HR Labs Defib V4
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HR Labs Defib V4

£34.99

Hr Labs Defib is a high-stimulant pre-workout delivering powerful energy, endurance, and focus with clinically backed ingredients designed for experienced athletes seeking peak performance.

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  • Order before 3:00pm for same day processing

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Product Description:

Product Description:

HR Labs Defib V4

Hr Labs Defib – Advanced High-Stim Pre-Workout

What is Hr Labs Defib?

Hr Labs Defib is a high-performance pre-workout supplement formulated for experienced users who want maximum energy, focus, and endurance during intense training sessions.

Key features:

  • High-stimulant formula for advanced users
  • Designed to enhance energy, focus, and endurance
  • Clinically supported ingredient profile
  • Flexible dosing (1–2 scoops depending on tolerance)
  • 40 servings (1 scoop) or 20 servings (2 scoops) per tub

Why should I use Hr Labs Defib?

If your current pre-workout no longer delivers the intensity you need, Defib is designed to take your training to the next level. It combines performance-enhancing compounds and nootropics to support both physical output and mental drive.

You may benefit from Defib if you want:

  • Explosive energy for demanding workouts
  • Improved muscular endurance and reduced fatigue
  • Enhanced mental focus and motivation
  • Better pumps and workout performance

This formula is particularly suited to experienced gym-goers and stimulant-tolerant users looking for a stronger, more effective pre-workout.

View our full range of HR Labs products.

Nutritional Information

Serving Size: 1 scoop (11g) – Servings Per Container: 40/20

Ingredient Amount Per Serving %DV
Citrulline Malate 2:1 4000 mg **
Beta Alanine 1600 mg **
Betaine Anhydrous 1250 mg **
Taurine 750 mg **
Acetyl L-Carnitine 500 mg **
Juniper Berry Extract 250 mg **
Citicoline 250 mg **
Peptipump® 250 mg **
Caffeine Anhydrous 200 mg **
Sabroxy® 75 mg **
Salidropure™ (Pure Salidroside) 15 mg **
Astragin® 15 mg **

How should I use Hr Labs Defib?

  • Mix 1 scoop (11g) with 250–350ml of water
  • Take 20–30 minutes before training

Advanced users:

  • Take 2 scoops (22g) for full clinical dosing

Important guidelines:

  • Do not exceed 2 servings in 24 hours
  • Avoid use within 5 hours of sleep due to stimulant content
  • Assess your tolerance before increasing dosage

What ingredients are in Hr Labs Defib & how can they help me?

Citrulline Malate (4000mg)
Supports nitric oxide production, improving blood flow, muscle pumps, and endurance.

Beta Alanine (1600mg)
Helps buffer lactic acid, delaying fatigue and allowing longer, more intense workouts.

Betaine Anhydrous (1250mg)
Supports strength, power output, and muscle endurance.

Taurine (750mg)
Aids hydration, endurance, and muscle function.

Acetyl L-Carnitine (500mg)
Supports energy metabolism and cognitive performance.

Juniper Berry Extract (250mg)
May support hydration balance and nutrient delivery.

Citicoline (250mg)
Enhances focus, mental clarity, and mind-muscle connection.

Peptipump® (250mg)
A peptide-based ingredient designed to enhance muscle pumps and vascularity.

Caffeine Anhydrous (200mg)
Provides fast-acting energy, alertness, and workout intensity.

Sabroxy® (75mg)
A natural nootropic that supports focus, mood, and motivation.

Salidropure™ (15mg)
A concentrated form of salidroside that may help reduce fatigue and improve resilience to stress.

Astragin® (15mg)
Enhances absorption of nutrients, improving ingredient effectiveness.

Allergen Information:

Suitable for most dietary preferences and restrictions. However, if you have known allergies or specific dietary concerns, it’s advisable to consult with a healthcare professional before incorporating this product into your fitness routine. Produced in a facility which processes products containing nuts, milk, gluten, egg, soya, shell fish and peanuts.

Warnings:

  • Stick to the recommended serving size, and avoid exceeding it.
  • Intended for individuals aged 18 and older.
  • Discontinue use and seek advice from a healthcare professional if you experience any adverse reactions.
  • Not recommended for pregnant or nursing mothers.
  • Keep out of reach of children.

UK & Ireland Shipping

Free UK Mainland delivery on all orders over £60.00.

Orders under £60.00 will be charged at a flat rate of £3.98.

International Shipping

International deliveries are charged a variable rate depending on destination, order weight and courier service used.

Shipping times for international deliveries also varies depending on destination country and courier service used.

Please check your cart before checkout to see availability and pricing.

View our Delivery Information page for more details.

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