- New
HR LABS DEFIB V4 Powder
DEFIB is an advanced all‑in‑one pre‑workout engineered for athletes who demand intensity, clarity and consistency. This fully dosed, transparent formula brings together research‑driven ingredients to support energy, strength and mental focus during demanding training sessions. Built for performance‑minded lifters, DEFIB delivers a powerful, reliable pre‑workout experience designed to elevate readiness and drive high‑output training from the first rep to the last.
Description
DEFIB is an advanced all‑in‑one pre‑workout formulated to deliver reliable performance support for serious athletes. This fully dosed, fully transparent blend combines key ingredients selected to help drive training intensity, focus and output. Designed for those who demand consistency, DEFIB™ provides a structured matrix aimed at supporting energy levels, strength capacity and mental readiness during demanding sessions. Athlete‑approved and built on research‑led formulation principles, it offers a comprehensive approach to pre‑workout preparation.
DEFIB is created for lifters who want a powerful, performance‑focused product that stands up to hard training and supports every rep.
Ingredients
Manufactured in a facility that processes milk, egg, gluten, soy, peanuts, nuts, celery, fish and crustacean ingredients.
Composition
| Serving Size: 10.5g-22g* | ||
| Amount Per Serving | 10.5g-11g | 21g-22g |
| Energy | 3.5 kcal | 7 kcal |
| Fat of which Saturates | 0g 0g | 0g 0g |
| Carbohydrates of which Sugars | 0.5g 0g | 1.1g 0.1g |
| Protein | 0.2g | 0.5g |
| Salt | 0.3g | 0.7g |
| Citrulline malate 2:1 | 4000mg | 8000mg |
| Beta-alanine | 1600mg | 3200mg |
| Betaine anhydrous | 1250mg | 2500mg |
| Taurine | 750mg | 1500mg |
| Acetyl-L-carnitine | 500mg | 1000mg |
| Juniper berry extract | 250mg | 500mg |
| Citicoline | 250mg | 500mg |
| PeptiPump | 250mg | 500mg |
| Caffeine anhydrous | 200mg | 400mg |
| Sabroxy | 75mg | 150mg |
| SalidroPure (pure salidroside) | 15mg | 30mg |
| AstraGin | 15mg | 30mg |
*Optional / nutritional information may vary slightly depending on flavour and serving size
Recommended Use
Warning: any information and statements provided about the product are not intended to be used to diagnose, treat, cure, or prevent any disease or health condition. Results may vary. Consult your physician prior to using this product if you are pregnant, nursing, under 18 years of age, take medication or have a medical condition. High caffeine content (200mg per serving). Immediately discontinue use and contact your physician if any adverse reactions occur. Exposure to moisture or heat may cause powder to clump or harden. Replace lid securely after use. Contents may settle during shipping. Sold by weight, not volume. Do not exceed the recommended daily dose. Dietary supplements cannot be used as a substitute of a varied diet. Store in a cool, dry place, avoid direct sunlight, humidity and high temperatures.
Delivery & Payment
We dispatch all orders same day if placed by 2pm or next working day, if placed after the cut-off. Choose from:
- Royal Mail 24 Tracked (1–2 working days),
- Royal Mail 48 Tracked (2–3 working days),
Orders over £50 qualify for free UK standard shipping. You’ll receive tracking details once your order is shipped.
We accept secure payments via:
- credit and debit cards (Visa, Mastercard, AmEx)
- bank transfers
All transactions are encrypted and processed through trusted providers. Most payments are completed instantly, though bank transfers may take longer. You’ll receive a confirmation email after successful payment.


























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