Murdered Out Insidious Pre-Workout is a potent stimulant-packed pre-workout blend aimed at boosting workout energy, focus, pumps and endurance for serious training. The mix centres on L-Citrulline Malate, caffeine and beta alanine to back energy, blood flow, and fatigue resistance. It’s crafted by a brand devoted to quality, with strict standards and a clear focus on performance.

Available Sizes & Variants:

463g tub - Great value for a single tub that lasts through many sessions.

Benefits & Features:

• Powerful energy and focus fuel intense training sessions.
• boosted blood flow and pumps from the arginine and citrulline malate blend.
• Beta alanine and beetroot support endurance and fatigue resistance across tough sets.
• Mental sharpness comes from acetyl L-tyrosine and caffeine tuned for focus during training.
• Supports recovery and absorption, with taurine and bioperine helping you feel ready for the next session.

Insidious is part of a brand known for quality and performance. The formula blends a potent energy stack with ingredients chosen for endurance and focus, designed for regular gym use. Athletes appreciate the clean mixability and straightforward flavour, while the commitment to potency means you feel the boost when you need it most. This is the kind of pre-workout that fits into demanding training schedules and long days in the gym.

1 Scoop (18.5g) Amount Per Serving: Protein: 0g Carbohydrates: 0.7g Fat: 0g Salt: 0g L- Citrulline DL Malate 2:1, L- Arginine, Beta Alanine, Betaine Anhydrous, Acidity Regulators (Malic Acid, Citric Acid), Taurine (Anti-caking agent, Silicon dioxide), N-Acetyl L-Tyrosine, Flavouring, Beta Vulgaris (Beetroot Extract), Caffeine Anhydrous, DL Choline Dihydrogen Citrate, L-Theanine, Sweeteners (Acesulfame K, Sucralose), Bioperine (Black Pepper Extract).

• GTIN: 5065016529056
• Manufacturer: Murdered Out
• Size: RedRum
• Categories: Best SellersBodybuilding SupplementsNew ArrivalsNew In Supplements & VitaminsSubscribe & Save Products
• 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.

For best results, consume this 58-calorie serving as part of a balanced meal. Contains minimal carbohydrates (1.06g) with trace sugars (0.24g). Zero fat content makes it ideal for low-fat diets. Watch salt intake, with only 0.02g per serving. Provides 245 kJ of energy. Minimal protein (0.03g) - consider pairing with protein-rich foods.

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

The Active Ingredient Is: L-Citrulline Malate (2:1)

L-Citrulline Malate is a non-essential amino acid derivative that supports normal functions involved in energy production and vascular health during exercise. This form combines citrulline with malate to help sustain performance during demanding activity.

This ingredient is commonly used to support nitric oxide production and blood flow, which can contribute to improved exercise capacity and endurance in high-intensity training contexts.

What Does L-Citrulline Malate Do?

L-Citrulline Malate supports the body’s normal nitric oxide–driven blood flow, aiding metabolic processes that sustain performance during intense workouts. It is associated with enhanced endurance and reduced fatigue in training settings.

This information reflects evidence-based understanding of how nitric oxide pathways contribute to vascular function and exercise tolerance.

*This product is not intended to diagnose, treat, cure, or prevent any disease.

Carbohydrates:0.7g

Why Murdered Out Insidious Pre-Workout is Welzo Selected. This brand stands out for its performance‑focused approach and a high‑potency ingredient profile that aligns with Welzo’s rigorous selection standards. Our expert team evaluated the brand through Welzo’s comprehensive vetting process, prioritising strong formulation integrity and the ability to support demanding training. This brand’s commitment to delivering a robust, multifunction blend resonates with our goal of pairing effective nutrients with clear consumer value. We selected Murdered Out for its evidence‑aligned ingredient stack, which includes citrulline malate, beta alanine, caffeine and supportive accents designed to complement intense workouts. The decision was made with input from our expert team of doctors, nurses, and nutritionists and is guided by our emphasis on the standards we enforce. This brand’s quality mindset and product fit make it a strong match for this high‑stimulation pre‑workout, ensuring consistency with Welzo’s safety and efficacy expectations.