
How To Qualify For HSA/FSA Reimbursement:
Shop By Health Needs
Shop categories energy, sleep, or heart health, and choose products that match your unique health needs.
Complete Free Health Assessment After Checkout
Take a quick online assessment found on your order confirmation page to determine the medical necessity of your purchased items.
Receive LMN
Once approved, our licensed medical staff will issue your Free Letter of Medical Necessity within 24 hours, qualifying your purchase for reimbursement through your HSA/FSA provider.
About OmneDiem
OmneDiem is redefining integrative wellness by offering innovative dietary supplements designed to address emerging and under-served health needs. Headquartered in Ann Arbor, MI, with additional locations in Fargo, ND, and Harrisburg, NC, the company specializes in digestive health—particularly food intolerances and Histamine Intolerance (HIT).
Since 2016, OmneDiem has been a leader in HIT support, introducing Diamine Oxidase (DAOgest®) as the first and only effective dietary supplement for managing histamine intolerance in the U.S. Through continuous investment in clinical research, education, and product innovation, OmneDiem has expanded its Histamine Digest® product line, setting the industry standard for HIT relief.
Beyond digestive health, OmneDiem is committed to scientific validation and consumer education, working in collaboration with European nutraceutical experts to develop groundbreaking enzyme-based solutions. With a growing retail presence and a robust research pipeline, OmneDiem continues to pioneer advanced wellness strategies that empower both consumers and healthcare professionals.


