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Discover Performance Lab Flex—a daily botanical blend to help you stay active and support comfortable movement, every day.
Free sample each month
Pause or cancel anytime
365 day free returns
In stock. Next day delivery available.
Buy now, pay later from £12.25/mo with
Free UK shipping over £50, free returns.
Key Benefits
- Plant-powered support for your daily movement and flexibility.
- Formulated to help you maintain joint comfort as you move.
- Features ingredients chosen for their traditional use in supporting mobility.
Start each day with Flex and feel ready to take on whatever life brings. This expertly crafted formula combines botanicals and nutrients, designed for those who want to keep moving with ease and confidence.
Flex fits effortlessly into your routine, supporting your active lifestyle with a thoughtful blend of plant-based ingredients.
With continued use, Flex helps you stay comfortable and mobile, so you can focus on what you love.
What's inside:
CurcuWIN Turmeric: specially formulated for enhanced absorption.
Glucosamine Sulfate 2KCI (from maize): a key nutrient found in joint tissue.
Phytodroitin: a plant-based alternative to chondroitin, supporting your plant-powered routine.
OptiMSM Methylsulfonylmethane: provides sulphur, a building block of connective tissues.
AprèsFlex Boswellia Serrata: used in traditional practices to support mobility and comfort.
Performance Lab was created by the team at Opti-Nutra to raise the bar in supplement formulation. Every product is crafted with clean, clinical-grade ingredients—free from synthetics, additives, and fillers—and designed for optimal bioavailability and synergy. With a focus on scientifically backed doses, their range includes nootropics, multivitamins, and performance blends that support energy, cognition, and recovery. Performance Lab delivers minimalist, data-driven nutrition that helps you perform at your best, mentally and physically, every single day.
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.
Turmeric (Curcuma longa) - root, as CurcuWIN; Boswellia serrata - gum resin, as AprèsFlex; Glucosamine Sulfate 2KCL (from maize); Phytodroitin (mucopolysaccharide extract); Methylsulfonylmethane (MSM) as OptiMSM. Capsule: Pullulan (NutriCaps); Rice Concentrate (Nu-FLOW).. Suitable for vegans: Contains NO soy, peanut, tree nuts, or wheat. Free of gluten, caffeine and artificial additives, colours and preservatives. Non-GMO and non-irradiated.
Shipping
At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.
UK standard delivery
Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.99.
Next working day
For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.
International
International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.
Returns
If for any reason you are not satisfied with your order, we provide free 365-day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com, and we'll send you a return slip and help arrange a collection. The item you return must be sent in the same condition as received and inside the original packaging. Once received, we will notify you via email.
For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.
For best results take 2 capsules in the morning. Take a further 2 later in the day if required.
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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 Journal 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.
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