Vacation supplement stacks: separating travel hacks from hype

What did @olympiaanley actually say?

In a 147K-view TikTok, @olympiaanley walks through her holiday supplement haul as a self-described biohacker. The stack includes magnesium bisglycinate for sleep, creatine monohydrate at 10 grams specifically "so that it permeates the blood brain barrier," polypodium leucotomos as internal sun protection, sodium butyrate for "leaky gut," TruNiagen NAD+ for cellular health, omega-3s, electrolytes, essential amino acids, and collagen peptides. She presents these as a functional, evidence-adjacent routine for travel, sport, and sun exposure. The framing is casual but confident, with affiliate codes dropped for several brands.

Most of the supplements named are legal, widely available, and have at least some research behind them. The problems are in the specific claims she attaches to them, particularly the creatine dosing rationale, which is the most scientifically confused statement in the video.

Does the science back this up?

Partially, yes, but with real caveats. Magnesium bisglycinate genuinely does have sleep support evidence. Polypodium leucotomos has legitimate photoprotection data. NAD+ precursors like NR (which TruNiagen uses) have credible cellular metabolism research. But the creatine claim falls apart quickly, and the "leaky gut" framing around sodium butyrate is doing more marketing than science.

• Magnesium bisglycinate and sleep: Abbasi et al. (2012, Journal of Research in Medical Sciences) found magnesium supplementation improved sleep quality in older adults. The bisglycinate form has good bioavailability. This claim is reasonable.
• Creatine at 10g for blood-brain barrier penetration: Creatine does cross the blood-brain barrier, but standard doses of 3-5g achieve this. There is no peer-reviewed evidence that 10g significantly outperforms lower doses for brain uptake in healthy adults (Wyss and Kaddurah-Daouk, 2000, Physiological Reviews).
• Polypodium leucotomos: Nestor et al. (2014, Actas Dermo-Sifiliográficas) and other trials show PL extract reduces UV-induced erythema. It is a legitimate adjunct, not a sunscreen replacement.
• Sodium butyrate and gut health: Butyrate is a short-chain fatty acid that feeds colonocytes. Canani et al. (2011, World Journal of Gastroenterology) supports its role in gut barrier function. But "leaky gut" is not a formal clinical diagnosis, and the evidence for oral sodium butyrate supplementation in healthy travelers is thin.
• NR and NAD+: Trammell et al. (2016, Nature Communications) confirmed NR raises blood NAD+ levels. Whether that translates to meaningful health outcomes in non-deficient adults remains under active study.

What did they get wrong (or right)?

The creatine rationale is the clearest error. Saying she takes 10 grams "so that it permeates the blood brain barrier" implies that standard doses do not, which is not supported by the literature. Creatine crosses the BBB via a specific transporter (SLC6A8), and transport kinetics are not simply proportional to dose. Doubling the dose does not double brain delivery, and 10g daily over time offers no documented brain-uptake advantage over 3-5g (Dolan et al., 2019, Journal of the International Society of Sports Nutrition).

On the positive side, the polypodium leucotomos call is actually well-informed and underused in mainstream wellness content. The electrolyte use during sweating is sensible. Recommending omega-3s while noting she'd normally refrigerate them shows more product awareness than most supplement influencers demonstrate. The essential amino acid logic before a fasted workout is also physiologically reasonable, supported by Wolfe (2017, Journal of the International Society of Sports Nutrition).

What should you actually know?

A few things worth separating from the affiliate-code packaging. First, no supplement in this stack replaces sunscreen. Polypodium leucotomos reduces UV damage, it does not block it. The American Academy of Dermatology still considers topical SPF non-negotiable. Second, the term "leaky gut" is used loosely in wellness content. Increased intestinal permeability is a real measurable phenomenon, but it is not a self-diagnosable condition that travelers should assume they have and treat with sodium butyrate. Third, collagen peptides in coffee are low-risk but the bioavailability and skin-deposition evidence is modest at best (Barati et al., 2020, Journal of Drugs in Dermatology).

The broader stack is not dangerous, which is worth acknowledging. These are legal supplements, most with at least plausible mechanisms. The concern is the confidence with which specific mechanistic claims are made to a 147K audience, particularly around dosing rationale that does not hold up to scrutiny.