Medical Foods and Dietary Supplements: What Is the Difference?
A medical food is a distinct regulatory category in the United States, defined in the Orphan Drug Act, intended for the dietary management of a disease and used under medical supervision. A dietary supplement sits under different law and is intended for general use by healthy people. The two differ in their legal definition, their intended use, and the wording each is permitted to carry.
Category at a glance
Medical food
Formulated for the dietary management of a specific disease or condition, under medical supervision.
Dietary supplement
Designed to supplement the ordinary diet of generally healthy people.
Two categories, two legal purposes
| Factor | Medical food | Dietary supplement |
|---|---|---|
| Purpose | Dietary management of a disease or condition | General use by healthy people |
| Supervision | Used under medical supervision | Does not assume physician supervision |
| Disease language | Defined by use in the dietary management of a condition | Cannot claim to diagnose, treat, cure or prevent disease |
| FDA status | No pre-market approval, but FDA requirements still apply | No pre-market approval; different legal category |
What makes something a medical food?
The Orphan Drug Act defines a medical food as a food formulated to be consumed or administered enterally under the supervision of a physician, and intended for the specific dietary management of a disease or condition for which distinctive nutritional requirements are established by medical evaluation. [1][2]
The FDA’s guidance for industry sets out how the agency reads that definition in practice, and the labelling rules sit at 21 CFR 101.9(j)(8). [1][3] Three things follow: the product is for a specific disease rather than for general health, it is used under a doctor’s supervision, and the nutritional requirement it addresses has to be established rather than assumed.
How is that different from a dietary supplement?
A dietary supplement is regulated under the Dietary Supplement Health and Education Act and is intended to supplement the ordinary diet of a generally healthy person. It is not tied to a disease, does not assume medical supervision, and carries the familiar disclaimer stating that the product is not intended to diagnose, treat, cure or prevent any disease.
A medical food carries no such disclaimer, because it is defined by its use in the dietary management of a specific condition. The categories are not tiers of quality; they are different legal purposes, with different labelling consequences.
Does a medical food need FDA approval?
No, and neither does a dietary supplement. Medical foods do not go through the pre-market approval process that applies to drugs. They must nonetheless comply with the FDA’s requirements for medical foods, including current Good Manufacturing Practice and the labelling rules that apply to the category. [1][3]
The distinction that matters is between pre-market approval, which medical foods do not undergo, and regulatory oversight, which does apply to them.
Is a medical food a drug?
No. A drug acts on the body pharmacologically and is approved on the basis of trials demonstrating that it treats a condition. A medical food works through a nutritional pathway and is intended for the dietary management of the nutritional requirements associated with a condition.
That is why the language differs so much between the two: a medical food describes dietary management, not treatment.
Where Hedonia sits
Hedonia is a medical food for the dietary management of the nutritional requirements associated with depression, intended for use under medical supervision alongside a physician-directed treatment plan. It provides three nutrients in one formulation: EPA omega-3, L-methylfolate and SAMe. It is not a drug and it is not a replacement for prescribed medication.
Watch this explained
[0:01] If you’re managing depression, you may have heard that nutrition can play a part.
[0:05] So you search online, and almost immediately things get confusing. One page is making huge
[0:10] promises about supplements. The next is talking about prescriptions and clinical treatment.
[0:15] Then you come across something called a medical food. That is the category Hedonia belongs to.
[0:21] Now, the name medical food can sound a little vague, but in the United States it has a very
[0:26] specific regulatory meaning. A medical food isn’t simply another dietary supplement,
[0:32] but it isn’t a drug either. What makes it different comes down to three things.
[0:36] First, it is formulated for the dietary management of a particular medical condition,
[0:41] not just for general health or well-being. Second, it is designed around a distinctive nutritional
[0:47] need linked to that condition. And third, it is intended to be used under a doctor’s supervision.
[0:54] For Hedonia, that condition is depression. More precisely, Hedonia is formulated for
[1:00] the dietary management of nutritional deficiencies associated with depression.
[1:05] That wording matters. This isn’t about an occasional low mood, everyday stress,
[1:10] or simply having a difficult week. Its intended use is deliberately specific.
[1:16] And that specific purpose shapes the formula. Hedonia provides three nutrients involved in the
[1:22] body’s own mood regulation pathways. The first is SAMe, short for S-adenosyl-L-methionine.
[1:29] SAMe plays a role in methylation and in the synthesis of neurotransmitters.
[1:34] The second is L-methylfolate. This is the active form of folate,
[1:39] ready for the body to use. And the third is EPA, an omega-3 fatty acid.
[1:45] All three nutrients have published evidence relating specifically to depression.
[1:50] Hedonia is available without a prescription, but that doesn’t mean it is intended to be used
[1:54] without medical guidance. It is designed to be taken under a doctor’s supervision.
[2:00] That isn’t simply a disclaimer tucked away in the small print.
[2:03] Doctor supervision is part of what defines the category.
[2:07] In practical terms, Hedonia is designed to be used with antidepressant treatment, not instead of it.
[2:13] And that one word, "with," really matters.
[2:17] So, to be completely clear, Hedonia is not a treatment for depression. It is not a
[2:21] substitute for antidepressant medication, and it is not a substitute for therapy.
[2:26] Its role is more focused. It addresses the nutritional side of managing the condition.
[2:32] Put simply, Hedonia is a medical food made by Hedonia USA
[2:37] for the dietary management of nutritional deficiencies associated with depression
[2:41] and intended for use under a doctor’s supervision.
[2:44] In our next video, we’ll look at the published research behind each of the three nutrients.
References
- US Food and Drug Administration. Guidance for industry: frequently asked questions about medical foods, third edition. March 2023. Docket FDA-2013-D-0880. FDA guidance
- Orphan Drug Act, 21 USC 360ee(b)(3), definition of medical food. 21 USC 360ee
- 21 CFR 101.9(j)(8), labelling of medical foods. 21 CFR 101.9