Black Pre-Workout - Peach Mango
PreSeries BULK BLACK is the epitome of a hard-hitting, clinically dosed pre-workout.
Buy now, pay later from £14.25/mo with
Key Benefits:
- Amplify muscle pumps.
- Boost strength and enhance endurance.
- Elevate mood, improve focus, and augment mental acuity for hours on end.
- Formulated for those who crave a stronger "kick" before hitting the gym.
- Contains over 17 grams of active ingredients backed by clinical research and scientific evidence.
PreSeries BLACK is the epitome of a hard-hitting, clinically dosed pre-workout. With 100% formula transparency, proven nitric oxide boosters, hard-hitting nootropics, and muscle fortifiers, this pre-workout powder goes above and beyond to meet the demands of dedicated athletes, gym-goers, and bodybuilders.
Each scoop of BLACK packs over 17 grams of active ingredients, dosed according to clinical research and scientific evidence, so you can bring the noise every time you enter the trenches. Experience intense muscle pumps, improved strength, lasting endurance, and a psychotropic rush that lifts your mood, focus, and drive for hours on end without jitters or the dreaded post-workout crash. Like all of our pre-workout formulas, BLACK contains absolutely no artificial sweeteners, flavours, food dyes, or added sugars. This is as “clean” as a clean pre-workout gets.
Transparent Labs creates science-backed supplements to optimise health and performance. Each formula delivers clinically effective doses with natural ingredients—free from artificial additives, fillers, or hidden blends. Plus, all their products undego rigorous testing so you get pure, potent, and effective supplements to support your health and fitness goals.
Founded in 2015, Transparent Labs was established by John Williams to set a new standard in supplement quality. The brand remains dedicated to research-driven, high-quality formulations with honest labelling, ensuring individuals seeking optimal wellness have access to supplements they can trust.
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.
Citrulline Malate 2:1 8,000 mg, Beta-Alanine 4,000 mg, BetaPure™ Betaine Anhydrous 2,500 mg, Taurine 1,300 mg, L-Tyrosine 1000 mg, AlphaSize® Alpha-GPC 300 mg, L-Theanine 200 mg, Caffeine Anhydrous 275 mg, Theobromine 50 mg, Infinergy™ (Dicaffeine Malate)30 mg, Astragin™ 50 mg
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.
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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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Healf Curation
Process™
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.
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The Discovery
Expert Validation
Community Testing