---
product_id: 19442004
title: "Doctors Best L Tyrosine Supplement for Men & Women - L-Tyrosine 500mg Capsules, Brain Support for Adults, Amino Acid Support 500 mg, Precursor for Thyroxine Production by Thyroid - 120 Veg Caps"
brand: "doctor's best"
price: "$35.67"
currency: USD
in_stock: true
reviews_count: 12
category: "Doctor's Best"
url: https://www.desertcart.us/products/19442004-doctors-best-l-tyrosine-supplement-for-men-and-women-l
store_origin: US
region: United States of America
---

# Gluten-free formula Non-GMO certified 500 mg potency Doctors Best L Tyrosine Supplement for Men & Women - L-Tyrosine 500mg Capsules, Brain Support for Adults, Amino Acid Support 500 mg, Precursor for Thyroxine Production by Thyroid - 120 Veg Caps

**Brand:** doctor's best
**Price:** $35.67
**Availability:** ✅ In Stock

## Summary

> 🧠 Fuel Your Focus with L-Tyrosine!

## Quick Answers

- **What is this?** Doctors Best L Tyrosine Supplement for Men & Women - L-Tyrosine 500mg Capsules, Brain Support for Adults, Amino Acid Support 500 mg, Precursor for Thyroxine Production by Thyroid - 120 Veg Caps by doctor's best
- **How much does it cost?** $35.67 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/19442004-doctors-best-l-tyrosine-supplement-for-men-and-women-l)

## Best For

- doctor's best enthusiasts

## Why This Product

- Trusted doctor's best brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pure & Clean:** Enjoy peace of mind with our Non-GMO and gluten-free veggie caps.
- • **Elevate Your Mind:** Unlock cognitive potential with 500 mg of L-Tyrosine per serving.
- • **Brain Boosting Power:** Supports neurotransmitter production for enhanced mental clarity.
- • **Convenient & Effective:** 120 veggie caps for a month-long supply of brain support.
- • **Join the Wellness Revolution:** Perfect for busy professionals seeking a mental edge.

## Overview

Doctors Best L-Tyrosine offers a potent 500 mg dose in a convenient veggie cap, designed to support brain function and neurotransmitter production. This Non-GMO and gluten-free supplement is perfect for health-conscious individuals looking to enhance their cognitive performance.

## Description

Tyrosine is a conditionally essential amino acid that is a precursor to the catecholamine transmitters dopamine, epinephrine, and norepinephrine. These are vital messengers for the brain and the body’ S other nerve networks. The thyroid gland also needs Tyrosine to make the vital hormone thyroxine.

Review: Good product - I started using this supplement for energy and also to help my thyroid function. I can definitely tell you that I know when I forget to take it because I don't have the energy that I normally would have.
Review: Awesome - Gives me plenty of energy and more focus, I am taking vitamin C to help with absorption. I am very happy will order again thanks

## Features

- DOCTOR’S BEST L-TYROSINE is a conditionally essential amino acid that is a precursor to the catecholamine transmitters dopamine, epinephrine, and norepinephrine. These are vital messengers for the brain and the body’s other nerve networks. The thyroid gland also needs tyrosine to make the vital hormone thyroxine.
- Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
- COGNITIVE & MOOD SUPPORT - a dose of L-Tyrosine supports healthy brain function and the rest of the nervous system. The catecholamines are integral to central nervous system functions such as cognition, emotion, memory, movement, and regulation of glands that secrete hormones into the blood.
- HEALTHY GLANDULAR FUNCTION – may help to relieve stress. L-Tyrosine is a non-essential amino acid that is an important role in the production of the neurotransmitters dopamine and norepinephrine. Tyrosine is essential for the synthesis of thyroid hormone and epinephrine (adrenaline), L-Tyrosine also supports healthy glandular function.
- As essential dietary mineral, magnesium plays many important roles in the body which include helping cells produce metabolic energy, supporting optimum nerve function, helping muscles relax properly and maintaining a healthy heartbeat.
- During the summer months products may arrive warm but desertcart stores and ships products in accordance with manufacturers' recommendations, when provided.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00Q8N4LYE |
| Age Range Description | Adult |
| Allergen Information | Gluten Free, Non-GMO |
| Best Sellers Rank | #80,225 in Health & Household ( See Top 100 in Health & Household ) #3,295 in Blended Vitamin & Mineral Supplements #3,597 in Sales & Deals |
| Brand | Doctor's BEST |
| Brand Name | Doctor's BEST |
| Color | No Color |
| Container Type | Bottle |
| Customer Reviews | 4.4 out of 5 stars 1,076 Reviews |
| Diet Type | Gluten Free |
| Dosage Form | Capsule |
| Flavor | Unflavored |
| Global Trade Identification Number | 00753950003163 |
| Item Dimensions | 2.38 x 2.38 x 4.44 inches |
| Item Form | Capsule |
| Item Weight | 0.23 Pounds |
| Manufacturer | Doctor's Best |
| Manufacturer Part Number | DRB-00316 |
| Material Features | GMO Free |
| Model Name | Doctor's Best L-Tyrosine, Healthy Brain Function, Amino Acid, Healthy Glandular Function, Non-GMO, Gluten Free, 120 VC |
| Model Number | DRB-00316 |
| Number of Items | 1 |
| Primary Supplement Type | Magnesium |
| Product Benefits | Brain Health Support, Energy Management, Stress Relief |
| Special Ingredients | Amino Acid |
| Supplement Formulation | Individual Supplement |
| Total Servings Per Container | 120 |
| UPC | 753950003163 |
| Unit Count | 120 Count |

## Product Details

- **Brand:** Doctor's BEST
- **Flavor:** Unflavored
- **Primary Supplement Type:** Magnesium
- **Unit Count:** 120 Count
- **Item Form:** Capsule
- **Item Weight:** 3.68 ounces
- **Item dimensions L x W x H:** 2.38 x 2.38 x 4.44 inches
- **Special Ingredients:** Amino Acid
- **Diet Type:** Gluten Free
- **Product Benefits:** Brain Health Support, Energy Management, Stress Relief

## Images

![Doctors Best L Tyrosine Supplement for Men & Women - L-Tyrosine 500mg Capsules, Brain Support for Adults, Amino Acid Support 500 mg, Precursor for Thyroxine Production by Thyroid - 120 Veg Caps - Image 1](https://m.media-amazon.com/images/I/61YmvaUp7XL.jpg)
![Doctors Best L Tyrosine Supplement for Men & Women - L-Tyrosine 500mg Capsules, Brain Support for Adults, Amino Acid Support 500 mg, Precursor for Thyroxine Production by Thyroid - 120 Veg Caps - Image 2](https://m.media-amazon.com/images/I/71tol6P-FML.jpg)
![Doctors Best L Tyrosine Supplement for Men & Women - L-Tyrosine 500mg Capsules, Brain Support for Adults, Amino Acid Support 500 mg, Precursor for Thyroxine Production by Thyroid - 120 Veg Caps - Image 3](https://m.media-amazon.com/images/I/61ScRINdvZL.jpg)
![Doctors Best L Tyrosine Supplement for Men & Women - L-Tyrosine 500mg Capsules, Brain Support for Adults, Amino Acid Support 500 mg, Precursor for Thyroxine Production by Thyroid - 120 Veg Caps - Image 4](https://m.media-amazon.com/images/I/71BKe9pss5L.jpg)
![Doctors Best L Tyrosine Supplement for Men & Women - L-Tyrosine 500mg Capsules, Brain Support for Adults, Amino Acid Support 500 mg, Precursor for Thyroxine Production by Thyroid - 120 Veg Caps - Image 5](https://m.media-amazon.com/images/I/71aIqpibxaL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product
*by D***D on June 15, 2025*

I started using this supplement for energy and also to help my thyroid function. I can definitely tell you that I know when I forget to take it because I don't have the energy that I normally would have.

### ⭐⭐⭐⭐⭐ Awesome
*by F***S on January 20, 2024*

Gives me plenty of energy and more focus, I am taking vitamin C to help with absorption. I am very happy will order again thanks

### ⭐⭐⭐⭐ Effective for my ADD
*by D***A on September 3, 2016*

I've been looking for an alternative to ADD drugs for a while but the amino acids I've tried, such as 5-htp, l-theanine, A LA, DHEA, and other blends I've tried helped with my depression and anxiety, but with the added element of daily physical pain, it's hard to keep focused and push myself to be productive. I was almost always mentally checked out. I was trying so hard not to fall apart emotionally that I just didn't deal with anything. L-tyrosine has helped me to turn things around. While not a miracle drug, it does help me to be focused, less anxious, and more productive. Definitely worth a shot if you've been stagnant due to anxiety, depression, physical illness, or ADD, and just want to get on with life. I take 2 in the morning with a b vitamin, followed by a 500 mg l-theanine at lunch time. ( it keeps me upbeat, and sociable) and I feel like a normal human being. Like myself. Solaray's l-theanine chewable works quickly but capsules are a better value.

## Frequently Bought Together

- Doctors Best L-Tyrosine, 500 mg, Brain Transmitter Support, Non-GMO, Gluten Free 120 Veggie Caps
- Doctors BEST High Absorption Magnesium Lysinate Glycinate 100% Chelated, Muscle Relaxation & Sleep Support, Non-GMO, Gluten Free, Soy Free, Vegan, 100% Chelated 240 Tablets
- Doctor's Best L-Theanine Contains Suntheanine, Helps Reduce Stress & Sleep, Non-GMO, Gluten Free, Vegan, 150 mg (DRB-00197), 90 Count

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-16*