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Amino Acid & Protein Supplements

Browse and search dietary supplements drawn from the U.S. National Institutes of Health Dietary Supplement Label Database (DSLD), which catalogs more than 113,000 product labels from supplement manufacturers. The U.S. supplement market is large, industry estimates put consumer spending around $50 billion a year, and each product page below renders directly from the latest DSLD release. See our methodology for source vintage and how each ingredient panel is parsed.

9,363 products · Page 78 of 188

L-Arginine1500
Evlution Nutrition
4 ingredients · Amino acid/Protein
On Market
L-Arginine5000 Unflavored
Evlution Nutrition
1 ingredient · Amino acid/Protein
On Market
L-Asparagine 400 mg
Douglas Laboratories
4 ingredients · Amino acid/Protein
On Market
L-Aspartic Acid
Douglas Laboratories
1 ingredient · Amino acid/Protein
On Market
L-Aspartic Acid
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Aspartic Acid
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Aspartic Acid
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Aspartic Acid
BulkSupplements.com
2 ingredients · Amino acid/Protein
On Market
L-Aspartic Acid
BulkSupplements.com
1 ingredient · Amino acid/Protein
On Market
L-Aspartic Acid
BulkSupplements.com
1 ingredient · Amino acid/Protein
On Market
L-Aspartic Acid
BulkSupplements.com
1 ingredient · Amino acid/Protein
On Market
L-Aspartic Acid
BulkSupplements.com
1 ingredient · Amino acid/Protein
On Market
L-Aspartic Acid Powder
Source Naturals
2 ingredients · Amino acid/Protein
Off Market
L-Aspartic Acid Powder
Source Naturals
2 ingredients · Amino acid/Protein
On Market
L-Carnitine 1000
GNC Total Lean
6 ingredients · Amino acid/Protein
On Market
L-Carnitine 1000 mg
NOW
7 ingredients · Amino acid/Protein
Off Market
L-Carnitine 1000 mg
NOW
7 ingredients · Amino acid/Protein
Off Market
L-Carnitine 1000 mg
NOW
6 ingredients · Amino acid/Protein
Off Market
L-Carnitine 1000 mg
NOW
6 ingredients · Amino acid/Protein
On Market
L-Carnitine 1000 mg Free Form
Vitamin World
7 ingredients · Amino acid/Protein
On Market
L-Carnitine 2 grams
GNC Beyond Raw Chemistry Labs
2 ingredients · Amino acid/Protein
On Market
L-Carnitine 250 As L-Carnitine Tartrate
Jarrow Formulas
5 ingredients · Amino acid/Protein
Off Market
L-Carnitine 250 mg
Jarrow Formulas
4 ingredients · Amino acid/Protein
Off Market
L-Carnitine 250 mg
Douglas Laboratories
4 ingredients · Amino acid/Protein
Off Market
L-Carnitine 250 mg
NOW
5 ingredients · Amino acid/Protein
Off Market
L-Carnitine 250 mg
Vitamin World
4 ingredients · Amino acid/Protein
On Market
L-Carnitine 250 mg
Douglas Laboratories
5 ingredients · Amino acid/Protein
On Market
L-Carnitine 250 mg
NOW
5 ingredients · Amino acid/Protein
Off Market
L-Carnitine 250 mg
Douglas Laboratories
5 ingredients · Amino acid/Protein
On Market
L-Carnitine 500 mg
Vitamin World
6 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
GNC
2 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
GNC
2 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
GNC
2 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
PhysioLogics
9 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
Nature's Bounty
7 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
Sundown Naturals
9 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
VitaCeutical Labs
5 ingredients · Amino acid/Protein
On Market
L-Carnitine 500 mg
Jarrow Formulas
4 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
Jarrow Formulas
4 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
Physician's Preference
5 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
Spring Valley
10 ingredients · Amino acid/Protein
On Market
L-Carnitine 500 mg
Protocol For Life Balance
4 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
up&up
7 ingredients · Amino acid/Protein
On Market
L-Carnitine 500 mg
Vitamin World
6 ingredients · Amino acid/Protein
On Market
L-Carnitine 500 mg
PhysioLogics
7 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
Vitamer Laboratories
5 ingredients · Amino acid/Protein
On Market
L-Carnitine 500 mg
Natural Factors
5 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
Natural Factors
5 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
NOW
5 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
Protocol For Life Balance
5 ingredients · Amino acid/Protein
Off Market