What did @summermcdermaid actually say?
In a casual unboxing video, the creator walked through five compounds she received in the mail: GHK-Cu for skin and hair, what she called "tricevatide" (almost certainly tirzepatide) at a low weekly dose for inflammation, NAD for focus and recovery, MOTS-c for metabolic function and fat utilization, and "Sarah Morlin" (sarmorelin, a GHRH analogue) for lean muscle, sleep, and recovery. She acknowledged she is not a doctor and framed the whole thing as a personal journey, not medical advice.
To her credit, that disclaimer is more than most creators bother with. But disclaimers do not make ambiguous or incomplete claims disappear. Several of the stated reasons for taking these compounds range from loosely supported to genuinely contested, and one compound in the stack is not technically a peptide at all in the way most viewers would understand the term.
Does the science back this up?
It depends heavily on which compound you are asking about. GHK-Cu has the most legitimate topical skin data. NAD precursors have real but often overstated human evidence. The others are in far murkier territory.
GHK-Cu (copper peptide) has a reasonable body of in-vitro and some clinical evidence for collagen stimulation and wound healing. A review by Pickart and Margolina (2018, Cosmetics) found consistent signaling effects, though most strong data is topical, not systemic. NAD supplementation via precursors has been studied in humans, but direct NAD injections or infusions for "focus and mental clarity" as a primary benefit lack strong clinical trial support. Most human NAD data focuses on metabolic and cardiovascular markers (Martens et al., 2018, Cell Metabolism). MOTS-c is a mitochondrial peptide with genuinely interesting early research in metabolic function (Lee et al., 2015, Cell Metabolism), but human clinical trials are essentially nonexistent. Calling it proven for "fat utilization" in humans is a stretch. Sarmorelin's evidence for lean body composition in healthy adults is limited, mostly extrapolated from growth hormone deficiency studies.
What did they get wrong (or right)?
The tirzepatide claim is the most significant problem here. Tirzepatide is a GIP/GLP-1 receptor agonist approved by the FDA for type 2 diabetes and obesity. Taking it "for inflammation purposes" at a "low dose" is not a recognized clinical indication.
There is some early mechanistic interest in GLP-1 receptor agonists and inflammatory pathways, but using an approved drug off-label at self-directed doses for a vague anti-inflammatory goal is not the same thing as established evidence. Tirzepatide is also not a peptide in the traditional "peptide therapy" sense that the hashtag community typically uses. It is a synthetic dual-receptor agonist, and the FDA has specifically flagged compounded tirzepatide as a significant patient safety concern (FDA, 2024). Bundling it into a casual TikTok haul without addressing that context is genuinely misleading regardless of the disclaimer. The GHK-Cu claim for skin and hair is the most defensible thing in this video. The NAD claims for "overall wellness" are vague enough to be nearly unfalsifiable. MOTS-c for energy is plausible but not proven in humans.
What should you actually know?
A few things matter before anyone watches a video like this and considers copying it. First, stacking multiple compounds with different mechanisms of action simultaneously makes it nearly impossible to know what is doing what, or what is causing any side effect. Starting five compounds at once is poor experimental design even by self-experimentation standards.
Second, the FDA has issued specific guidance warning consumers about compounded tirzepatide and semaglutide products obtained outside of traditional pharmacy channels. Receiving any of these in the mail from a social media referral chain warrants serious scrutiny of the prescribing and dispensing process. Third, MOTS-c and sarmorelin have so little human safety data that framing them as obvious additions to a starter stack understates real unknowns. Fourth, none of these compounds should be evaluated purely on the basis of a TikTok haul video, including this one. If you are curious about peptide therapy, the appropriate conversation starts with a licensed clinician who can review your bloodwork and medical history, not a creator's mail delivery.