Natural Factors L-Tryptophan – Essential Amino Acid for Lean Muscle & Active Lifestyles
 
Natural Factors L-Tryptophan provides a high-quality, free-form source of this essential amino acid to support muscle protein synthesis and lean muscle development. While L-tryptophan is commonly associated with sleep and relaxation, it also plays an important role in supporting physical performance and muscle-building goals when combined with regular resistance training and a balanced diet.
 
As a free-form amino acid, L-tryptophan is absorbed more efficiently than when obtained from food alone. This one-per-day, naturally fermented, vegetarian-friendly formula is ideal for individuals looking to support an active lifestyle and optimize muscle recovery and growth.
 
Key Benefits
• Provides an essential amino acid required for muscle protein synthesis
• Helps support lean muscle mass development when combined with resistance training
• Free-form amino acid for improved absorption
• Supports an active and fitness-focused lifestyle
• One-per-day convenient dosing
• Naturally fermented and vegetarian-friendly
 
Why Choose Natural Factors L-Tryptophan?
Natural Factors is known for producing clean, research-backed supplements with high standards of quality and purity. This L-Tryptophan formula offers a targeted dose of an essential amino acid in a bioavailable form, making it a smart addition to any training or wellness routine.
 
Whether you’re focused on strength training, muscle recovery, or overall fitness support, Natural Factors L-Tryptophan helps fuel your goals from the inside out.
 
Product Features
• Medicinal Ingredient: L-Tryptophan – 220 mg per capsule
• Free-form amino acid for optimal absorption
• One-per-day capsule format
• Vegetarian capsules
• Naturally fermented source
• Designed for active and fitness-oriented individuals
 
Non-Medicinal Ingredients:
Vegetarian capsule (carbohydrate gum [cellulose], purified water), dicalcium phosphate dihydrate, vegetable-grade magnesium stearate, microcrystalline cellulose, silica, stearic acid.
 
Natural Factors L-Tryptophan provides 220 mg of a free-form essential amino acid to support lean muscle mass, muscle protein synthesis, and active lifestyles. Vegetarian and naturally fermented.