Innermost The Power Booster Creatine Monohydrate

£12.95 (60 servings), liveinnermost.com

The go-to supplement for athletes and gym-goers looking to increase power, strength and speed, creatine monohydrate is creatine with one molecule of water attached to it. This form of creatine has been around – and extensively studied – for decades, making it one of the few supplements that’s genuinely tried, tested and proven (notably to improve recovery and energy mid-workout). Innermost’s offering is a neutraltasting powder that mixes well.