Cellucor C4 Original Cosmic Rainbow

Vitamin C, Niacin, Vitamin B6, Folic Acid, Vitamin B12, CarnoSyn Beta-Alanine, Creatine Monohydrate, Creatine, Arginine Hydrochloride, N-acetyl-L-tyrosine, Caffeine

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched 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 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Mix one scoop of Cellucor C4 Original, Cosmic Rainbow with 6-8 ounces of water. For a stronger effect, use up to two scoops with 12-16 ounces of water. Drink 20-30 minutes before your workout for maximum energy and focus. Avoid taking close to bedtime due to caffeine content. Store in a cool, dry place, away from direct sunlight and moisture. Keep out of reach of children. This product is only intended for healthy adults, 18 years of age or older. Do not use if pregnant, nursing, or taking medications for chest pain or erectile dysfunction. Consult a healthcare professional before use if you have any medical conditions or are taking other medications. Discontinue use and consult a doctor if you experience any adverse reactions. Do not exceed the recommended daily dose.

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

*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: Beta-Alanine (CarnoSyn)

This key component is Beta-Alanine (CarnoSyn) and it’s a non essential amino acid used to help performance during high intensity exercise. This form, CarnoSyn beta-alanine, is commonly chosen for athletic performance applications.

This setup is used to help buffer muscle acidity during intense effort, helping longer endurance during tough workouts.

What Does Beta-Alanine Do?

Beta-alanine helps to maintain muscle buffering capacity, which supports sustained performance in repeated and intense efforts.

It participates in processes linked to better endurance and training tolerance during high intensity activity.

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

Cellucor brings over two decades of sport nutrition know‑how to Welzo, making it our trusted pick for this performance‑ready supplement. The manufacturer, Nutrabolt, is known for solid manufacturing practices and a long‑standing reputation in the industry, with facilities operating under GMP and select products carrying NSF Certified for Sport credentials that many athletes rely on.

Cellucor C4 Original Cosmic Rainbow is formulated with proven performance ingredients such as CarnoSyn Beta‑Alanine, Creatine Monohydrate and Caffeine Anhydrous, paired with absorption‑friendly vitamins. This brand’s commitment to transparent labelling and product integrity aligns with our high standards, and the product’s ingredient suite is supported by independent studies noted in the brand context.

This brand was evaluated by our expert team of doctors, nurses, and nutritionists for compliance with our quality assurance criteria, ensuring a robust fit for a performance‑focused pre‑workout. We selected Cellucor because of its manufacturing excellence, clear quality controls, and proven ability to deliver consistent, trusted products for athletes.