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Sleep Blend
A carefully selected combination of magnesium glycinate, L-tryptophan, ashwagandha, and L-theanine to complement your nighttime routine.
Free delivery on subscriptions
Free sample each month
Pause or cancel anytime
365 day free returns
Back in stock: 30/10/2025
Buy now, pay later from £15.12/mo
Key Benefits
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Contains L-tryptophan, ashwagandha, and L-theanine.
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With magnesium to support psychological and nervous system function.
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Taken as part of your nighttime routine.
Deep sleep is when your body restores and recharges. Sleep Blend combines magnesium glycinate, L-tryptophan, ashwagandha, and L-theanine. Magnesium contributes to normal psychological function and the normal functioning of the nervous system. Each ingredient is carefully selected to complement your evening routine and support your body as you prepare for rest.
Founded by human biologist and longevity expert Gary Brecka, The Ultimate Human helps people take control of their biology and unlock peak performance through science-backed tools and education. With over two decades of experience analysing human biomarkers, Gary combines scientific precision with a personal approach to wellness. The brand sits at the intersection of science and wellbeing, offering research-driven products and practical insights for everyday life. Whether starting a health journey or refining routines, The Ultimate Human provides the knowledge and tools to elevate wellness and unlock true potential. At its heart, it’s about giving people the confidence to become the best versions of themselves — inside and out.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Sleep Blend
A carefully selected combination of magnesium glycinate, L-tryptophan, ashwagandha, and L-theanine to complement your nighttime routine.
Free delivery on subscriptions
Free sample each month
Pause or cancel anytime
365 day free returns
Back in stock: 30/10/2025
Buy now, pay later from £15.12/mo
Key Benefits
-
Contains L-tryptophan, ashwagandha, and L-theanine.
-
With magnesium to support psychological and nervous system function.
-
Taken as part of your nighttime routine.
Deep sleep is when your body restores and recharges. Sleep Blend combines magnesium glycinate, L-tryptophan, ashwagandha, and L-theanine. Magnesium contributes to normal psychological function and the normal functioning of the nervous system. Each ingredient is carefully selected to complement your evening routine and support your body as you prepare for rest.
Founded by human biologist and longevity expert Gary Brecka, The Ultimate Human helps people take control of their biology and unlock peak performance through science-backed tools and education. With over two decades of experience analysing human biomarkers, Gary combines scientific precision with a personal approach to wellness. The brand sits at the intersection of science and wellbeing, offering research-driven products and practical insights for everyday life. Whether starting a health journey or refining routines, The Ultimate Human provides the knowledge and tools to elevate wellness and unlock true potential. At its heart, it’s about giving people the confidence to become the best versions of themselves — inside and out.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
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Frequently asked questions
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
The Healf Source offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.
We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.
Healf Curation Process™
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.
The Discovery
Expert Validation
Community Testing
The Discovery
Expert Validation