Best supplements for Hyrox training: what actually works

Most supplements are underdosed and oversold. The shelf is full of tubs promising things they can't deliver. For Hyrox, the list of what actually earns its place is short, and that's good news for your budget and your stomach.

Here are the best supplements for Hyrox training, judged on one question: does the evidence say it helps you train harder, recover faster, or hold pace on race day? Everything else stays on the shelf.

Creatine: the most proven one you own

Creatine monohydrate is the most researched supplement in sport, and it's a good fit for Hyrox. The event mixes repeated high-intensity efforts with running, and creatine supports the energy system you lean on for the sleds, burpees, and wall balls.

The International Society of Sports Nutrition's position stand backs 3 to 5g per day, taken consistently, with no need to load (Kreider et al., 2017). Consistency beats timing here. The athlete who takes 4g every day for months wins over the one who cycles it perfectly for two weeks then forgets.

It's also cheap. Our Creatine is £12.99 and lasts a long time. We went deeper on the event-specific case in creatine for Hyrox if you want the full breakdown.

Electrolytes: the difference in the back half

Hyrox makes you sweat for an hour or more, and the sodium you lose affects how you hold pace late in the race. Replacing it is one of the highest-return habits in the sport, and it costs pennies compared to the training you've already put in.

Look for sodium in a sensible dose rather than a long list of trace minerals. Sodium is the one you lose in performance-relevant amounts. Electrolyte+ is built for this at £1 per serving, and it comes pre-measured so you're not scooping powder on race morning.

Caffeine: the legal edge, used properly

Caffeine is one of the few performance aids with a deep evidence base behind it. It improves endurance and reduces how hard a given effort feels. The ISSN position stand points to 3 to 6mg per kilogram of bodyweight, taken around 60 minutes before you start (Guest et al., 2021).

The catch is the crash and the jitters that come with badly formulated pre-workouts. A clean dose helps. A 400mg bomb that leaves you anxious on the start line does not. We built Pre-Shot as a ready-to-drink pre-workout with a sensible caffeine dose and supporting actives, no artificial sweeteners, and no itch or crash. It's £9.99 for a 6-pack.

Timing matters more than people think. Our guide on caffeine timing covers when to take it for training versus racing.

Collagen: the one for your joints

Hyrox is hard on connective tissue. Running volume plus heavy functional movements load your tendons and joints session after session. Collagen has growing evidence for supporting tendon and ligament health, particularly when taken around training.

It won't make you faster this week. It's an investment in staying healthy enough to keep training, which is what actually drives progress over a race season. Our Collagen is bovine-sourced at £18.99 and aimed at athletes putting in real volume.

What to skip, for now

Plenty of popular supplements have thinner evidence or matter less for this event. Fat burners, most "test boosters," and the endless parade of proprietary blends rarely justify the cost. If a label hides its doses behind a blend name, that's usually because the doses don't hold up.

Food does most of the work. Supplements fill the gaps that training and a busy life leave behind. Get your protein, sleep, and carbohydrate around training sorted first, then add the few supplements above where they earn their place.

Protein is the real foundation

Before you spend on anything fancy, hit your protein target. It drives the recovery and adaptation that lets you absorb the training, and most athletes under-eat it on busy days. A rough guide is 1.6 to 2.2g per kilogram of bodyweight per day, spread across your meals.

A protein powder counts as a supplement, but it's closer to food than to the performance aids above. It earns its place by making the target easier to hit when you're rushing between work and training. Sort that first, then layer the rest on top.

Match supplements to your training block

Your stack should shift with your calendar. In a heavy build block, recovery support matters most, so creatine, protein, and collagen do the heavy lifting. As you sharpen toward a race, the pre-workout and electrolyte habits become the ones you rehearse, so race day feels familiar.

Building a simple stack

You don't need all of it at once. A sensible starting stack for most Hyrox athletes is creatine daily, electrolytes around hard sessions and races, and a clean pre-workout before the efforts that matter. Add collagen if your joints are taking a beating from the training load.

For a wider view of the categories and how they fit together, our guide to the types of workout supplements for Hyrox athletes maps the full landscape.

Common questions

What's the single best supplement for Hyrox? Creatine, for most people. It has the deepest evidence base, suits the event's energy demands, and costs very little per serving.

Do I need a pre-workout? Not for every session, but a clean one helps on race day and key efforts. The active that does most of the work is caffeine, dosed sensibly.

Is it worth taking all four at once? No need. Start with creatine and electrolytes, add a pre-workout for the sessions that matter, and bring in collagen if your joints are under load.

Keep it short, keep it dosed properly, and keep it consistent. Four supplements you take every week beat twelve you take when you remember.