Rule One Roar, Peach Mango - 315 grams
Rule One Roar, Blue Razz - 300 grams
Rule One Roar, Lemon Lime - 270 grams
Rule One Roar, Wild Grape - 285 grams
Rule One Roar, Fruit Punch - 315 grams
Rule One Roar, Peach Mango - 315 grams
Rule One Roar, Blue Razz - 300 grams
Rule One Roar, Lemon Lime - 270 grams
Rule One Roar, Wild Grape - 285 grams
Rule One Roar, Fruit Punch - 315 grams
"Very quick delivery. Used 3 times, each order arrived the next day before 12:00"
Hugo Dover
"Reliable & original products, with fast next day delivery. Have been using Welzo for over a year now."
Elina Goulliard
"Welzo is great, lots of support from customer service who are easy to get a hold of and quick delivery."
Elizabeth Moore

Product Description

Rule One Roar pre-workout powers your training with energy and stamina to push harder, and keeping hydration for longer sessions. L-Citrulline boosts circulation and stamina, beta-alanine helps buffer fatigue, and caffeine fuels focus quickly and easily for crisp training sessions. Built on a heritage of quality and total label clarity, this formula brings premium science to your workouts.

Benefits & Features:

  • Picks up energy for hard workouts.
  • Supports endurance and delays fatigue with L-Citrulline and Beta-Alanine, helping you push through tougher sessions.
  • Creatine helps regenerate ATP for more power, strength and lasting sets.
  • Caffeine fuels focus and energy, lifting motivation and performance during training, while electrolytes help you stay hydrated and cramp-free from warm ups to cool downs.
  • Electrolyte blend keeps you hydrated during long sessions, whilst maintaining electrolyte balance to prevent cramping and support peak performance.

Rule One Roar sits in the heart of our premium pre-workout range, built on full label transparency and clinically dosed blends. The star ingredients include L-Citrulline for better blood flow, CarnoSyn Beta-Alanine for buffering, Creatine Monohydrate for ATP support, and caffeine for energy. An electrolyte blend keeps hydration on point, while vitamins C, B6 and B12 support energy metabolism. This lifestyle line even nudges into men's fragrance conversations—think baccarat rouge 540—showing our brand's crossover appeal to performance and culture. Not magic, just solid results.

Ingredients/Specifications

Calories, Total Carbohydrate, Vitamin C (as Ascorbic Acid), Vitamin B6 (as pyridoxine HCl), Vitamin B12 (as cyanocobalamin), Chloride, Sodium, Potassium, L-Citrulline, CarnoSyn Beta-Alanine, Creatine Monohydrate, Taurine, L-Arginine, Electrolyte Blend (Sodium Chloride, Potassium Chloride, Potassium Citrate, Magnesium Oxide), Caffeine (from Green Coffee Bean Extract, Tea Leaf Extract), L-Tyrosine, Betaine Anhydrous

  • GTIN: 196671005199
  • Manufacturer: Rule One
  • Size: Wild Grape - 285 grams
  • Categories: Rule One
  • Best buy: 6 - 24 months+

UK Delivery & Returns

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

How to use

Mix one (1) scoop of Roar with 8-12 oz of cold water and consume 30-45 minutes before workouts. Store in a cool, dry place away from direct sunlight. WARNING: Keep out of reach of children. This product is intended for healthy adults only. Do not use if you are under 18, pregnant, trying to get pregnant, or nursing. Consult your physician before use if you are taking any medications or have any medical condition. Discontinue use two weeks prior to surgery. Each serving contains approximately 175 mg of caffeine. Do not combine with alcohol or other caffeine-containing products, and do not exceed two servings daily. Too much caffeine may cause nervousness, irritability, sleeplessness, and occasionally rapid heartbeat. Beta-alanine may cause a temporary tingling or flushing sensation. Exercise may increase your fluid needs, so drink lots of water to stay well-hydrated. Discontinue use if you experience any adverse effects or unusual symptoms.

Please consult the product packaging for accurate instructions on how to use the product.

Nutritional Information

  Amount
Per 100g
Amount
Per Serving
%RI*
Calories 996.8571 kJ / 238.0952 kcal 104.67 kJ / 25 kcal
Total Carbohydrate 9.5238 g 1 g 1%
Vitamin C (as Ascorbic Acid) 2380.9524 mg 250 mg 278%
Vitamin B6 (as pyridoxine HCl) 28.5714 mg 3 mg 176%
Vitamin B12 (as cyanocobalamin) 333.3333 µg 35 µg 1458%
Chloride 1761.9048 mg 185 mg 8%
Sodium 761.9048 mg 80 mg 3%
Potassium 904.7619 mg 95 mg 2%
L-Citrulline 19.0476 g 2 g
CarnoSyn Beta-Alanine 11.4286 g 1.2 g
Creatine Monohydrate 9.5238 g 1 g
Taurine 9.5238 g 1 g
L-Arginine 4761.9048 mg 500 mg
Electrolyte Blend (Sodium Chloride, Potassium Chloride, Potassium Citrate, Magnesium Oxide) 3333.3333 mg 350 mg
Caffeine (from Green Coffee Bean Extract, Tea Leaf Extract) 1666.6667 mg 175 mg
L-Tyrosine 1142.8571 mg 120 mg
Betaine Anhydrous 952.381 mg 100 mg

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Vitamin C (Ascorbic Acid)

Vitamin C is a water-soluble vitamin vitamin, involved in everyday bodily functions that support overall health.

This formulation includes Vitamin C as part of its ingredient mix to help support the intended nutrition profile.

What Does Vitamin C Do?

Scientific research shows that Vitamin C helps with energy, metabolism and immune function during strenuous exercise.

Plus, having Vitamin C with other nutrients in this product adds to the wider support you get from the B-vitamins and the vitamin C family [which matters for daily wellness].

This product isn't meant to diagnose, treat, cure, or prevent any disease.

Why it's Welzo

Rule One Roar represents a brand with a laid out formulation mindset centred on energy and endurance and hydration delivered in a transparent, clinically dosed way and let’s be honest, that’s the kind of honesty we want to see in supplements because it matters.

This approach aligns with our focus on ingredients that work synergistically for performance and focus, and which also keeps full label transparency for trust and clarity. It’s why we chose Rule One for its clear emphasis on combining evidence-backed components in balanced doses, a mindset that mirrors our own product development ethos. The blend includes energy activation (caffeine) and endurance support (citrulline, beta-alanine, creatine), mental focus (tyrosine) and hydration (electrolytes) all backed by a collaborative formulation approach that our team reviews with care. This is reinforced by our commitment to verify ingredient quality through our internal standards and partner checks, ensuring consistency and safety for Welzo customers. our expert team of doctors, nurses, and nutritionists and how we verify ingredient quality actively inform this selection.

Rule One Roar is particularly well suited for this pre-workout category, offering a comprehensive profile that supports training sessions while staying aligned with Welzo’s regulatory and quality expectations.

Rule One Roar

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Rule One Roar pre-workout powers your training with energy and stamina to push harder, and keeping hydration for longer sessions.
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Product Description

Rule One Roar pre-workout powers your training with energy and stamina to push harder, and keeping hydration for longer sessions. L-Citrulline boosts circulation and stamina, beta-alanine helps buffer fatigue, and caffeine fuels focus quickly and easily for crisp training sessions. Built on a heritage of quality and total label clarity, this formula brings premium science to your workouts.

Benefits & Features:

  • Picks up energy for hard workouts.
  • Supports endurance and delays fatigue with L-Citrulline and Beta-Alanine, helping you push through tougher sessions.
  • Creatine helps regenerate ATP for more power, strength and lasting sets.
  • Caffeine fuels focus and energy, lifting motivation and performance during training, while electrolytes help you stay hydrated and cramp-free from warm ups to cool downs.
  • Electrolyte blend keeps you hydrated during long sessions, whilst maintaining electrolyte balance to prevent cramping and support peak performance.

Rule One Roar sits in the heart of our premium pre-workout range, built on full label transparency and clinically dosed blends. The star ingredients include L-Citrulline for better blood flow, CarnoSyn Beta-Alanine for buffering, Creatine Monohydrate for ATP support, and caffeine for energy. An electrolyte blend keeps hydration on point, while vitamins C, B6 and B12 support energy metabolism. This lifestyle line even nudges into men's fragrance conversations—think baccarat rouge 540—showing our brand's crossover appeal to performance and culture. Not magic, just solid results.

Ingredients/Specifications

Calories, Total Carbohydrate, Vitamin C (as Ascorbic Acid), Vitamin B6 (as pyridoxine HCl), Vitamin B12 (as cyanocobalamin), Chloride, Sodium, Potassium, L-Citrulline, CarnoSyn Beta-Alanine, Creatine Monohydrate, Taurine, L-Arginine, Electrolyte Blend (Sodium Chloride, Potassium Chloride, Potassium Citrate, Magnesium Oxide), Caffeine (from Green Coffee Bean Extract, Tea Leaf Extract), L-Tyrosine, Betaine Anhydrous

  • GTIN: 196671005199
  • Manufacturer: Rule One
  • Size: Wild Grape - 285 grams
  • Categories: Rule One
  • Best buy: 6 - 24 months+

UK Delivery & Returns

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

How to use

Mix one (1) scoop of Roar with 8-12 oz of cold water and consume 30-45 minutes before workouts. Store in a cool, dry place away from direct sunlight. WARNING: Keep out of reach of children. This product is intended for healthy adults only. Do not use if you are under 18, pregnant, trying to get pregnant, or nursing. Consult your physician before use if you are taking any medications or have any medical condition. Discontinue use two weeks prior to surgery. Each serving contains approximately 175 mg of caffeine. Do not combine with alcohol or other caffeine-containing products, and do not exceed two servings daily. Too much caffeine may cause nervousness, irritability, sleeplessness, and occasionally rapid heartbeat. Beta-alanine may cause a temporary tingling or flushing sensation. Exercise may increase your fluid needs, so drink lots of water to stay well-hydrated. Discontinue use if you experience any adverse effects or unusual symptoms.

Please consult the product packaging for accurate instructions on how to use the product.

Nutritional Information

  Amount
Per 100g
Amount
Per Serving
%RI*
Calories 996.8571 kJ / 238.0952 kcal 104.67 kJ / 25 kcal
Total Carbohydrate 9.5238 g 1 g 1%
Vitamin C (as Ascorbic Acid) 2380.9524 mg 250 mg 278%
Vitamin B6 (as pyridoxine HCl) 28.5714 mg 3 mg 176%
Vitamin B12 (as cyanocobalamin) 333.3333 µg 35 µg 1458%
Chloride 1761.9048 mg 185 mg 8%
Sodium 761.9048 mg 80 mg 3%
Potassium 904.7619 mg 95 mg 2%
L-Citrulline 19.0476 g 2 g
CarnoSyn Beta-Alanine 11.4286 g 1.2 g
Creatine Monohydrate 9.5238 g 1 g
Taurine 9.5238 g 1 g
L-Arginine 4761.9048 mg 500 mg
Electrolyte Blend (Sodium Chloride, Potassium Chloride, Potassium Citrate, Magnesium Oxide) 3333.3333 mg 350 mg
Caffeine (from Green Coffee Bean Extract, Tea Leaf Extract) 1666.6667 mg 175 mg
L-Tyrosine 1142.8571 mg 120 mg
Betaine Anhydrous 952.381 mg 100 mg

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Vitamin C (Ascorbic Acid)

Vitamin C is a water-soluble vitamin vitamin, involved in everyday bodily functions that support overall health.

This formulation includes Vitamin C as part of its ingredient mix to help support the intended nutrition profile.

What Does Vitamin C Do?

Scientific research shows that Vitamin C helps with energy, metabolism and immune function during strenuous exercise.

Plus, having Vitamin C with other nutrients in this product adds to the wider support you get from the B-vitamins and the vitamin C family [which matters for daily wellness].

This product isn't meant to diagnose, treat, cure, or prevent any disease.

Why it's Welzo

Rule One Roar represents a brand with a laid out formulation mindset centred on energy and endurance and hydration delivered in a transparent, clinically dosed way and let’s be honest, that’s the kind of honesty we want to see in supplements because it matters.

This approach aligns with our focus on ingredients that work synergistically for performance and focus, and which also keeps full label transparency for trust and clarity. It’s why we chose Rule One for its clear emphasis on combining evidence-backed components in balanced doses, a mindset that mirrors our own product development ethos. The blend includes energy activation (caffeine) and endurance support (citrulline, beta-alanine, creatine), mental focus (tyrosine) and hydration (electrolytes) all backed by a collaborative formulation approach that our team reviews with care. This is reinforced by our commitment to verify ingredient quality through our internal standards and partner checks, ensuring consistency and safety for Welzo customers. our expert team of doctors, nurses, and nutritionists and how we verify ingredient quality actively inform this selection.

Rule One Roar is particularly well suited for this pre-workout category, offering a comprehensive profile that supports training sessions while staying aligned with Welzo’s regulatory and quality expectations.

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Disclaimer

Content team: Dr Sameer Nakedar

Role: Chief Medical Officer

MBBS (London, UK), MRCGP, PGCert

Content team: Paola Drexlar

Role: Medical Content Writer, UK

BA (Hons) Journalism