The Best Supplements for Hyrox in Australia (2026)

Most Hyrox supplement guides are written by supplement brands or US publications, which is why they read like rotating roster of whoever's paying for the affiliate slot. This is the AU-specific list, ranked by evidence — not by commission rate.

How we ranked these

Every supplement on this page was scored on four things: evidence base (peer-reviewed studies for the category), Hyrox-specific relevance (does the mechanism map onto repeated-surge endurance + strength?), brand quality (third-party tested, no proprietary blends), and price. We feature only what's purchasable end-to-end on our shop — no products that need an accessory you'd source elsewhere.

Tier 1 — Strongest evidence

These four have the largest, most consistent benefit signals in the literature for the kind of work Hyrox demands.

Creatine monohydrate · 5g/day

The single most-studied performance supplement in sports nutrition. Mechanism: creatine elevates skeletal-muscle phosphocreatine stores, which means faster ATP resynthesis between high-intensity efforts.^1,2 Hyrox is a structured sequence of high-intensity surges, so the mechanism maps directly. Recent meta-analyses also show creatine supplementation increases time-to-exhaustion in endurance work and is particularly effective when an event requires multiple intensity surges or end-spurts.¹

No loading needed for chronic use — 5g/day for 3-4 weeks reaches saturation. Take it with carbs if you want marginally faster uptake; otherwise, time of day doesn't matter.

Our pick: Creapure is the gold-standard pharmaceutical-grade creatine monohydrate. We feature it as the only creatine on this site.

Magnesium glycinate · 200-400mg

Magnesium is involved in over 300 enzymatic processes, including muscle relaxation and nervous-system regulation. Most Australian adults are mildly under-replete (the AU NNS data shows ~35% below RDI). For athletes the cost of being under is higher: cramping, poor sleep onset, slower overnight recovery.

Glycinate is the form that consistently performs best in sleep-onset and tolerance studies — the cheaper magnesium oxide is poorly absorbed and a common cause of GI upset.

Our pick: Switch Sleep+ combines magnesium glycinate with KSM-66 ashwagandha and zinc — the same stack we'd assemble individually, in one capsule.

Electrolytes · 350-600mg sodium pre-race

Hyrox is an indoor event but a 60-110 minute one. Sweat losses are real, especially on the running portions and the heated stations. Sodium is the keystone electrolyte for endurance work — not because you sweat that much of it, but because sodium loading expands plasma volume in the 60-90 minutes pre-start, which is mechanically helpful for sustained high outputs.⁴

Our pick: MTHFR Support Electrolytes combine sodium, potassium, magnesium, chloride with D-ribose and taurine — the broader formula matches Hyrox's energy demands better than a sodium-only product.

Omega-3 EPA/DHA · 2-3g combined

EPA + DHA modulate the post-exercise inflammatory response. Multiple meta-analyses show modest reductions in DOMS and muscle damage markers when taken at 2-3g/day combined EPA/DHA over 4+ weeks. The case for nervous-system recovery (mood, sleep quality, cognitive performance under fatigue) is also good.

Our pick: Metagenics OmegaGenics is high-strength EPA/DHA at pharmaceutical-grade purity. Worth the premium over generic fish oil.

Tier 2 — Strong evidence, situational

Curcumin · 200-1500mg/day

Curcumin (the active compound in turmeric) has 6+ RCTs showing reduced DOMS at 200-1500mg/day, mostly through anti-inflammatory pathways that don't blunt training adaptations the way high-dose ibuprofen can. Bioavailability matters — choose a micellar or liquid formulation over standard turmeric capsules.

Whey protein · 25-40g post-session

Whey isolate is the highest-quality, fastest-absorbing protein source for the post-workout window. Daily totals matter more than timing, but if you're going to put protein anywhere, post-Hyrox is the right place.

Ashwagandha · 300-600mg KSM-66

Ashwagandha is an adaptogen with reasonable evidence for cortisol modulation in stressed populations — relevant if your training has you wired at night or your sleep has slipped. KSM-66 is the most-studied root extract.

Beta-alanine · 3.2-6.4g/day, 6+ weeks

Strong evidence for sustained-output efforts in the 1-4 minute range, which maps onto sled push, the latter half of wall balls, and any near-redline section. Causes a harmless tingling sensation (paresthesia) at higher doses — split into smaller doses through the day to manage. Note: we don't currently carry a stand-alone beta-alanine product on the shop. Switch Amino contains some via its EAA complex; otherwise it's an obvious gap to fill in a future catalogue refresh.

Caffeine · 3-6mg/kg, 30-60 min pre

Well-documented ergogenic. The ISSN position stand summarises the evidence: 3-6mg/kg pre-event reduces perceived effort and improves time-trial-type performance.⁴ Most Hyrox athletes get this from coffee or pre-workout — we don't currently feature a stand-alone caffeine product because most athletes are already dialled in.

Tier 3 — Mixed evidence, useful in context

EAA / BCAA blends

Useful sipped through long sessions if you train fasted or eat low-protein, less useful if your daily protein is already 1.6-2.2g/kg. Switch Amino is a solid full-formula option (EAAs + BCAAs + electrolytes + cofactors).

Collagen protein bars

The strongest case for collagen is connective-tissue support — joints and tendons, not muscle. Useful as on-the-go nutrition where the alternative is skipping protein entirely; not a replacement for whey when muscle protein synthesis is the goal.

The Hyrox supplement stack — what to take when

What we don't recommend (and why)

A few categories that crop up in Hyrox supplement marketing but don't earn a place in our stack:

• Proprietary "fat-burner" blends — undisclosed doses, often containing high-dose stimulants that interact poorly with race-day caffeine.
• "Test boosters" and exotic adaptogens — most have weak evidence and overlap with much better-evidenced compounds.
• Chronic high-dose NSAIDs (ibuprofen, naproxen) — used as "recovery", they can blunt training adaptation. Reserve for actual injury, not soreness.
• Anything claiming to "treat", "cure", or "prevent" anything — that's TGA territory, not supplement marketing.

Australian shipping and TGA notes

Every product on this page ships from Australian suppliers via our shop. TGA listing or registration applies depending on the product — supplements are listed therapeutic goods (lower-rigour, ingredient-only checks); a small number of recovery products are general goods. Suppliers handle their own compliance; we link to brands that meet AU labelling standards.

The full stack

ATP Science

ATP Creapure (Creatine Monohydrate)

Creapure is the gold-standard pharmaceutical-grade creatine. Daily 5g supports phosphocreatine recovery between high-intensity surges — the single most studied supplement for Hyrox-style work.

From

$77

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Switch Nutrition

Switch Sleep+ Capsules

Magnesium glycinate, ashwagandha and zinc combined to support deeper sleep — the cheapest performance lever in any Hyrox build. Take 1-2 capsules an hour before bed.

From

$70

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MTHFR Support

MTHFR Support Electrolytes

Sodium, potassium, magnesium and chloride for the long-haul sweat losses across 60-110 minutes of Hyrox racing. Includes D-ribose and taurine for sustained energy.

From

$58

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Metagenics

Metagenics OmegaGenics Fish Oil

High-strength EPA/DHA — modulates post-exercise inflammation and supports nervous system recovery during heavy training blocks. Pharmaceutical-grade purity.

From

$78

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