L-Tyrosine capsules are a focused amino acid supplement designed to support mental alertness and mood balance when you’re under stress. Each capsule delivers 500 mg of L-Tyrosine, the star ingredient that helps fuel dopamine and norepinephrine, key players in focus and stress response. Douglas Laboratories has over half a century of science-led quality, with GMP compliant facilities and a commitment to transparent, allergen-free formulations.

Available Sizes & Variants:

100 capsules - convenient daily dose for everyday use

Benefits & Features:

• Supports mental alertness on busy days.
• Contains 500 mg of L-Tyrosine per capsule to sustain focus when stress levels rise.
• Designed for daily use on an empty stomach for optimal absorption, this formula minimises common allergens and artificial additives while you focus on achieving your daily goals.
• Douglas Laboratories' 50+ years of science-led manufacturing under GMP standards give you reliable, consistent capsules, especially when paired with a vitamin d supplement as part of a broader wellness routine.
• Ideal for daily use on an empty stomach for best absorption and steady focus.

Douglas Laboratories has built its reputation on science-led formulations and rigorous quality standards for over 50 years. This L-Tyrosine supplement is produced in GMP-compliant, ISO-accredited US facilities, reflecting the brand's commitment to safety, transparency, and allergen-free ingredients. The star ingredient acts as a precursor to dopamine and norepinephrine, supporting focus and stress resilience. Our range also includes a vitamin d supplement and n acetylcysteine for broader wellness, and this product pairs well with a protein powder for muscle gain when you’re stacking nutrients.

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.

1. The supplement is commonly used as a dietary aid to support weight loss efforts.
The supplement is frequently taken as a dietary supplement to assist with losing weight.
2. It is also used to promote muscle growth and enhance athletic performance.
Additionally, it is utilized to encourage muscle development and improve athletic abilities.
3. Some people take the supplement to help with improving their cognitive function and memory.
Others use the supplement to aid in enhancing their cognitive abilities and memory function.
4. The supplement is also known to have anti-inflammatory properties and can be used to reduce pain Take 1 capsule twice daily with food or as directed by a healthcare professional.

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

1. L-Tyrosine is an essential amino acid that plays a crucial role in the production of neurotransmitters, such as dopamine, adrenaline, and noradrenaline. These neurotransmitters are responsible for regulating mood, stress response, and overall brain function.
2. L-Tyrosine also supports healthy thyroid function by aiding in the production of thyroid hormones, which are essential for metabolism, energy production, and overall hormonal balance.

The Active Ingredient Is: L-Tyrosine

L-Tyrosine is an amino acid and a building block for neurotransmitters that support focus, motivation and stress response.

This form gives L-Tyrosine as the one active ingredient in capsule form, with other ingredients used as inactive capsule materials. It is designed for daily use as part of a balanced diet and lifestyle.

What Does L-Tyrosine Do?

L-Tyrosine helps production of dopamine and norepinephrine, supporting cognitive performance under stress and mood balance according to evidence from clinical research. Dr. Jongkees of Groningen University reported improvements in working memory and task performance under stress in controlled trials.

These functions align with L-Tyrosine's role in normal brain function and stress adaptation, supported by established nutrition and neuroscience literature.

Douglas Laboratories is Welzo selected for their unwavering commitment to quality, science-led formulation, and a trusted industry heritage spanning over 50 years. This label has earned recognition as a professional, science-led supplement producer, known for quality, innovation, and GMP compliance. Their ownership by Atrium Innovations reinforces a focus on evidence-based nutritional solutions and clinical-grade standards, aligning perfectly with Welzo's expert-curated approach.

Douglas Laboratories maintains manufacturing in GMP-compliant ISO-accredited US facilities, with a clear emphasis on allergen-free formulations and the elimination of artificial additives. This robust quality framework supports consistency, safety, and transparency across their products, and the brand is commonly accessed through healthcare practitioners, underscoring its clinical credibility. For our team, this combination of heritage, precision, and practitioner endorsement distinguished Douglas Laboratories in our evaluation process. This brand was evaluated by Welzo's healthcare professionals for compliance with our supplement quality standards.

Product-specific, Douglas Laboratories L-Tyrosine 500 mg fits well with Welzo’s emphasis on purity and reliable dosing, supporting mental alertness and stress resilience claims only as supported by research. Our partnership is grounded in a rigorous vetting process led by our experienced team, and it aligns with Welzo's dedication to safe, high-quality supplements for UK customers.