PlainVitamins

AminoSelect

by Moss Nutrition · capsule · 120 vegetarian capsules

  • On the market (NIH)
  • UPC M099
  • DSLD label 306480
  • Serving 1 capsule; amounts per 4 capsules
  • 30 servings

AminoSelect by Moss Nutrition lists 9 ingredients, 9 with an amount per serving of 4 capsules, such as 1,000 mg of L-leucine, 400 mg of L-lysine, 330 mg of L-valine and 320 mg of isoleucine. Its current label entered the NIH Dietary Supplement Label Database on February 22, 2024.

What is in AminoSelect?

Each row as the label prints it, per serving of 4 capsules. 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).

AminoSelect: Supplement Facts rows against the market (DSLD label 306480, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Leucine1,000 mgLeucine in AminoSelect against 2,056 products1 g per serving; the middle half of products list 1 g to 3.5 g, the median 2.5 g.1 g

73% of 2,056 products listing leucine give more (median 2.5 g). Per day at the most servings: 4 g.

L-Lysine400 mgLysine in AminoSelect against 1,250 products400 mg per serving; the middle half of products list 148.25 mg to 996.25 mg, the median 500 mg.400 mg

56% of 1,250 products listing lysine give more (median 500 mg). Per day at the most servings: 1,600 mg.

L-Valine330 mgValine in AminoSelect against 1,632 products0.33 g per serving; the middle half of products list 0.5 g to 1.5 g, the median 1.25 g.0.33 g

81% of 1,632 products listing valine give more (median 1.25 g). Per day at the most servings: 1.32 g.

Isoleucine320 mgIsoleucine in AminoSelect against 1,614 products0.32 g per serving; the middle half of products list 0.5 g to 1.5 g, the median 1.23 g.0.32 g

82% of 1,614 products listing isoleucine give more (median 1.23 g). Per day at the most servings: 1.28 g.

Threonine280 mgTHREONINE in AminoSelect against 590 products280 mg per serving; the middle half of products list 140 mg to 886.25 mg, the median 500 mg.280 mg

64% of 590 products listing THREONINE give more (median 500 mg). Per day at the most servings: 1,120 mg.

Phenylalanine200 mgPhenylalanine in AminoSelect against 611 products200 mg per serving; the middle half of products list 100 mg to 597.5 mg, the median 250 mg.200 mg

54% of 611 products listing phenylalanine give more (median 250 mg). Per day at the most servings: 800 mg.

Methionine100 mgMETHIONINE in AminoSelect against 981 products100 mg per serving; the middle half of products list 25 mg to 250 mg, the median 100 mg.100 mg

42% of 981 products listing METHIONINE give more (median 100 mg). Per day at the most servings: 400 mg.

Histidine50 mgHistidine in AminoSelect against 591 products50 mg per serving; the middle half of products list 50 mg to 402.8 mg, the median 125 mg.50 mg

71% of 591 products listing histidine give more (median 125 mg). Per day at the most servings: 200 mg.

5-Hydroxytryptophan20 mg5-HTP in AminoSelect against 676 products20 mg per serving; the middle half of products list 50 mg to 100 mg, the median 100 mg.20 mg

92% of 676 products listing 5-HTP give more (median 100 mg). Per day at the most servings: 80 mg.

Source: NIH ODS Dietary Supplement Label Database, label 306480 (entered February 22, 2024), version 9.4.0. See the label on DSLD or its label image (PDF). 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:

  • 92% of the 676 products that print an amount of 5-HTP list more than its 20 mg of 5-hydroxytryptophan (filed by NIH under 5-HTP) (median 100 mg).

The NIH database records 4 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?

1 product lists 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
Suggested Use: 4 capsules per day in divided doses with meals, or as directed by your healthcare professional.
Warnings
Warning: If you are taking medication, have a medical condition or an upcoming medical procedure, or are pregnant or nursing, consult a physician before using.
If adverse reactions occur, discontinue use and consult your healthcare practitioner.
Keep out of reach of children.
Allergens and what it does not contain
Does not contain gluten.
Storage
Store sealed in a cool, dry place.

Source: label statements in DSLD label 306480.

What else is on the label?

Other ingredients: Cellulose, Stearate, Silicon Dioxide, Microcrystalline Cellulose.

How many labels does AminoSelect have?

3 labels are on file under this name since April 23, 2020: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 306480 (current) Entered February 22, 2024 · on the market · 120 vegetarian capsules · UPC M099
  2. Label 275494 Entered October 24, 2022 · off the market March 9, 2023 · 120 vegetarian capsules · UPC M099
  3. Label 217762 Entered April 23, 2020 · off the market January 18, 2022 · 120 vegetarian capsules · UPC M099

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

Who makes it?

The label names Moss Nutrition Products, Inc. (distributor), Hadley, MA. All Moss Nutrition products.

Where next?