Nutrex T-UP is a natural testosterone booster that helps support male hormones and athletic performance, letting you train harder and recover quicker. Its key active ingredient is D-aspartic acid at a 3000 mg daily dose, paired with zinc and B vitamins to back energy and testosterone metabolism. Nutrex is recognised as an innovator in sports nutrition, known for cutting edge product formulas and high quality ingredients.

Available Sizes & Variants:

120 capsules - standard bottle for daily use

Benefits & Features:

• Supports steady energy for workouts and daily life.
• D-aspartic acid is included at a high, clinically relevant dose.
• Vitamin B6 and B12 help energy metabolism, supporting your workouts and recovery.
• Folate (folic acid) assists cellular function to keep you focused and motivated.
• D-aspartic acid is the star ingredient, working with zinc and B vitamins to support testosterone metabolism, energy production, and overall performance in a practical daily routine.

Nutrex has earned a reputation as an innovator in sports nutrition, delivering cutting edge formulas and high quality ingredients. The formula packs 3,000 mg of D-aspartic acid per four capsules with zinc, B vitamins and folate to support energy, hormone metabolism and training performance. Nutrex's science driven approach is paired with clear ingredient lists, a testament to practical, reliable supplements athletes actually reach for. Some users pair this with magnesium glycinate for recovery, or compare options like nutrafol for men or weight loss pills to see where it fits.

D-Aspartic Acid (3000mg), Vitamin B6 (as Pyridoxine HCL), Folic Acid (as Folic Acid), Vitamin B12 (as Cyanocobalamin), Zinc (as Picolinate), Gelatin, Magnesium Stearate, Silica, Titanium Dioxide, FD&C Red 3, FD&C Red 40, FD&C Blue 1, FD&C Yellow 6.

• GTIN: 853237000165
• Manufacturer: Nutrex
• Categories: Men's Health Vitamins & SupplementsNutrexSports SupplementsTestosterone Supplements & Natural Boosters
• 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.

Take 4 capsules once per day between meals. For best results, use daily and be consistent. Store in a cool, dry place away from direct sunlight. Warnings: Not for use by persons under the age of 18. Do not use if pregnant or nursing. This product may contain ingredients that are banned by some sports organisations and/or increase the risk of false positives on a drug test. Please consult with your sport organisation or physician before taking this product.

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

The Active Ingredient Is: D-aspartic acid

D-aspartic acid is an amino acid form used to support normal hormonal processes in the body.

This ingredient is presented as a primary component in this formula and is commonly linked with supporting the body's natural hormonal metabolism.

What Does D-aspartic acid Do?

D-aspartic acid participates in stimulating the release of hormones that regulate testosterone production within the body. This mechanism is part of how the nutrient interacts with the endocrine system to support energy and performance-related functions.

Scientific context suggests this action occurs in coordination with other nutrients such as zinc and B vitamins, which support essential enzymatic and metabolic processes involved in hormone production. Dr. Topo of the University of Bologna found that this amino acid can influence hormonal cascades in research noted for its functional relevance.

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

Nutrex is our pick for T-UP because this brand is recognised as a groundbreaker in sports nutrition and known for clever formulas and top ingredients. Its well‑established reputation and long‑standing presence in bodybuilding, fitness and supplements give us confidence in reliable performance and consistency, trusted by athletes for practical, evidence‑based solutions. This partnership shows Nutrex’s pledge to ingredient transparency and a proven track record of reliable quality across products, which lines up with Welzo’s standards.

Nutrex’s sourcing and formulation philosophy emphasise robust ingredients and practical, well‑controlled products. Our team evaluates suppliers with a focus on credibility, manufacturing rigour and safety, and Nutrex meets these criteria through its industry standing and long‑standing consumer trust. This product is particularly well suited to Nutrex, given its focused D‑aspartic acid and micronutrient profile that supports its purpose as a natural testosterone‑related formulation. This collaboration was evaluated by our medical team for compliance with our rigorous testing protocols, ensuring we maintain top‑tier quality for customers.