Naughty Boy Winter Soldier Sickpump is a stimulant-free pre-workout that digs in deeper with a pump and sharper vascularity by pairing L-Citrulline with Betaine Nitrate for improved nitric oxide production, and this mix also features AmentoPump and AstraGin to help your body soak up nutrients more effectively. Naughty Boy has earned a reputation for clear, high quality formulas that prioritise real performance, not hype.

Available Sizes & Variants:

325 grams pre-workout - Stimulus-free, pump-focused edition designed for intense sessions.

Benefits & Features:

• Deepens the pump and increases muscle fullness during workouts.
• 6000 mg L-Citrulline with 2000 mg Betaine Nitrate boosts nitric oxide for better blood flow and vitamins support.
• AmentoPump supports vasodilation, potentially enhancing strength and muscle fullness without stimulants.
• Electrolyte balance with pink Himalayan salt and potassium citrate helps hydration and reduces cramps.
• AstraGin® is included to aid absorption of the other actives, potentially boosting their effects and helping you feel the benefits sooner between sessions of training.

Naughty Boy has built a reputation for pump focused formulas and clear ingredient stories. Winter Soldier Sickpump leans into bold actives like NO3-T nitrate and AmentoPump to boost nitric oxide delivery, while AstraGin enhances absorption so more of each scoop’s nutrients reach working muscles. The blend also uses Pine Bark Extract and Vitamin C to support vascular health and recovery, all within a stimulant-free frame for athletes prioritising natural supplements and probiotics.

Pink Himalayan salt, potassium citrate, vitamin C (ascorbic acid), L-citrulline (vegan fermented) 6000 mg, betaine nitrate (as NO3-T) 2000 mg, AmentoPump (Selaginella Tamariscina extract) 300 mg, pine bark (Pinus Pinaster Std 95% Proanthocyanidins) 250 mg, AstraGin (Astragalus membranaceus & Panax notoginseng) root extracts 50 mg, acidulants: malic acid, citric acid; Sweetener: sucralose, anti-caking agent: silicon dioxide, color: azorubine.

• GTIN: 658238818715
• Manufacturer: Naughty Boy
• Size: Strawberry Melon
• Categories: Naughty BoySports Supplements
• Best buy: 6 - 24 months+

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.

Mix one serving of Naughty Boy Winter Soldier - Sickpump, Strawberry Melon - 325 grams with water and consume 20-30 minutes before your workout for optimal results. Store in a cool, dry place, away from direct sunlight and moisture. Keep out of reach of children. Do not exceed the recommended daily dose. If you are pregnant, breastfeeding, taking any prescribed medication, or have any medical condition, consult a healthcare professional before use.

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

L-Citrulline is an amino acid linked to metabolic processes that boost blood flow and muscle performance.

This variant is made by fermentation and is suitable for vegan diets, delivering an absorbable source of the nutrient that participates in nitric oxide production.

What Does L-Citrulline Do?

L-Citrulline takes part in the body's nitric oxide cascade, which helps regulate blood vessel dilation and nutritional delivery to muscle groups during exercise. EFSA and associated sports nutrition research recognise its role in bolstering vascular health and exercise performance.

Dr Pérez-Guisado from the University of Granada found that higher intake can boost blood flow and muscle fullness during resistance training, reflecting its involvement in nitric oxide production and oxygen delivery.

This supplement isn't designed to diagnose, treat, cure, or prevent any disease.

Naughty Boy is known for delivering inventive, pump-focused pre-workout solutions, making it a natural partner for a stimulant-free formula like Winter Soldier Sickpump. This brand’s approach leans into targeted performance support through balanced blends crafted to boost vascularity and muscle fullness without stimulants.

Welzo’s medical team assessed Naughty Boy for its use of patented and trademarked ingredients like NO3-T and AmentoPump along with nutrient absorption support from AstraGin, to maximise ingredient delivery and potential effectiveness. This thoughtful formulation approach lines up with our commitment to transparent, science-led products. You can explore how we verify ingredient quality through our standards by visiting how we verify ingredient quality, and learn about our team’s assessment of safety and efficacy on Welzo's healthcare professionals.

Ultimately, Naughty Boy’s niche focus on pumps, hydration and recovery makes it particularly suited to this supplement, aligning perfectly with Winter Soldier Sickpump’s profile while reflecting our rigorous brand evaluation process.