Natural Test Booster
D-Aspartic Acid, Fenugreek, Zinc & Vitamin D3
XL Nutrition Testosterone Booster - Discount SupplementsXL Nutrition - 90 Caps
XL Nutrition

Testosterone Booster – 90 Caps for Strength & Muscle Support

★★★★★
4.76 | 80 reviews |  30 Servings
£11.99 £19.99 £0.40/serving
– For Strength Formula Capsule routine format
Label-Led Choice Compare ingredient profile
90 Capsules Clear pack size
Select Size
Size 90 Caps
Next Day · 30-Day Returns · UK Made
Delivery & Shipping

Free Delivery

Spend £45 on this brand for Free Delivery. Order before 4pm for same-day dispatch.

Standard Delivery 2-4 Working Days
£4.99
DPD Next Day Order by 4pm Mon-Fri
£5.99
30 Day Returns

If you are not 100% satisfied with your purchase, you can return the product and get a full refund or exchange.

Payment & Security
100% Secure Checkout
Encrypted with 256-bit SSL security
Klarna
Buy Now, Pay Later
Pay in 3 interest-free instalments of £4.00. No fees.
Accepted Payment Methods
We offer flexible payment options including Buy Now, Pay Later with Klarna and Clearpay. We also accept all major UK credit & debit cards

Food supplements should not be used as a substitute for a varied and balanced diet and healthy lifestyle. If you are pregnant, breastfeeding, taking medication, or under medical supervision, consult your doctor before use. Do not exceed the recommended daily intake. Store out of reach of children.

90 Caps

XL Nutrition Testosterone Booster, D-Aspartic Acid, Fenugreek, Zinc and D3 at Budget Pricing

XL Nutrition Testosterone Booster is a daily capsule formula combining D-aspartic acid (1000mg), fenugreek extract 4:1 (533mg), magnesium oxide, vitamin C, zinc citrate (16.2mg, 162% of reference intake), boron, vitamin B6, and vitamin D3 (1200 IU, 600% of reference intake). The 90-capsule bottle provides 30 daily servings at 3 capsules per day.

D-aspartic acid is an amino acid that has been researched for its role in stimulating luteinising hormone (LH) release, which signals the testes to produce testosterone. Fenugreek is one of the most commonly used herbal extracts in testosterone support products, with several studies showing modest improvements in free testosterone and exercise performance. Zinc and vitamin D3 are essential micronutrients where deficiency is directly linked to lower testosterone levels in men.

At one of the lowest prices in the testosterone booster category, XL Testosterone Booster provides meaningful doses of established ingredients without the inflated pricing often seen in this product category. It is designed as a straightforward daily support product rather than a heavily marketed "extreme" formula.

Take 3 capsules daily with food, ideally with your first meal of the day. This product is designed for adult males who want testosterone support as part of a wider routine that includes structured training, adequate sleep and good nutrition. Results from ingredients like D-aspartic acid and fenugreek typically require 4 to 8 weeks of consistent use. It stacks with XL BUILD (KSM-66, fadogia, shilajit) for a broader natural hormone support approach.

Reviewed by the Discount Supplements nutrition team.

Key Benefits

Supports Testosterone Production

D-Aspartic Acid and Fenugreek work together to support the body's natural testosterone levels.

Promotes Muscle Growth

Zinc and Magnesium support protein synthesis and muscle recovery after training.

Boosts Energy & Vitality

B6, Vitamin C and D3 support energy metabolism and reduce tiredness and fatigue.

Immune & Bone Support

1200IU Vitamin D3 and 162% RI Zinc for immune function and bone health.

Frequently Asked Questions

Does XL Testosterone Booster actually increase testosterone?

The ingredients in XL Testosterone Booster have research supporting their role in testosterone production. D-aspartic acid has been shown to increase LH and testosterone in some studies. Zinc and vitamin D3 deficiencies are directly linked to lower testosterone, so correcting these through supplementation can restore levels. Fenugreek has shown modest improvements in free testosterone in several trials. Results vary between individuals and depend on baseline levels, diet, training and sleep quality.

Can I stack XL Testosterone Booster with BUILD?

Yes. They target testosterone support through different pathways. Testosterone Booster uses D-aspartic acid, fenugreek, zinc and vitamin D3. BUILD uses KSM-66 ashwagandha (cortisol reduction), fadogia agrestis (LH support) and shilajit. There is some overlap in the LH-support mechanism (DAA and fadogia), but the other ingredients are distinct. Using both provides broader hormonal support coverage.

How does this compare to TBJP Estrogen Control?

They target different sides of the hormonal equation. XL Testosterone Booster aims to support testosterone production using DAA, fenugreek, zinc and vitamin D3. TBJP Estrogen Control focuses on estrogen metabolism using DIM, indole-3-carbinol and broccoli extract. They can be used together for a combined approach to optimising the testosterone-to-estrogen ratio.