PlainVitamins

Free Amino Acids

by Nature's Sunshine · tablet or pill · 60 tablets

  • On the market (NIH)
  • UPC 0 99904 03664 2
  • DSLD label 255231
  • Serving 2 tablets
  • 30 servings

Free Amino Acids by Nature's Sunshine lists 20 ingredients, 20 with an amount per serving of 2 tablets, such as 106 mg of magnesium, 140 mg of L-glutamine, 100 mg of L-carnitine and 100 mg of L-leucine. Its current label entered the NIH Dietary Supplement Label Database on September 24, 2021.

What is in Free Amino Acids?

Each row as the label prints it, per serving of 2 tablets. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Free Amino Acids: Supplement Facts rows against the market (DSLD label 255231, January 2026 release)
IngredientAmount% DVAmong products listing it
Magnesiumas Magnesium Aspartate, Magnesium Oxide106 mg25%Magnesium in Free Amino Acids against 14,003 products106 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg106 mg

Higher than 63% of 14,003 products listing magnesium (median 86 mg). Per day at the most servings: 318 mg.

L-Glutamine140 mgGlutamine in Free Amino Acids against 1,850 products0.14 g per serving; the middle half of products list 0.356 g to 3 g, the median 1 g.0.14 g

86% of 1,850 products listing glutamine give more (median 1 g). Per day at the most servings: 0.42 g.

L-Carnitine100 mgL-Carnitine in Free Amino Acids against 1,338 products100 mg per serving; the middle half of products list 110.5 mg to 1,000 mg, the median 500 mg.100 mg

75% of 1,338 products listing L-carnitine give more (median 500 mg). Per day at the most servings: 300 mg.

L-Leucine100 mgLeucine in Free Amino Acids against 2,056 products0.1 g per serving; the middle half of products list 1 g to 3.5 g, the median 2.5 g.0.1 g

93% of 2,056 products listing leucine give more (median 2.5 g). Per day at the most servings: 0.3 g.

L-Lysine90 mgLysine in Free Amino Acids against 1,250 products90 mg per serving; the middle half of products list 148.25 mg to 996.25 mg, the median 500 mg.90 mg

83% of 1,250 products listing lysine give more (median 500 mg). Per day at the most servings: 270 mg.

L-Aspartic Acid88 mgAspartic Acid in Free Amino Acids against 377 products88 mg per serving; the middle half of products list 106 mg to 1,846 mg, the median 337 mg.88 mg

78% of 377 products listing aspartic acid give more (median 337 mg). Per day at the most servings: 264 mg.

L-Valine70 mgValine in Free Amino Acids against 1,632 products0.07 g per serving; the middle half of products list 0.5 g to 1.5 g, the median 1.25 g.0.07 g

95% of 1,632 products listing valine give more (median 1.25 g). Per day at the most servings: 0.21 g.

L-Isoleucine56 mgIsoleucine in Free Amino Acids against 1,614 products0.056 g per serving; the middle half of products list 0.5 g to 1.5 g, the median 1.23 g.0.056 g

96% of 1,614 products listing isoleucine give more (median 1.23 g). Per day at the most servings: 0.168 g.

L-Phenylalanine56 mgPhenylalanine in Free Amino Acids against 611 products56 mg per serving; the middle half of products list 100 mg to 597.5 mg, the median 250 mg.56 mg

83% of 611 products listing phenylalanine give more (median 250 mg). Per day at the most servings: 168 mg.

L-Threonine56 mgTHREONINE in Free Amino Acids against 590 products56 mg per serving; the middle half of products list 140 mg to 886.25 mg, the median 500 mg.56 mg

85% of 590 products listing THREONINE give more (median 500 mg). Per day at the most servings: 168 mg.

L-Proline45 mgProline in Free Amino Acids against 387 products45 mg per serving; the middle half of products list 100 mg to 1,289 mg, the median 487.5 mg.45 mg

89% of 387 products listing proline give more (median 487.5 mg). Per day at the most servings: 135 mg.

L-Alanine44 mgAlanine in Free Amino Acids against 475 products44 mg per serving; the middle half of products list 100 mg to 972 mg, the median 483 mg.44 mg

87% of 475 products listing alanine give more (median 483 mg). Per day at the most servings: 132 mg.

L-Serine41 mgSerine in Free Amino Acids against 314 products41 mg per serving; the middle half of products list 100 mg to 1,056 mg, the median 408 mg.41 mg

87% of 314 products listing serine give more (median 408 mg). Per day at the most servings: 123 mg.

L-Tyrosine30 mgTyrosine in Free Amino Acids against 1,680 products30 mg per serving; the middle half of products list 150 mg to 989 mg, the median 500 mg.30 mg

93% of 1,680 products listing tyrosine give more (median 500 mg). Per day at the most servings: 90 mg.

L-Methionine29 mgMETHIONINE in Free Amino Acids against 981 products29 mg per serving; the middle half of products list 25 mg to 250 mg, the median 100 mg.29 mg

72% of 981 products listing METHIONINE give more (median 100 mg). Per day at the most servings: 87 mg.

L-Arginine22 mgArginine in Free Amino Acids against 1,455 products22 mg per serving; the middle half of products list 167 mg to 1,000 mg, the median 500 mg.22 mg

92% of 1,455 products listing arginine give more (median 500 mg). Per day at the most servings: 66 mg.

L-Cysteine21 mgCysteine in Free Amino Acids against 516 products21 mg per serving; the middle half of products list 30 mg to 200 mg, the median 85 mg.21 mg

80% of 516 products listing cysteine give more (median 85 mg). Per day at the most servings: 63 mg.

Glycine16 mgGlycine in Free Amino Acids against 1,078 products16 mg per serving; the middle half of products list 100 mg to 846 mg, the median 300 mg.16 mg

95% of 1,078 products listing glycine give more (median 300 mg). Per day at the most servings: 48 mg.

L-Histidine16 mgHistidine in Free Amino Acids against 591 products16 mg per serving; the middle half of products list 50 mg to 402.8 mg, the median 125 mg.16 mg

88% of 591 products listing histidine give more (median 125 mg). Per day at the most servings: 48 mg.

L-Tryptophan14 mgTryptophan in Free Amino Acids against 605 products14 mg per serving; the middle half of products list 55 mg to 471 mg, the median 123 mg.14 mg

94% of 605 products listing tryptophan give more (median 123 mg). Per day at the most servings: 42 mg.

Source: NIH ODS Dietary Supplement Label Database, label 255231 (entered September 24, 2021), version 9.4.0. See the label on DSLD. Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • 93% of the 2,056 products that print an amount of leucine list more than its 0.1 g of L-leucine (filed by NIH under leucine) (median 2.5 g).
  • 95% of the 1,632 products that print an amount of valine list more than its 0.07 g of L-valine (filed by NIH under valine) (median 1.25 g).
  • 96% of the 1,614 products that print an amount of isoleucine list more than its 0.056 g of L-isoleucine (filed by NIH under isoleucine) (median 1.23 g).
  • 89% of the 387 products that print an amount of proline list more than its 45 mg of L-proline (filed by NIH under proline) (median 487.5 mg).
  • 93% of the 1,680 products that print an amount of tyrosine list more than its 30 mg of L-tyrosine (filed by NIH under tyrosine) (median 500 mg).
  • 92% of the 1,455 products that print an amount of arginine list more than its 22 mg of L-arginine (filed by NIH under arginine) (median 500 mg).

The NIH database records 3 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

2 products list the very same ingredients; the nearest amounts come first.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Recommended Use: Take 2 tablets witha meal three times daily.
Warnings
Attention Phenylketonurics: Contains Phenylalanine.
Do not use if inner seal is missing or damaged.

Source: label statements in DSLD label 255231.

What else is on the label?

Other ingredients: hydrolyzed Whey Protein, Cellulose, Stearic Acid, Silicon Dioxide, Vegetable Magnesium Stearate.

How many labels does Free Amino Acids have?

One label is on file, entered on September 24, 2021.

  1. Label 255231 (current) Entered September 24, 2021 · on the market · 60 tablets · UPC 0 99904 03664 2

DSLD also links this label to: Free Amino Acids with Magnesium & L-Carnitine (image difference, same product).

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Nature's Sunshine Products, Inc. (manufacturer), Spanish Fork, UT. All Nature's Sunshine products.

Where next?