Zac Perna built his physique on EHPlabs - IsoPept Zero whey isolate, Creatine, BeyondBCAA EAAs and OxyShred for morning energy. EHPlabs' UK site does not list IsoPept or BeyondBCAA. Here are the UK alternatives for each slot in his stack, with real prices per serve.
Kevin, founder of WheyWise
Closest match
Applied Nutrition
850g bag
The closest UK match to EHPlabs IsoPept Zero: 88g of protein per 100g and £1.26 per 25g of protein in the 1kg tub.
Buy ISO XP Whey Protein Isolate →Live price across UK retailersSee all UK alternatives in the live comparison table →
Cheapest isolate per 25g
MyProtein
780g bag
Myprotein's mainline isolate at 82g of protein per 100g, and the cheapest of the three at £1.10 per 25g of protein in the 2.5kg bag.
Buy Impact Whey Isolate Powder →Live price across UK retailersSee all UK alternatives in the live comparison table →
Bulk alternative
Bulk
2kg bag
81g of protein per 100g and £1.24 per 25g of protein in the 2.5kg bag, a few pence under ISO-XP.
Buy Pure Whey Isolate →Live price across UK retailersSee all UK alternatives in the live comparison table →Quick answer
For the core of Zac Perna's EHPlabs stack, buy Applied Nutrition ISO-XP in place of IsoPept Zero: 88g of protein per 100g and £1.26 per 25g of protein in the 1kg tub on Amazon. Pair it with plain creatine monohydrate (Myprotein Impact Creatine works out at 14p per 5g in the 1kg bag) and an EAA such as Applied Nutrition Amino Fuel at 77p a serve. EHPlabs now sells through a UK website, but WheyWise found no IsoPept or BeyondBCAA listing on it, so the UK swaps are the practical way to copy the stack, at about £62 a month for all four slots.
Zac Perna is one of the most-followed fitness creators on the EHPlabs roster, and his personal stack is the recipe a lot of UK lifters try to copy. EHPlabs now sells through a UK website, but when we searched it, two of his four products, IsoPept Zero and BeyondBCAA, were not listed. This guide pairs each slot in his stated stack with the closest UK equivalent and what it costs per serve.
Zac Perna's stated stack is EHPlabs IsoPept Zero (whey isolate), EHPlabs Creatine at 5g daily, EHPlabs BeyondBCAA, and EHPlabs OxyShred as a morning thermogenic. The closest UK alternatives are Applied Nutrition ISO-XP (88g of protein per 100g), Myprotein Impact Creatine (creatine monohydrate is creatine monohydrate, the brand premium does not change the molecule), Applied Nutrition Amino Fuel EAA (the BeyondBCAA equivalent), and Applied Nutrition ABE Pre Workout (200mg of caffeine, plus citrulline, creatine and beta-alanine). Together they cost about £62 a month at four training sessions a week.
Zac has been an EHPlabs ambassador since 2022 and shares the discount code ZAC10 on EHPlabs purchases. Across his Instagram, YouTube, and EHPlabs ambassador page, the four products that recur in his content are:
Two notes on framing. First, this is what he has stated publicly, not what we observed. Second, no supplement made the physique - the training and the nutrition did. The stack supports the work; it does not replace it.
EHPlabs sells in the UK through ehplabs.co.uk, but not all of Zac's stack is on it. Here is what buying direct looks like:
So two of the four slots have to come from somewhere else anyway. The UK shelf has whey isolate at 88g of protein per 100g, creatine monohydrate at 14p per 5g, EAA blends with the same amino spectrum as BeyondBCAA, and pre-workouts that deliver the OxyShred caffeine hit alongside performance ingredients OxyShred does not include. Every pick below has an in-stock UK listing.
The three UK isolates below all beat IsoPept Zero's roughly 78g of protein per 100g on paper, and cost between £1.10 and £1.26 per 25g of protein in their best-value bags. IsoPept Zero is a hydrolysed whey isolate with sub-1g sugar and fat and added digestive enzymes; these three are standard isolates.
| Isolate | Protein per 100g | Best-value bag | Cost per 25g protein |
|---|---|---|---|
| Myprotein Impact Whey Isolate | 82g | 2.5kg, £89.99, Amazon UK | £1.10 |
| Bulk Pure Whey Isolate | 81g | 2.5kg, £100.79, Amazon UK | £1.24 |
| Applied Nutrition ISO-XP | 88g | 1kg, £44.26, Amazon UK | £1.26 |
WheyWise price checks. Protein per 100g from each brand's label: ISO-XP 22g per 25g scoop on appliednutrition.uk, Impact Whey Isolate in Vanilla.
Applied Nutrition ISO-XP gives 22g of protein in a 25g scoop, 88g per 100g. It has the highest protein density of the three, which makes it the nearest match to IsoPept Zero's clean macros, and costs £1.26 per 25g of protein in the 1kg tub at £44.26 on Amazon UK. The 1.8kg tub is £85.95, which works out dearer at £1.36.
Closest Match
850g bag
Protein powder from Applied Nutrition. Compare prices across UK retailers.
Buy ISO XP Whey Protein Isolate →See the price on AmazonClosest Match
Pros
Cons
Protein makes up 88%
of this 25g scoop · 89 kcal total
Bulk Pure Whey Isolate contains 81g of protein per 100g and costs £1.24 per 25g of protein in the 2.5kg bag at £100.79 on Amazon UK. That is 2p under ISO-XP, for a slightly less protein-dense powder.
Bulk alternative
2kg bag
High-purity whey isolate from Bulk with 27g protein per 30g scoop. Very low fat and lactose, ideal for calorie-conscious or lactose-sensitive buyers.
or compare all UK prices →Bulk alternative
Pros
Cons
Protein makes up 81%
of this 30g scoop · 101 kcal total
Myprotein Impact Whey Isolate contains 82g of protein per 100g and is the cheapest isolate here, at £1.10 per 25g of protein in the 2.5kg bag at £89.99 on Amazon UK. Bought direct, the same size is £91.49 on myprotein.com, or £1.12. Myprotein's sales can take it lower still.
Best Value
780g bag
MyProtein Impact Whey Isolate is the volume-leader UK isolate at 76g protein per 100g. Off-sale pricing is mid-pack, but on Impact Week it becomes the cheapest credible isolate at sub-90p per 25g protein.
or compare all UK prices →Best Value
Pros
Cons
Protein makes up 82%
of this 30g scoop · 108 kcal total
Myprotein Impact Creatine costs 14p per 5g serve in the 1kg bag, and the molecule is the same whichever brand you buy. Creatine monohydrate is the most evidence-backed supplement in any lifter's stack and the one where brand premium delivers the least: 5g per day, every day, no loading required for long-term saturation.
The 1kg bag of unflavoured Impact Creatine is £27.99 on myprotein.com, which is 200 serves of 5g at 14p each. The 250g and 500g bags, at £9.99 and £15.99, are convenient sizes for trying a flavour before committing to a year's supply.
Best Value
250g bag
Budget creatine monohydrate from MyProtein. 3g per scoop, cheapest per gram during Impact Week sales. No third-party certification, but pharmaceutical-grade purity.
or compare all UK prices →Best Value
Pros
Cons
Optimum Nutrition Micronised Creatine is the big-brand option, at £15.71 for 360g on Amazon UK, or 22p per 5g serve. That is more per gram than Myprotein, but useful if you already order ON or want a smaller tub.
360g bag
Creatine from Optimum Nutrition. Compare prices across UK retailers.
Buy Micronised Creatine →See the price on AmazonPros
Cons
Applied Nutrition Amino Fuel EAA costs 77p a serve and covers the BeyondBCAA slot with a full essential amino acid profile. BeyondBCAA is a branched-chain amino acid blend with added electrolytes. Sports science has largely moved on from pure BCAAs to full EAA profiles, which include the leucine, isoleucine and valine of BCAA plus the other six essentials your body needs for muscle protein synthesis. The two UK picks below are EAA blends rather than pure BCAAs.
11g of amino acids per 13g scoop, 9g of them essential, including 3g of leucine in a 2:1:1 BCAA ratio, plus 2.5g of glutamine, according to appliednutrition.uk. The 390g tub holds 30 serves and costs £23.00 on Amazon UK, 77p a serve.
EAA pick
390g bag
Amino acid supplement from Applied Nutrition. Compare prices across UK retailers.
Buy Amino Fuel EAA →See the price on AmazonEAA pick
Pros
Cons
Myprotein Impact EAA contains all nine essential amino acids, with its BCAAs in a 4:1:1 ratio, so it is heavier on leucine than Amino Fuel. It comes in flavours including Cola, Grape, Melon and Golden Kiwi, from £12.99 for 250g on myprotein.com.
Most flavours
500g bag
MyProtein Impact EAA is the value pick in the UK EAA category. 8.5g essential aminos per serve with the BCAA 2:1:1 ratio, 20+ flavours, and Impact Week pricing under 20p per serve. The right pick when budget and flavour variety matter more than third-party certification.
or compare all UK prices →Most flavours
Pros
Cons
Applied Nutrition ABE Pre Workout costs 77p a serve in the 375g tub on Amazon UK, about the same as OxyShred Non-Stim at £44.95 for 60 serves on ehplabs.co.uk. OxyShred sits in the thermogenic fat-burner category, but its main job in Zac's stack is the morning caffeine kick before fasted cardio and weights. A dose-precise pre-workout delivers that alongside performance ingredients OxyShred does not include.
200mg of caffeine, 4g of citrulline malate, 3g of creatine monohydrate and 2g of beta-alanine in a 12.5g scoop, on the label at appliednutrition.uk. The 375g tub holds 30 serves and costs from £22.95 on Amazon UK against £27.95 direct.
Best Performance
375g bag
Pre-workout from Applied Nutrition. Compare prices across UK retailers.
Buy ABE Ultimate Pre Workout Icy Blue Raz →See the price on AmazonBest Performance
Pros
Cons
The four-slot UK stack costs about £62 a month, at one isolate shake a day, 5g of creatine a day, and one scoop each of EAA and pre-workout on four training days a week.
| Slot | UK pick and pack | Monthly use | Monthly cost |
|---|---|---|---|
| Whey isolate | Applied Nutrition ISO-XP, 1kg, £44.26 | 30 x 25g scoops | £33.20 |
| Creatine | Myprotein Impact Creatine, 1kg, £27.99 | 30 x 5g | £4.20 |
| EAA | Applied Nutrition Amino Fuel EAA, 390g, £23.00 | 16 scoops | £12.27 |
| Pre-workout | Applied Nutrition ABE, 375g, £22.95 | 16 scoops | £12.24 |
| Total | £61.91 |
Swap ISO-XP for Myprotein Impact Whey Isolate and the isolate line falls, because it is the cheapest of the three per 25g of protein. We have not put an EHPlabs total beside this one, because IsoPept and BeyondBCAA had no UK listing to price.
Three honest caveats on the swap, because the recommendations would not survive a Reddit thread without them:
Zac has historically been associated with Gymshark on the apparel side and built much of his early following through Gymshark content. His current dedicated supplement partnership is with EHPlabs (since 2022), and the discount code ZAC10 applies to EHPlabs purchases. Treat the Gymshark connection as apparel-era; the supplement stack is EHPlabs-led.
5g daily, taken consistently, no loading phase. This matches the standard maintenance dose recommended in the creatine literature. For more on dosing see how much creatine per day.
Partly. EHPlabs runs a UK website, ehplabs.co.uk, priced in pounds, with free standard shipping over £70 and a delivery fee from £6.95 below that. Its product pages quote 2 to 8 working days for standard post, and its shipping policy says import duties and taxes are not included. When we searched the UK site it listed OxyShred and Crea-8 creatine but no IsoPept or BeyondBCAA.
OxyShred is marketed as a thermogenic fat-burner. The functional driver in the formula is the caffeine, which delivers a wakefulness and perceived-exertion boost similar to a strong coffee or a dose-precise pre-workout. The thermogenic ingredients (acetyl L-carnitine, garcinia, green coffee bean) carry weak evidence for meaningful fat loss in trained adults eating in a deficit.
Zac Perna is a long-running EHPlabs ambassador and his stated stack centres on EHPlabs IsoPept Zero whey isolate, EHPlabs Creatine at 5g daily, EHPlabs BeyondBCAA (he uses essential amino acids during and post-workout), and EHPlabs OxyShred as a morning thermogenic for early cardio and lifting sessions. He shares the discount code ZAC10 on EHPlabs purchases.
From ehplabs.co.uk, EHPlabs' own UK site, which sells OxyShred at £44.95 and Crea-8 creatine from £19.99. We found no IsoPept or BeyondBCAA listing there. For those two slots, Applied Nutrition ISO-XP and Applied Nutrition Amino Fuel EAA are both on Amazon UK.
Applied Nutrition ISO-XP is the closest UK alternative to IsoPept Zero: 22g of protein in a 25g scoop (88g per 100g), at £1.26 per 25g of protein in the 1kg tub on Amazon UK. Myprotein Impact Whey Isolate is the cheapest of the alternatives at £1.10 per 25g of protein in the 2.5kg bag, and Bulk Pure Whey Isolate is £1.24.
Yes. EHPlabs sells OxyShred on its UK site, ehplabs.co.uk, at £44.95, and OxyShred Non-Stim at £44.95 for 60 serves, about 75p a serve. Applied Nutrition ABE Pre Workout costs about the same per serve, 77p in the 375g tub on Amazon UK, and gives 200mg of caffeine plus 4g of citrulline malate, 3g of creatine and 2g of beta-alanine.
Per his own content, Zac uses OxyShred first thing as the morning kick-off for fasted cardio and weights sessions. A UK alternative is a 200mg caffeine pre-workout such as Applied Nutrition ABE, with black coffee on rest days if you want to manage caffeine tolerance. The performance driver in his stack is the caffeine plus the EAAs intra-workout, not OxyShred specifically.
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