GHK-Cu and NAD for ADHD overwhelm: what the science says

What did @haylie.beee actually say?

Haylie bought three peptides, NAD+, GHK-Cu, and Melanotan II (MT2), reconstituted them herself, and self-injected without any apparent clinical supervision. She describes NAD+ as good for "cognitive function" and "brain fog," GHK-Cu as "the pretty peptide" that helps with hair, skin, collagen, and joint issues, and MT2 as a "tanning peptide" that also "lowers UV damage risk." She experienced nausea and fatigue after MT2, attributed injection site burning to insufficient bacteriostatic water, and recommends the supplier Patera based on personal referrals. The whole video is framed as an ADHD-friendly how-to, complete with reconstitution ratios.

To her credit, she does not claim these are cures, and she leads with a "not medical advice" disclaimer. But framing a self-injection tutorial as relatable content for impulsive buyers does real harm regardless of intent.

Does the science back this up?

It depends heavily on which peptide you are asking about. The evidence base ranges from genuinely promising (GHK-Cu, NAD+) to actively concerning (MT2). None of these are FDA-approved for the uses she describes, which matters more than people realize.

NAD+ precursor supplementation has legitimate research behind it. Yoshino et al. (2021, Science) showed metabolic benefits from NMN in postmenopausal women, and there is ongoing interest in NAD+ for neurological function. But injectable NAD+ sold through unregulated channels is a different product category than what was studied.

GHK-Cu has a real scientific literature. Pickart and Margolina (2018, Cosmetics) documented its roles in wound healing, collagen synthesis, and anti-inflammatory signaling. The joint-repair angle is less studied in humans but not implausible.

MT2 is the problem. It is not approved anywhere for tanning or UV protection. Animal studies show it raises blood pressure, can cause spontaneous erections, nausea, and there are documented cases of melanoma changes linked to its use. The claim that it "lowers UV damage risk" is a dangerous oversimplification with no solid clinical backing.

What did they get wrong (or right)?

She got the GHK-Cu basic description mostly right. It is a copper peptide, it does have evidence for collagen stimulation and anti-inflammatory properties, and timing it around sleep is a reasonable approach given that tissue repair processes are more active during sleep. That part is not irresponsible.

The MT2 "UV protection" claim, however, is wrong in a way that could genuinely hurt someone. Melanin production does not equal sun protection. Dermatologists consistently warn that using MT2 as a substitute for sunscreen is dangerous. Nausea and fatigue after her midday dose are classic MT2 side effects, not coincidences. She experienced exactly what the adverse event profile predicts.

On reconstitution, her explanation that bacteriostatic water volume changes "potency" is imprecise. What changes is concentration, which directly determines your dose per unit drawn. Calling it "potency" glosses over a distinction that matters when you are injecting yourself. Dosing errors with peptides are real, and this framing understates the risk.

She is also self-diagnosing and self-treating a "joint issue" with an injectable peptide purchased online. That is not a minor footnote.

What should you actually know?

These are research-grade or gray-market compounds, not supplements. The FDA has specifically warned that peptides like BPC-157 and others sold as "research chemicals" are not legal for human use without a prescription and clinical oversight. MT2 has no approved human indication, period.

The supplier endorsement is worth flagging. Recommending a specific peptide vendor to nearly 2,000 viewers based on knowing people "in real life" who use them is not a credible quality standard. Peptide purity and sterility require third-party certificate of analysis testing, not social proof.

If you are genuinely interested in peptide therapy, the appropriate path is through a licensed provider who can order compounded peptides from a 503A or 503B accredited pharmacy, review your bloodwork, and supervise dosing. That is not gatekeeping, it is the difference between a therapeutic intervention and a DIY experiment with injectables.

NAD+ and GHK-Cu have enough legitimate science that supervised use through proper channels is a reasonable conversation to have with a provider. MT2, given its risk profile and lack of approval, is harder to justify in any context outside of a clinical trial.