Killer Labs

Functional Coffee Syrup – Coming Soon

Science-led coffee syrups that layer clinically-inspired ingredients into your daily brew — for sharper focus, smoother energy and better performance, without changing your routine.

Killer Labs is building a new way to take your supplements: through the coffee you already drink. Each syrup is formulated to pair perfectly with your favourite roast while delivering targeted support for mind and body.

Based in London, we’re obsessing over dosing, flavour and real-world practicality — so you can upgrade your coffee ritual in seconds, without pills, powders or extra prep.

• Evidence-informed ingredients designed to support focus, mood and sustained energy.
• Zero faff: one pump into your coffee or latte, no shaker bottles or pill boxes.
• Crafted for taste first — built to complement coffee, not overpower it.
• A simple way to stack supplements into a habit you already have every day.
• Developed in London with a lab-first mindset and an eye on long-term performance.