What did @dpt_shurtliff actually say?
The creator, identified as a DPT (Doctor of Physical Therapy), made several specific claims: that synthetic peptides like Ozempic cause side effects, that "natural" plant-based peptides work with your cells instead, and that these products "increase NAD ATP" so your cells "live longer." They also claimed these peptides produce healthier mitochondria, more energy, muscle building, fat burning, and craving reduction, with "long-term results" that synthetics cannot deliver.
The video is a sponsored post for MAKEWellness. That context matters. The creator is not delivering neutral clinical education here. They are selling a product by contrasting it favorably against a category of medications, including a GLP-1 receptor agonist that has substantial clinical backing. Viewers should know that upfront, because it shapes how every claim lands.
Does the science back this up?
Not in any meaningful way. The core claims about "natural peptides" boosting NAD, extending cell life, and outperforming synthetic peptides lack peer-reviewed support for the specific products being promoted.
Peptides are short chains of amino acids. Whether they come from a plant source or a lab, your digestive system breaks them down into individual amino acids before they reach your bloodstream. The idea that an orally ingested "plant-based peptide" reaches your mitochondria intact and raises NAD or ATP levels is not supported by current evidence. NAD precursors like nicotinamide riboside have actual research behind them (Yoshino et al., 2018, Cell Metabolism), but those are not peptides. Conflating the two is a meaningful error.
Mitochondrial function is genuinely linked to peptide signaling in research contexts, but those studies involve injectable bioactive peptides like SS-31 (Szeto, 2014, Antioxidants and Redox Signaling), not oral plant-derived supplements. The leap from bench science to "take this supplement and your mitochondria get healthier" is not supported.
What did they get wrong (or right)?
They got one thing directionally right: synthetic peptides do carry real side effects. GLP-1 agonists like semaglutide are associated with nausea, vomiting, gastroparesis risk, and in some cases pancreatitis concerns. That is documented. Acknowledging that pharmaceutical peptides are not consequence-free is fair.
But the rest falls apart. The claim that these products are "side-effect-free" is not a provable statement for any supplement. Absence of reported side effects is not the same as safety. The FDA does not evaluate supplements for efficacy or safety before they hit the market.
The framing that synthetics give you "none" of the long-term results that these products deliver is backward. Semaglutide has years of randomized controlled trial data, including the STEP trials (Wilding et al., 2021, New England Journal of Medicine), showing sustained weight loss. The MAKEWellness product has none of that. Comparing them as though they are equivalent options, with the natural one winning, is misleading to the point of being irresponsible.
The "NAD ATP" phrasing is also a red flag. NAD and ATP are distinct molecules with different metabolic roles. Bundling them together suggests the script was written for marketing, not biochemistry.
What should you actually know?
If you are considering peptide therapy, the distinction that actually matters is not "natural vs. synthetic." It is whether a product has clinical evidence behind it, is dosed accurately, and is supervised by someone with prescribing authority and knowledge of your health history.
Oral peptides face a fundamental bioavailability problem. Most are degraded in the gut before absorption. This is why clinically studied peptides, including BPC-157, TB-500, and GLP-1 agonists, are typically administered via injection. Products claiming oral peptides produce systemic cellular effects should be held to the same evidence standard as any other therapeutic claim.
The creator holds a DPT credential. Physical therapists have real clinical training. That credential does not transfer to supplement biochemistry or peptide pharmacology, and it does not make a sponsored post scientific. If you are curious about peptides for fat loss, recovery, or metabolic health, speak with a physician or registered clinical provider who can review your actual lab work and health history before recommending anything.