Creatine monohydrate is the single most evidence-backed supplement in the sports nutrition stack. More than 500 peer-reviewed studies show consistent gains in strength, power output, and muscle mass at a daily dose of 3 to 5 grams. The UK market offers dozens of creatine products ranging from 15 pence per 5 gram serving at the budget end to 60 pence per serving for premium Creapure-certified options. The right pick depends on three factors: how much you want to spend, whether you need third-party testing, and how sensitive you are to filler quality.
Quick picks: best UK creatine by use case
- Best budget creatine UK: MyProtein Impact Creatine. Cheapest per 5 gram dose during flash sales. No Informed Sport certification but pharmaceutical-grade monohydrate.
- Best mainstream creatine UK: Optimum Nutrition Micronised Creatine Powder. Informed Choice certified, widely stocked, excellent mixability, mid-tier pricing.
- Best premium creatine UK: MyProtein THE Creatine (Creapure). Creapure-certified at 99.99 percent purity, Informed Sport tested, the right pick for competitive athletes.
- Best creatine HCL UK: MyProtein Creatine HCL. Appropriate only for users who have failed monohydrate on digestive tolerance. Costs 2 to 3 times more than monohydrate with no performance advantage.
What actually matters when choosing creatine
Four criteria matter when ranking creatine products. Everything else on a label is marketing.
- Form. Creatine monohydrate is the standard. Every creatine comparison study published since 2005 confirms monohydrate matches or exceeds alternative forms on strength, hypertrophy, and power output. Creatine HCL is more water-soluble but no better on outcomes. Kre-alkalyn and ethyl ester have no meaningful evidence base.
- Cost per 5 gram dose. The daily saturation dose is 3 to 5 grams. Ranking by tub price hides the serving-size trade-off. Optimum Nutrition doses at 5 grams per scoop; MyProtein doses at 3 grams per scoop. Run the maths on cost per 5 gram serving to compare fairly.
- Third-party testing. Creapure certification guarantees 99.99 percent purity and Informed Sport tests for banned substances. Informed Choice tests for banned substances but not purity. A generic tub with no third-party certification may still be fine but carries no verification. Only about 8 percent of creatine products on Amazon advertise any third-party certification (PMC9761713, 2022 Amazon creatine audit).
- Micronisation. Micronised creatine mixes cleanly into water, protein shakes, or juice without clumping or settling to the bottom of the shaker. Standard monohydrate leaves visible grit. Every creatine in this guide is micronised; this criterion filters out the cheapest overseas imports.
Best budget creatine UK
MyProtein Impact Creatine is the cheapest creatine monohydrate that still meets the baseline quality threshold in the UK. During MyProtein's frequent flash sales (Impact Week, Black Friday, January New Year promotions) the 500g tub drops below £10, putting the cost per 5 gram dose under 12 pence. Full retail sits around £15, which remains competitive.
MyProtein Impact Creatine
500g bag
Budget creatine monohydrate from MyProtein. 3g per scoop, cheapest per gram during Impact Week sales. No third-party certification, but pharmaceutical-grade purity.
See cheapest price →MyProtein Impact Creatine
500g bag
Budget creatine monohydrate from MyProtein. 3g per scoop, cheapest per gram during Impact Week sales. No third-party certification, but pharmaceutical-grade purity.
See cheapest price →Quick verdict
Pros
- + Cheapest per 5g dose during MyProtein sales
- + Micronised for clean mixing
- + Pharmaceutical-grade monohydrate
- + Flavoured variants available (Vimto, Chupa Chups)
Cons
- – Only 3g per scoop below the 5g benchmark
- – No Informed Sport certification
- – Full retail price less competitive
Quick verdict
Pros
- + Cheapest per 5g dose during MyProtein sales
- + Micronised for clean mixing
- + Pharmaceutical-grade monohydrate
- + Flavoured variants available (Vimto, Chupa Chups)
Cons
- – Only 3g per scoop below the 5g benchmark
- – No Informed Sport certification
- – Full retail price less competitive
The trade-offs are real but small. MyProtein doses Impact Creatine at 3 grams per scoop, which is saturation-effective for most users but slightly below the 5 gram benchmark the research literature uses. There is no Informed Sport certification on the Impact line, though MyProtein manufactures in the UK under ISO 9001 quality control. Reddit and Trustpilot reviews consistently rate Impact Creatine as the default budget pick for recreational lifters.
Flavoured variants (Blue Raspberry, Vimto, Chupa Chups) exist for users who find unflavoured creatine unpleasant. The unflavoured version is the better pick if you add creatine to a protein shake or juice where the carrier provides flavour.
Best mainstream creatine UK
Optimum Nutrition Micronised Creatine Powder is the most consistently recommended creatine on Reddit's r/Supplements and bodybuilding forums. It delivers 5 grams of creatine monohydrate per serving, carries Informed Choice certification for banned-substance testing, and mixes cleanly in water or shakes. A 317g tub delivers 63 servings at roughly £18 to £22, putting cost per 5 gram dose at around 30 pence.
Optimum Nutrition Creatine Powder
634g bag
5g Informed Choice certified creatine monohydrate from Optimum Nutrition. The default mainstream pick: clean mixing, widely stocked, banned-substance tested.
See cheapest price →Optimum Nutrition Creatine Powder
634g bag
5g Informed Choice certified creatine monohydrate from Optimum Nutrition. The default mainstream pick: clean mixing, widely stocked, banned-substance tested.
See cheapest price →Quick verdict
Pros
- + 5g creatine monohydrate per serving
- + Informed Choice certified for banned substances
- + Mixes cleanly without gritty texture
- + Most consistently recommended on Reddit r/Supplements
Cons
- – Tub does not include a scoop
- – Premium price vs generic monohydrate
- – Unflavoured only in the standard line
Quick verdict
Pros
- + 5g creatine monohydrate per serving
- + Informed Choice certified for banned substances
- + Mixes cleanly without gritty texture
- + Most consistently recommended on Reddit r/Supplements
Cons
- – Tub does not include a scoop
- – Premium price vs generic monohydrate
- – Unflavoured only in the standard line
The Informed Choice certification is the differentiator against cheaper generic monohydrate. Informed Choice tests each batch for banned substances on the World Anti-Doping Agency prohibited list, which matters for club-level competitive athletes. It does not test for purity (DCD and DHT impurities specifically), which is the gap Creapure fills.
Optimum Nutrition is available across Amazon UK, Holland and Barrett, supermarket sports aisles, and direct from the Optimum Nutrition UK site. This ubiquity is itself a reason it stays in heavy rotation: buying creatine should not require a specialist retailer run. The Elite Series variant costs more without a meaningful spec difference, so stick with the standard Micronised Creatine Powder unless the Elite Series is on promotional discount below the standard.
Best premium creatine UK (Creapure)
MyProtein THE Creatine is the right pick for competitive athletes and users who want the highest verified purity available. It is Creapure-certified (meaning the raw creatine monohydrate is produced by AlzChem at their Trostberg facility in Germany, verified at 99.99 percent pure creatine monohydrate by HPLC testing) and carries Informed Sport certification for banned-substance testing.
MyProtein THE Creatine
500g bag
Creapure-certified creatine monohydrate from MyProtein. 99.99% purity verified by HPLC testing, Informed Sport tested. The right pick for competitive athletes.
See cheapest price →MyProtein THE Creatine
500g bag
Creapure-certified creatine monohydrate from MyProtein. 99.99% purity verified by HPLC testing, Informed Sport tested. The right pick for competitive athletes.
See cheapest price →Quick verdict
Pros
- + Creapure certified at 99.99% purity
- + Informed Sport tested for competitive athletes
- + Micronised for clean mixing
- + Reddit reports gentler digestive tolerance vs generic
Cons
- – Roughly 2x price of generic monohydrate
- – Only 3g per scoop (MyProtein house standard)
- – Premium buys testing, not extra performance
Quick verdict
Pros
- + Creapure certified at 99.99% purity
- + Informed Sport tested for competitive athletes
- + Micronised for clean mixing
- + Reddit reports gentler digestive tolerance vs generic
Cons
- – Roughly 2x price of generic monohydrate
- – Only 3g per scoop (MyProtein house standard)
- – Premium buys testing, not extra performance
The premium is real. THE Creatine retails at roughly twice the price of Impact Creatine per gram. The cost per 5 gram dose sits around 40 to 55 pence depending on tub size and sale timing. Over a year of daily 5 gram dosing that translates to an extra £30 to £50 versus Impact Creatine.
That premium buys three things: verified 99.99 percent purity (minimal DCD and DHT impurities), Informed Sport banned-substance testing, and the gentler digestive profile that Reddit users consistently report for Creapure versus generic creatine. For a user training five days a week who takes creatine daily for 20 years, the cumulative exposure difference to impurities is non-trivial even if individual-dose differences are small.
See the dedicated Creapure vs Generic Creatine Monohydrate post for the full purity data.
Best creatine HCL for tolerance-focused users
Creatine HCL is worth considering only if you have previously tried creatine monohydrate (ideally micronised) and experienced persistent GI discomfort that did not resolve. The research shows no performance advantage for HCL over monohydrate. The legitimate use case is digestive tolerance: some users report reduced bloating or stomach upset on HCL, which can justify the 2 to 3 times price premium if it is the difference between consistent daily dosing and stopping creatine entirely.
MyProtein Creatine HCL
100g bag
Creatine HCL from MyProtein. The only meaningful use case is digestive tolerance when monohydrate failed. Same performance outcomes, higher price.
See cheapest price →MyProtein Creatine HCL
100g bag
Creatine HCL from MyProtein. The only meaningful use case is digestive tolerance when monohydrate failed. Same performance outcomes, higher price.
See cheapest price →Quick verdict
Pros
- + 41x more water-soluble than monohydrate
- + Reddit users report better GI tolerance
- + Clean mixing in water without residue
- + Useful for users who failed on monohydrate
Cons
- – 2-3x more expensive than monohydrate
- – No performance advantage in head-to-head studies
- – Weaker research base than monohydrate
Quick verdict
Pros
- + 41x more water-soluble than monohydrate
- + Reddit users report better GI tolerance
- + Clean mixing in water without residue
- + Useful for users who failed on monohydrate
Cons
- – 2-3x more expensive than monohydrate
- – No performance advantage in head-to-head studies
- – Weaker research base than monohydrate
For anyone who tolerates monohydrate without issues, HCL is not worth the premium. See Creatine Monohydrate vs HCL for the full breakdown of the solubility argument and why it does not translate to better results.
How to take creatine for best results
The creatine protocol is simple. Three to five grams per day, taken every day, indefinitely. Timing does not matter for the saturation model; pick a time you will remember (post-workout protein shake is the most common default). Loading phases (20 to 25 grams per day for 5 to 7 days) accelerate muscle saturation by two to three weeks but are optional. Most users reach full saturation at 3 to 5 grams per day after about 3 to 4 weeks of consistent dosing.
Expected results timeline:
- Week 1 to 2: 1 to 2 kilograms of scale weight increase from intracellular water retention. This is the intended effect, not fat.
- Week 2 to 4: Small strength improvements begin appearing on heavy compound lifts. Typically 2 to 5 percent improvement at saturation.
- Week 4 to 8: Full saturation reached. Strength gains compound with training progress. Muscle fullness noticeably improved.
- Long-term: Stable performance benefit as long as daily dosing continues. Decays back to baseline over 4 to 6 weeks if stopped.
See the dedicated How Much Creatine Per Day post for the dosing deep dive.
Common questions about creatine in the UK
Is creatine legal in the UK?
Yes. Creatine monohydrate is fully legal in the UK and is not a banned substance under UK Anti-Doping Agency rules or World Anti-Doping Agency guidelines. It is legal to buy, sell, import, and consume without restriction.
Do I need to cycle creatine?
No. Creatine does not require cycling. Long-term continuous use (years or decades) is safe and well-researched. Cycling creatine produces no performance benefit and creates the 4 to 6 week re-saturation window every time you restart.
Is creatine safe for kidneys?
Yes for healthy adults. The kidney safety concern traces to a single 1998 case report that has not been replicated in the two decades since. Multi-year studies in healthy adults taking 3 to 10 grams per day show no adverse impact on kidney function markers. Users with pre-existing kidney disease should consult their GP before starting any supplement.
Can I take creatine with protein powder?
Yes. Mixing creatine into a post-workout protein shake is the most common approach in the UK and is supported by research showing the insulin response to carbs and protein may slightly improve creatine uptake into muscle. The combined shake has no negative interactions.
Do women need less creatine than men?
Slightly, on average, but not enough to change the protocol. Smaller users (under 60kg) reach saturation comfortably at 3 grams per day. Larger users may benefit from 5 grams. Gender is a weak predictor; body mass is the better one. Women benefit from creatine identically to men on strength, muscle, and cognitive performance markers.
