Size
Flavour
HR Labs Defib Advanced Pre-Workout Catalyst
Defib is HR Labs' flagship pre-workout and one of the strongest available in the UK. The brand's reputation rests on heavy dosing rather than a long ingredient list — this is not a beginner's tub.
Eight flavours, all firmly in sweet-shop territory: Fizzy Cola Bottles, Gummy Bears, Lemon Fizz Bombs, Iced Blue Slush.
Why choose it
- Heavily dosed pre-workout for experienced users
- Energy, focus and pump in one formula
- Eight confectionery-inspired flavours
- 440g tub
- A well-known name in UK hardcore supplements
How to use
Start with a quarter to half a scoop to assess tolerance — this is a strong formula and a full scoop is not the place to begin. Mix with 300–400ml of cold water 20–30 minutes before training. Do not exceed one scoop in 24 hours, and avoid within eight hours of bedtime.
Contains a high level of caffeine. Not suitable for children, or people sensitive to caffeine, pregnant or breastfeeding.
Defib is HR Labs' flagship pre-workout and one of the strongest available in the UK. The brand's reputation rests on heavy dosing rather than a long ingredient list — this is not a beginner's tub.
Eight flavours, all firmly in sweet-shop territory: Fizzy Cola Bottles, Gummy Bears, Lemon Fizz Bombs, Iced Blue Slush.
Why choose it
- Heavily dosed pre-workout for experienced users
- Energy, focus and pump in one formula
- Eight confectionery-inspired flavours
- 440g tub
- A well-known name in UK hardcore supplements
How to use
Start with a quarter to half a scoop to assess tolerance — this is a strong formula and a full scoop is not the place to begin. Mix with 300–400ml of cold water 20–30 minutes before training. Do not exceed one scoop in 24 hours, and avoid within eight hours of bedtime.
Contains a high level of caffeine. Not suitable for children, or people sensitive to caffeine, pregnant or breastfeeding.
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