MCT Wellness is not FDA approved, and it never will be in its current form. That’s not a scandal or a red flag specific to this product. It’s how the entire dietary supplement industry works in the United States. The FDA does not approve any dietary supplement before it hits store shelves, including MCT Wellness from Gundry MD.
Why the FDA Doesn’t Approve Supplements
Under a 1994 law called the Dietary Supplement Health and Education Act (DSHEA), the FDA has no authority to approve dietary supplements before they’re marketed. This is the opposite of how prescription and over-the-counter drugs work, where a manufacturer must prove a product is safe and effective before selling it. With supplements, the company can start selling first, and the FDA can only step in after the fact if something goes wrong.
The FDA does not test dietary supplements before they’re sold to consumers. Companies don’t even have to share their safety evidence with the FDA in most cases. The one exception involves supplements containing a “new dietary ingredient,” something not already present in the food supply. In that case, the manufacturer must notify the FDA at least 75 days before selling the product and explain why they believe it’s safe. The main ingredients in MCT Wellness (MCT oil from coconut, grape extract, currant extract) have long histories as food ingredients, so they wouldn’t trigger that requirement.
It’s also worth noting that MCT Wellness does not appear in the FDA’s Health Fraud Product Database, which tracks supplements cited in warning letters, recalls, or public notifications for making illegal drug-like claims or containing undeclared ingredients.
What “Not FDA Approved” Actually Means
When a supplement isn’t FDA approved, it means no government agency has independently verified that the product does what the label suggests. It doesn’t automatically mean the product is dangerous or useless. It means the burden falls on you, the consumer, to evaluate the evidence. The company is legally allowed to make “structure/function” claims like “supports energy” or “supports metabolism,” but it cannot claim to treat, cure, or prevent any disease.
This applies equally to every supplement on the market: multivitamins, fish oil, probiotics, protein powder, and yes, MCT Wellness. If you see a supplement claiming to be “FDA approved,” that’s actually a warning sign, because it means the company is making a false claim.
What’s Actually in MCT Wellness
Each scoop (8.3 grams) contains three active ingredient blends. The primary one is 5,500 mg of C8 MCT oil powder, derived from coconut and carried on acacia fiber. C8 refers to caprylic acid, an eight-carbon fatty acid. Among the different types of MCTs, C8 has the strongest ability to produce ketones because its short chain length allows it to enter the energy-producing parts of cells without needing a special transport system that longer fats require. This rapid conversion is why C8 is marketed as a quick energy source.
The formula also includes 400 mg of a redcurrant and blackcurrant extract (branded as MitoHeal) and 250 mg of a red grape juice extract (branded as CogniGrape). These berries and grapes are sources of plant compounds called polyphenols. Lab and early-stage studies have linked specific polyphenols found in blackcurrants, including quercetin, rutin, and kaempferol, to anti-inflammatory and neuroprotective effects. However, most of this research involves isolated compounds tested in cell cultures or animal models, not finished supplement products tested in humans at these specific doses.
The remaining ingredients are acacia gum (which doubles as the fiber source, providing 2 grams per serving), malic acid, natural flavor, stevia-based sweeteners, citric acid, and silica. The product contains tree nuts due to the coconut-derived MCT oil.
What the Science Says About MCT Oil
MCT oil itself is well-studied. When you consume medium-chain triglycerides, they’re rapidly absorbed and sent straight to the liver through the portal vein, where they’re converted into ketones. Your brain and muscles can use these ketones for fuel, which is why MCT oil is popular among people following ketogenic diets or looking for a caffeine-free energy boost.
The 5,500 mg (5.5 grams) of MCT oil in one scoop of MCT Wellness is a modest dose. Most studies examining the health effects of MCT oil have used between 15 and 74 mL daily (roughly 1 to 5 tablespoons), which translates to significantly more than what a single serving of this product provides. Whether 5.5 grams is enough to produce meaningful ketone levels or noticeable effects varies by individual and hasn’t been tested in a clinical trial specific to this product.
Side Effects and Tolerability
MCT oil is generally well tolerated at the dose found in MCT Wellness. Digestive side effects like nausea, cramping, bloating, and diarrhea tend to show up at higher doses, particularly above 30 grams in a single sitting. In exercise studies, doses of 85 grams caused vomiting and diarrhea in a majority of participants. At 5.5 grams per scoop, MCT Wellness sits well below those thresholds.
If you’re new to MCT oil in any form, some mild digestive discomfort is possible in the first few days. Research on chronic MCT use shows that initial gastrointestinal distress tends to fade as your body adjusts. Starting with a half scoop and working up is a reasonable approach if you’re sensitive.
How to Evaluate a Supplement Without FDA Approval
Since the FDA won’t do the vetting for you, there are a few things worth checking on your own. Look for third-party testing seals from organizations like NSF International, USP, or ConsumerLab. These independent labs verify that a product contains what the label says and is free of contaminants. Whether MCT Wellness carries any of these certifications is something to confirm on the product packaging or the company’s website.
You can also check the Dietary Supplement Label Database, maintained by the National Institutes of Health, which catalogs supplement labels. MCT Wellness does appear in this database, meaning its label has been documented and is publicly accessible for review. This isn’t an endorsement, but it does mean the product’s ingredient list and dosages are on record.
Finally, look at the specific forms and doses of ingredients relative to what’s been studied. A product might contain a well-researched ingredient but at a fraction of the dose used in clinical trials. In the case of MCT Wellness, the MCT oil dose is lower than what most studies have tested, and the berry extracts rely on early-stage research rather than large human trials at these particular amounts.