L-Valine
A fundamental branched-chain amino acid (BCAA) for muscle growth, tissue repair, and energy.
Also known as: Valine
Overview
L-Valine is an essential branched-chain amino acid (BCAA), working alongside leucine and isoleucine to support muscle health and energy production. The body cannot synthesize it, so it must be obtained from dietary sources or supplements. Valine is integral for muscle tissue repair, nitrogen balance, and can be used by muscles as an energy source. It is a popular supplement among athletes for its role in preventing muscle breakdown and reducing exercise-induced fatigue.
Key Benefits
Supports Muscle Growth and Repair
Provides a building block for new muscle tissue and helps repair muscle damage caused by exercise.
Provides Energy to Muscles
Can be oxidized in the muscles to provide energy during intense physical activity.
Reduces Exercise Fatigue
Competes with tryptophan for entry into the brain, which may help reduce the perception of fatigue during long workouts.
Maintains Nitrogen Balance
Essential for maintaining a positive nitrogen balance in the body, which is crucial for a muscle-building (anabolic) state.
Dosage & How to Take
Valine is typically consumed as part of a BCAA product. The recommended daily intake for adults is about 24 mg per kg of body weight.
| Purpose | Dose | Notes |
|---|---|---|
| Muscle Support (as BCAA) | 5-10 grams of BCAAs | A 2:1:1 ratio provides 1.25-2.5 grams of valine. |
| Endurance Events | 7-12 grams of BCAAs | Can help provide a steady source of energy to working muscles. |
Best Time to Take
For optimal results, consume BCAA supplements containing valine shortly before, during, or after your workout.
With or Without Food
Can be taken with or without food. Taking it on an empty stomach around workouts may lead to faster absorption.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| BCAA Supplements (Powder/Capsules) | High | Targeted support for athletic performance and recovery. | The 2:1:1 ratio is the most common and well-researched. |
| Protein Powders (Whey, Casein) | High | A complete source of all essential amino acids, including valine. | Ideal for post-workout recovery. |
| Whole Foods | High | General dietary intake. | Abundant in protein-rich foods. |
Side Effects & Safety
Common
- Well-tolerated by most people. High doses of single amino acids are not recommended.
Rare
- Fatigue
- Nausea
- Lack of coordination (at very high doses).
Contraindications
- Should be avoided by individuals with Maple Syrup Urine Disease (MSUD).
Interactions
BCAAs can influence blood sugar levels. Monitor glucose closely if taking with diabetes drugs.
May interfere with the absorption and effectiveness of Levodopa, a medication for Parkinson's disease.
Scientific Research
Exercise-induced muscle damage is reduced in resistance-trained males by branched chain amino acids: a randomized, double-blind, placebo controlled study
BCAA supplementation before and after squat exercise reduced markers of muscle damage and soreness.
BCAA intake affects protein metabolism in humans after exercise
BCAAs, including valine, play a critical role in regulating protein synthesis and turnover in response to exercise.
Food Sources
Products With L-Valine
5 products in our database contain this ingredient
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.