Creatine Guide: What It Is, How to Take It, and How to Choose (NZ)

What Is Creatine?

Creatine is a naturally occurring compound your body produces itself and also gets from food, mainly meat and fish. Around 95% of the body's creatine is stored in skeletal muscle, largely as phosphocreatine (PCr) — a rapid-access energy reserve. Vegetarians typically start with lower baseline muscle creatine than meat-eaters, which is one reason they often see a larger relative increase from supplementing.

Creatine monohydrate is the most-studied form and the default recommendation across the sports-nutrition research base. It is not a steroid, not a stimulant, and not related to caffeine — it is a naturally occurring compound your muscles already use every day.

How It Works

Muscle contraction is powered by ATP (adenosine triphosphate). During short, high-intensity efforts — a heavy set, a sprint, a jump — your muscles burn through available ATP within seconds. Phosphocreatine donates a phosphate group to rapidly regenerate ATP, extending how long you can sustain that intensity before fatigue sets in.

Increasing your muscle phosphocreatine stores through supplementation gives this energy system more capacity to draw on, which is why creatine's benefits show up mainly in short, repeated, high-intensity work — not in steady, low-intensity activity where a different energy system dominates.

Benefits

Creatine monohydrate is one of the most consistently effective ergogenic (performance-supporting) supplements studied in sports nutrition, per the International Society of Sports Nutrition's 2017 position stand. Evidence strength varies by outcome:

• Strength and power (strong evidence): supports gains in maximal strength and repeated high-intensity efforts during structured training.
• Training volume and lean mass support (moderate-to-strong evidence): by supporting higher-quality training sessions, creatine can indirectly support lean-mass gains over a training block.
• Vegetarians and older adults (moderate evidence): people with lower baseline muscle creatine, including many vegetarians, and older adults, are studied populations that may see meaningful benefit.
• Cognition and other outcomes (early, non-therapeutic evidence): some research explores creatine and cognitive performance, but this is an emerging area — we don't make health or clinical claims here, and neither should any label you read.

Creatine has limited demonstrated value for pure, steady-state endurance events, and the added intracellular water it draws into muscle can add a small amount of body mass — worth knowing if you compete in a weight-class or endurance sport.

Dosage

The standard, evidence-based maintenance dose is 3–5 g of creatine monohydrate per day. Take it any time of day, including on rest days — daily consistency matters more than precise timing. Pairing creatine with fast-digesting carbohydrates can, in some protocols, support uptake, but it isn't required; consistent daily use at 3–5 g works well on its own.

Loading

Loading is optional, not required. A loading phase — around 20 g/day split into smaller doses across 5–7 days — saturates muscle creatine stores faster. Skipping loading and taking 3–5 g/day consistently reaches a similar saturation point in around 3–4 or more weeks. Choose loading if you want faster saturation; choose a steady daily dose if you'd rather keep it simple — the end result is comparable.

Forms Compared

Creatine monohydrate has the deepest evidence base of any form and is the default recommendation. Other forms — including HCL (hydrochloride), micronized, and buffered creatine — are marketed on solubility or convenience. HCL is more water-soluble than monohydrate, but there is no independent evidence that HCL is scientifically superior for raising muscle creatine, and no established, validated case for a lower effective dose versus monohydrate. Superiority marketing claims for any non-monohydrate form deserve scrutiny until independently substantiated.

How to Choose

Start with monohydrate — it has the strongest evidence base and is usually the best value per gram. From there, pick the format that fits how you'll actually use it, consistently, every day:

• Powder for the lowest cost per serve and full dose control.
• Capsules if you'd rather skip mixing and want a consistent, pre-measured dose.
• HCL if you specifically prefer its solubility — not because it's proven superior.
• Whatever format you pick, consistency beats perfection: the product you'll actually take every day is the right one.

New Zealand shoppers can buy any of these formats in-store or online at Xplosiv, with click & collect available across our stores nationwide.

Safety & Myths

Creatine is one of the most-studied supplements in sports nutrition, and several common claims about it don't hold up against the evidence:

• "You need to cycle off creatine." Not true for healthy adults. Continuous daily use at 3–5 g is the standard evidence-based approach — cycling off periodically is not required for safety or effectiveness.
• "Creatine damages your kidneys." At standard recommended doses, creatine has not been shown to impair kidney function in healthy people. Creatine supplementation can raise blood creatinine, a marker some tests use to estimate kidney function, but that rise reflects how creatinine is produced (a normal by-product of muscle creatine), not kidney injury. If you have an existing kidney condition, talk to a healthcare professional before starting any supplement, creatine included.
• "Creatine causes hair loss." There is no established causal link between creatine and hair loss. A 2025 randomised controlled trial found no significant difference in hair-related outcomes between a creatine group and a placebo group over 12 weeks. The evidence here is still developing, so we won't call it impossible — but there's currently no solid evidence that it happens.
• "Creatine causes cramping or dehydration." Research does not support creatine as a cause of cramping or dehydration at recommended doses.
• "You must take it with carbs, or at a specific time." Neither is required — daily consistency matters far more than timing or pairing with carbohydrate.

NZ Context

Xplosiv operates physical stores across New Zealand alongside xplosiv.nz, with click & collect available so you can grab creatine same-day rather than waiting on a courier. If you follow a vegetarian diet — common among New Zealand gym-goers cutting back on red meat — you likely start with lower baseline muscle creatine than a meat-eater, and studies suggest that profile may see a larger relative benefit from supplementing (moderate evidence).

If you compete under a sporting body's anti-doping code, creatine itself is not a banned category, but supplement contamination is a real, general risk across the industry — always check your sport's current anti-doping advice and prefer independently tested products where that matters to you.

Frequently Asked Questions

Related Reading

Sources

• 01Kreider RB, et al. "International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine." J Int Soc Sports Nutr, 2017. pubmed.ncbi.nlm.nih.gov/28615996
• 02Antonio J, et al. "Common questions and misconceptions about creatine supplementation: what does the scientific evidence really show?" J Int Soc Sports Nutr, 2021. pubmed.ncbi.nlm.nih.gov/33557850
• 03National Institutes of Health, Office of Dietary Supplements. "Exercise and Athletic Performance — Health Professional Fact Sheet" (creatine section). ods.od.nih.gov
• 04Lak M, et al. "Does creatine cause hair loss? A 12-week randomized controlled trial." J Int Soc Sports Nutr, 2025. pubmed.ncbi.nlm.nih.gov/40265319