder, Functional Medicine Clinic Immersion

Dr. Kara Fitzgerald is on faculty at the Institute for Functional Medicine (IFM) and is an IFM Certified Practitioner. She is the lead author and editor of Case Studies in Integrative and Functional Medicine, and a contributing author to Laboratory Evaluations for Integrative and Functional Medicine and the IFM’s updated Textbook for Functional Medicine.

Dr. Fitzgerald received her doctorate of naturopathic medicine from National College of Natural Medicine in Portland, OR. She completed the first CNME-accredited postdoctoral position in nutritional biochemistry and laboratory science at Metametrix (now Genova) Clinical Laboratory under the direction of Richard Lord, PhD. Her residency was completed at Progressive Medical Center, a large, integrative medical practice in Atlanta, GA.

She regularly lectures internationally for several organizations and is in private practice in Sandy Hook, Connecticut.

Content contributed by the author

Accessing Creatine Potency

Creatine supports muscle health and performance, but quality varies. Fullscript’s Quality Program tests creatine products to ensure potency, purity, and safety.

Assessing Collagen Potency

Collagen supports joints, skin, and tissues, but quality varies. Fullscript’s Quality Program tests collagen products to ensure purity, potency, and safety.

Vitamin B3 Potency: A Hidden Variable in Supplementation

Vitamin B3 supports energy and DNA health, but dose inconsistencies pose risks. Fullscript’s Quality Program verifies potency and label accuracy for safety.

Assessing B6 Potency

Vitamin B6 supports mood, cognition, and metabolism, but risks of deficiency or excess exist. Fullscript ensures quality with rigorous B6 product testing.

Assessing NAC Potency

As part of our ongoing commitment to the Fullscript Quality Program, we tested several NAC products available in our catalog to verify potency and confirm label accuracy.

Assessing D3+K2 Potency

Vitamin D3 and K2 support bone and vascular health, but formulation and bioavailability inconsistencies can impact nutrient balance and clinical outcomes.