ProSupps Mr. Hyde Signature

Mr. Hyde has been one of the best-known high-stimulant pre-workouts for over a decade, and Signature is the current version of it. The reputation is for intensity rather than subtlety — it is aimed squarely at people who want to feel a pre-workout working.

Why choose it

• High-stimulant pre-workout with a long-standing reputation
• Contains beta-alanine — see the label for amounts per serving
• Other active ingredients alongside the caffeine — see the label
• 300g tub, plus single-serving sachets to try first
• Four flavours

How to use

Start with half a scoop to assess tolerance. Mix with 300ml of cold water 20–30 minutes before training. Do not exceed one scoop in 24 hours, and avoid within six hours of bedtime.

Contains a high level of caffeine. Not suitable for children, or people sensitive to caffeine, pregnant or breastfeeding.