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Allergy Research Group ARG L-Tyrosine 500 mg – Free Form Amino Acid Supplement – 100 Capsules

$73.79

Dresses Size Chart

Dress Size Chart (Inch)
DRESSES
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 34"-35"
S 2-4 33"-34" 26"-27" 36"-37"
M 6-8 35"-36" 28"-29" 38"-39"
L 10-12 37"-39" 30"-32" 40"-42"
XL 14 40"-42" 33"-35" 43"-45"
Dress Size Chart (cm)
DRESSES
SIZE IN CM
SIZE US / CAN BUST WAIST HIPS
XS 0 78.7-81.2 60.9-63.5 86.3-88.9
S 2-4 83.8-86.3 66-68.5 91.4-93.9
M 6-8 88.9-91.4 71.1-73.6 96.5-99
L 10-12 93.9-99 76.2-81.2 101.6-106.6
XL 14 101.6-106.6 81.2-88.9 109.2-114.3

Swimwear Size Chart

Dress Size Chart (Inch)
SWIMWEAR
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 33"-34"
S 2 33"-34" 26"-27" 35"-37"
M 4 35"-36" 28"-29" 37"-38"
L 6 37"-39" 30"-32" 39"-41"
XL 8 40"-42" 33"-35" 42"-44"

Shoes Size Chart

US EURO UK AUS JAPAN CHINA
5 35-36 3 3.5 21.5 35
5.5 36 3.5 4 22 35.5
6 36-37 4 4.5 22.5 36
6.5 37 4.5 5 23 36.5
7 37-38 5 5.5 23.5 37
7.5 38 5.5 6 24 37.5
8 38-39 6 6.5 24.5 38
8.5 39 6.5 7 25 38.5
9 39-40 7 7.5 25.5 39
9.5 40 7.5 8 26 39.5
10 40-41 8 8.5 26.5 40
11 41-42 9 9.5 27.5 41

Delivery

Orders are generally processed within 1–3 business days. Standard delivery to addresses in Canada usually takes approximately 5–15 business days after dispatch.

Tracking information will be sent by email when it becomes available. Delivery times are estimates and may be affected by carrier delays, customs, severe weather or circumstances outside our control.

  • Prices are displayed in Canadian dollars.
  • Applicable taxes and shipping charges are calculated at checkout.
  • Orders may be delivered in more than one shipment.
  • Please verify your shipping address before completing your order.

Returns & Refunds

Return requests must be submitted within 30 days of delivery. Vitamins, supplements and other health-related products must be unused, unopened, sealed and returned in their original packaging.

Opened or used products cannot be returned for health and safety reasons, unless the item arrived damaged, defective or incorrect. Damaged, defective or incorrect items should be reported within 48 hours of delivery.

Customers are responsible for return shipping costs for unwanted or change-of-mind returns. A restocking fee of up to 20% may apply where permitted. Original shipping charges are non-refundable unless the return results from an error on our part.

Refunds are issued to the original payment method after the returned item has been received and inspected. Please allow up to 7 business days for the refund to be processed.

Approved Return Address
Fullfillonus #1202
1128 Lexington Ave, Bldg 4 E
Rochester, New York 14606
United States
Please contact us before sending a return. Returns sent without prior authorization may be delayed, rejected or returned to the sender.

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Email: info@cloverlight.net

Vitamin4CA.com is operated by Cloverlight LLC.

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Allergy Research Group ARG L-Tyrosine 500 mg – Free Form Amino Acid Supplement – 100 Capsules

Allergy Research Group ARG L-Tyrosine 500 mg – Free Form Amino Acid Supplement – 100 Capsules

$73.79

How L-Tyrosine Supports Your Brain and Body

When life demands more from your mind and body, L-Tyrosine can help you stay sharp and resilient. This conditionally essential amino acid serves as a building block for key neurotransmitters like dopamine, norepinephrine, and epinephrine—chemical messengers that influence mood, focus, and the body's stress response. Supplementing with free-form L-tyrosine provides a direct source that bypasses the conversion step from phenylalanine, making it readily available for neurotransmitter production.

Clinical research suggests L-Tyrosine may help maintain cognitive performance during stressful situations, sleep deprivation, or multitasking. By supporting neurotransmitter pathways, it plays a role in mood balance and motivation.* It also contributes to thyroid hormone production and supports healthy metabolism and nervous system function.*

*This product is not intended to diagnose, treat, , or prevent any disease. Consult a healthcare practitioner before use if you are pregnant, nursing, or have a medical condition.

What Is L-Tyrosine?

L-Tyrosine is a conditionally essential amino acid naturally found in protein-rich foods. While the body can synthesise it, certain conditions like stress, intense exercise, or cognitive demands can increase the need for dietary intake. Allergy Research Group ARG L-Tyrosine delivers 500 mg of pure, free-form L-tyrosine per capsule, designed for optimal absorption and utilisation.

Who May Benefit from L-Tyrosine?

L-Tyrosine supplementation can be valuable for students and professionals facing long study or work sessions, athletes seeking to maintain focus during training or competition, and individuals managing occasional stress or demanding lifestyles. Because L-Tyrosine is a precursor to dopamine, it is also popular among those seeking to support mood and motivation. Vegetarians and vegans may particularly benefit, as plant-based diets can sometimes result in lower tyrosine intake.

What Makes Allergy Research Group L-Tyrosine Stand Out?

Allergy Research Group has been a trusted name in dietary supplements for over 45 years. Their L-Tyrosine supplement is crafted with attention to purity and quality, with each batch tested for potency and contaminants. This formula is free form—meaning the amino acid is not bound to other compounds—enhancing its bioavailability. It is hypoallergenic, vegetarian, and free from gluten, dairy, soy, nuts, egg, shellfish, fish, and sesame, making it a safe choice for those with food sensitivities.

The brand is part of a family of science-backed companies including Metabolic Maintenance, MethylPro, Nutricology, and Optimox.

How to Incorporate L-Tyrosine into Your Routine

The recommended serving is one 500 mg capsule daily, or as directed by a healthcare professional. L-Tyrosine can be taken with or without food, though taking it on an empty stomach may improve absorption. For best results, consider using it during periods when mental clarity and focus are most needed, such as mornings or before demanding tasks.

As with any supplement, it is wise to consult with a healthcare provider before beginning use, especially if you are pregnant, nursing, or have a medical condition. L-Tyrosine should not be used as a substitute for a balanced diet and healthy lifestyle.

Frequently Asked Questions About L-Tyrosine

Is L-Tyrosine safe to take daily?

L-Tyrosine is generally considered safe at recommended doses. Long-term studies are limited, so it is best to use it as needed and cycle off periodically. Always follow dosage instructions and consult a healthcare professional if you have concerns.

Can L-Tyrosine be taken with other supplements?

Yes, L-Tyrosine is often combined with other amino acids or nootropics. However, be mindful of total intake from all sources. Avoid taking with high-protein meals if you want faster absorption.

Is this product vegan?

Yes, the capsules are vegetarian-friendly. The product does not contain animal-derived ingredients, making it suitable for vegans.

Does L-Tyrosine cause any side effects?

Side effects are rare but may include mild digestive discomfort or headache at high doses. Starting with one capsule daily can help assess your tolerance.

The Allergy Research Group Difference

For over four decades, Allergy Research Group has prioritized quality and efficacy. Their manufacturing processes adhere to Good Manufacturing Practises (GMPs) and they use independent laboratories for testing. This commitment to excellence ensures that each bottle of ARG L-Tyrosine delivers what it promises: a pure, potent, and reliable supplement.

Choosing a supplement from a brand with a long history of research and innovation gives you confidence in the product's safety and effectiveness. Allergy Research Group's family of brands continues to push the boundaries of nutritional science, offering solutions that are both advanced and accessible.

Important Information

Things You Need to Know

Your payment and personal information are protected using industry-standard SSL encryption, and all payments are securely processed through Shopify-approved payment providers. Prices are displayed in Canadian dollars, and applicable taxes are calculated at checkout.

Orders are generally processed within 1–3 business days. Standard delivery to Canada usually takes 5–15 business days after dispatch. Delivery times are estimates and may be affected by carrier delays, customs processing, weather conditions or other circumstances outside our control. Tracking information will be provided when available.

Return requests must be submitted within 30 days of delivery. Vitamins, supplements and health products must be unused, unopened, sealed and returned in their original packaging. Opened products cannot be returned unless they were delivered damaged, defective or incorrect.

Customers are responsible for return shipping costs for unwanted or change-of-mind returns, and a restocking fee of up to 20% may apply. Damaged, defective or incorrect items must be reported within 48 hours of delivery and may qualify for a replacement or full refund.

Refunds are issued to the original payment method after the returned item has been received and inspected. Refund processing may take up to 7 business days. Before returning any product, please contact our customer support team for return authorization. Returns sent without prior approval may be delayed or rejected.

Approved returns must be sent to:

Return Address Fullfillonus #1202
1128 Lexington Ave, Bldg 4 E
Rochester, New York 14606
United States

Refused or unclaimed shipments may only be refunded after they are returned and inspected. Original shipping charges, return shipping costs, customs fees and carrier charges may be deducted from the refund where applicable.

Vitamin4CA.com is operated by Cloverlight LLC.

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