High-Stim Formula
Pre-Workout
Trained by JP TBJP PrePare Pro Preworkout 400g — image 2 - 400g / Blue Slushie
TBJP

TBJP PrePare Pro Preworkout 400g

★★★★★
4.67 | 3 reviews |  20 Servings
£34.99 £49.99 £1.75/serving
High-Stim, One-Scoop Hit Caffeine-led stimulant pre-workout built for heavy training sessions. Concentrated formula - one scoop is the full dose.
Citrulline + Beta-Alanine Training-dose L-citrulline for pump and beta-alanine for muscular endurance sit alongside the stimulant base in every serving.
Smooth Mix, Bold Flavour Fine-milled powder dissolves cleanly in 250–300ml cold water. Refreshing flavour profiles built for big training sessions.
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Next day (£5.99)
17,600+ Reviews
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Est. 2005
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Food supplements should not be used as a substitute for a varied and balanced diet and healthy lifestyle. If you are pregnant, breastfeeding, taking medication, or under medical supervision, consult your doctor before use. Do not exceed the recommended daily intake. Store out of reach of children.

Blue Slushie
Pick N Mix
Sour Cherry

TBJP PrePare Pro Preworkout 400g, High-Stim Caffeine Pre-Workout

Trained By JP PrePare Pro Preworkout is a 400g full-spectrum stimulant pre-workout built for trainees who want a stim-led energy hit paired with pump and focus actives in one scoop. The formula combines caffeine and stimulant-class actives with GlycerSize for hyperhydration pump support, plus citrulline and Alpha-GPC for blood flow and cognitive performance during training.

Caffeine drives central nervous system stimulation for pre-session energy and focus. GlycerSize provides glycerol-based hyperhydration that draws additional water into muscle tissue for sustained pump quality through high-rep training. Citrulline supports vasodilation via the arginine-nitric oxide pathway. Alpha-GPC at clinical dose supports acetylcholine synthesis - the neurotransmitter involved in attention and mind-muscle connection. The combination targets stimulant energy, mechanical pump and cognitive focus simultaneously.

What separates PrePare Pro from a caffeine-only pre-workout is the dose density across pump and focus actives. Most stim-led pre-workouts under-fill the pump component to fit the caffeine into the scoop weight - PrePare Pro carries clinical-grade GlycerSize and Alpha-GPC alongside the stimulant base. The 400g tub format suits committed pre-workout users running it across an extended training block.

PrePare Pro suits competitive lifters running 4-5 sessions per week who want a complete pre-workout in one product, bodybuilders prioritising pump and mind-muscle connection during hypertrophy blocks, and trainees managing caffeine intake at the upper-stim band who want the stim layered with pump actives. Not for caffeine-sensitive users or those wanting a stim-free pump pre-workout.

Key Benefits

High-Stim, One-Scoop Hit

Caffeine-led stimulant pre-workout built for heavy training sessions. Concentrated formula - one scoop is the full dose.

Citrulline + Beta-Alanine

Training-dose L-citrulline for pump and beta-alanine for muscular endurance sit alongside the stimulant base in every serving.

Smooth Mix, Bold Flavour

Fine-milled powder dissolves cleanly in 250–300ml cold water. Refreshing flavour profiles built for big training sessions.

High-Stim Formula

Pre-Workout Authorised TBJP stockist. Free UK delivery over £40.

Frequently Asked Questions

How much caffeine is in TBJP DNFM Stim?

Each full scoop delivers a high-stim caffeine dose alongside citrulline, beta-alanine and L-tyrosine. Check the on-pack panel for the exact mg per serving on your current batch. Start with a half scoop on your first use to assess tolerance, then move to a full scoop 20–30 minutes before training. Avoid late-evening doses if you are sensitive to caffeine.

When should I take a stim pre-workout?

Take TBJP DNFM Stim 20–30 minutes before training. Mix one scoop with 250–300ml of cold water in your shaker and sip steadily on the way to the session. Use on training days only. Avoid taking it within 6 hours of bedtime to limit any impact on sleep.

Can I stack TBJP pre-workout with creatine?

Yes - pre-workout and creatine stack neatly with no clashes. Many lifters add their daily 5g creatine dose straight into their pre-workout shaker. Take the combined drink 20–30 minutes before training, and continue creatine every day (including rest days) at 3–5g total to maintain muscle creatine stores.