Thorne Collagen Fit Unflavored Collagen Peptides Powder with Nicotinamide Riboside -15g of Collagen Peptides and 14g Protein per serving NSF Certified for Sport 17.8 Oz 30 servings
ThorneAnalysis updated August 2026 · How Scout scores
At a glance
Summary
This collagen peptide powder is formulated with high-quality ingredients, providing a significant amount of protein per serving without the inclusion of artificial sweeteners, dyes, or seed oils. The product is NSF Certified for Sport, indicating a level of quality assurance and safety. While it contains some additives, they are primarily amino acids, which are expected in a protein supplement and do not significantly detract from its overall quality.
Key ingredients 18
GlycineGood
Beneficial ingredient — whole-food or functional value in this product class.
Benefits
Glycine supports collagen production and nervous system health.
AlanineNeutral
Alanine is a non-essential amino acid that plays a role in protein synthesis. It is naturally present in many protein-rich foods and supplements. There are no significant health concerns associated with alanine in typical dietary amounts.
Benefits
Alanine supports muscle metabolism and immune system health.
ArginineNeutral
Arginine is a semi-essential amino acid involved in nitric oxide production, which can enhance blood flow. It is commonly included in supplements for its potential cardiovascular benefits. However, excessive intake may lead to gastrointestinal discomfort.
Risks
Excessive consumption may cause gastrointestinal issues such as bloating or diarrhea.
Benefits
Arginine may improve circulation and support cardiovascular health.
Aspartic AcidNeutral
Aspartic acid is a non-essential amino acid involved in hormone production and nervous system function. It is naturally found in protein-rich foods. There are no significant health concerns associated with aspartic acid in typical dietary amounts.
Benefits
Aspartic acid supports hormone production and nervous system health.
CysteineNeutral
Cysteine is a semi-essential amino acid that contributes to the synthesis of glutathione, an important antioxidant. It is often included in supplements for its potential detoxification benefits. There are no significant health concerns associated with cysteine in typical dietary amounts.
Benefits
Cysteine supports antioxidant production and detoxification processes.
Glutamic AcidNeutral
Glutamic acid is a non-essential amino acid that serves as a neurotransmitter in the brain. It is naturally present in many foods and supplements. There are no significant health concerns associated with glutamic acid in typical dietary amounts.
Benefits
Glutamic acid supports brain function and neurotransmitter activity.
HistidineNeutral
Histidine is an essential amino acid important for growth and tissue repair. It is naturally found in protein-rich foods and supplements. There are no significant health concerns associated with histidine in typical dietary amounts.
Benefits
Histidine supports tissue growth and repair.
IsoleucineNeutral
Isoleucine is an essential amino acid that is part of the branched-chain amino acids (BCAAs) group, important for muscle metabolism. It is commonly included in protein supplements. There are no significant health concerns associated with isoleucine in typical dietary amounts.
Benefits
Isoleucine supports muscle metabolism and energy production.
LeucineNeutral
Leucine is an essential amino acid and a key component of BCAAs, crucial for muscle protein synthesis. It is widely used in protein supplements for its muscle-building properties. There are no significant health concerns associated with leucine in typical dietary amounts.
Benefits
Leucine promotes muscle protein synthesis and recovery.
LysineNeutral
Lysine is an essential amino acid necessary for protein synthesis and calcium absorption. It is naturally present in many protein-rich foods. There are no significant health concerns associated with lysine in typical dietary amounts.
Benefits
Lysine supports protein synthesis and calcium absorption.
MethionineNeutral
Methionine is an essential amino acid involved in the synthesis of proteins and other important molecules. It is commonly found in protein supplements. There are no significant health concerns associated with methionine in typical dietary amounts.
Benefits
Methionine supports protein synthesis and metabolic processes.
PhenylalanineNeutral
Phenylalanine is an essential amino acid that is a precursor to neurotransmitters like dopamine. It is naturally found in protein-rich foods and supplements. There are no significant health concerns associated with phenylalanine in typical dietary amounts.
Benefits
Phenylalanine supports neurotransmitter production and brain function.
ProlineNeutral
Proline is a non-essential amino acid important for collagen synthesis and skin health. It is naturally present in many protein-rich foods. There are no significant health concerns associated with proline in typical dietary amounts.
Benefits
Proline supports collagen production and skin health.
SerineNeutral
Serine is a non-essential amino acid involved in the synthesis of proteins and other biomolecules. It is naturally found in protein-rich foods. There are no significant health concerns associated with serine in typical dietary amounts.
Benefits
Serine supports protein synthesis and cellular function.
ThreonineNeutral
Threonine is an essential amino acid necessary for protein synthesis and immune function. It is commonly included in protein supplements. There are no significant health concerns associated with threonine in typical dietary amounts.
Benefits
Threonine supports protein synthesis and immune health.
TryptophanNeutral
Tryptophan is an essential amino acid that serves as a precursor to serotonin, a neurotransmitter. It is naturally found in protein-rich foods and supplements. There are no significant health concerns associated with tryptophan in typical dietary amounts.
Benefits
Tryptophan supports serotonin production and mood regulation.
TyrosineNeutral
Tyrosine is a non-essential amino acid involved in the production of neurotransmitters like dopamine. It is naturally present in many protein-rich foods. There are no significant health concerns associated with tyrosine in typical dietary amounts.
Benefits
Tyrosine supports neurotransmitter production and cognitive function.
ValineNeutral
Valine is an essential amino acid and part of the BCAAs, important for muscle growth and tissue repair. It is commonly included in protein supplements. There are no significant health concerns associated with valine in typical dietary amounts.
Benefits
Valine supports muscle growth and tissue repair.
Processing
Ultra-Processed Foods
Get the full breakdown in the Scout appTake Scout shopping
Scan any product to see lab results, healthy alternatives, and your personalized analysis.
Download on theApp Store GET IT ONGoogle PlayAmazon pricing & content
Amazon price as of . Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED “AS IS” AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.