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Daily Amino Acid

21st Century
4.6
★ ★ ★ ★ ★
(8733 ratings)
Isoleucine 63 mg
Valine 58 mg
Leucine 105 mg
Phenylalanine 32 mg
Histidine 17 mg
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Score60
One tablet supplies a broad essential-amino-acid panel at a very low serving cost. Nearly every amino acid is present only in a trace amount, and the calcium-heavy tablet adds bulk without making the amino-acid serving meaningful.
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Quantity:120 Tablet(s) • (120 servings)
Goals:

Score 60

One tablet supplies a broad essential-amino-acid panel at a very low serving cost. Nearly every amino acid is present only in a trace amount, and the calcium-heavy tablet adds bulk without making the amino-acid serving meaningful.
How scoring works
$9.99($0.08 per serving)
Amazon
$ 9.99
iHerb
$ 9.99
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Analysis

One tablet supplies a broad essential-amino-acid panel at a very low serving cost. The label provides enough detail to understand the central formula and serving.

Nearly every amino acid is present only in a trace amount, and the calcium-heavy tablet adds bulk without making the amino-acid serving meaningful. That trade-off materially affects potency, convenience, transparency, or value.

Best suited to people seeking a small dietary top-up, not targeted amino-acid or sports support. Expectations should match the disclosed ingredients and the product's focused role.

Who is it for
  • people seeking a small dietary top-up, not targeted amino-acid or sports support
  • People who prefer the disclosed format and serving style
  • Users whose priorities match the formula rather than broader nutrition
Best for
  • Broad amino-acid panel in one tablet
  • Individual amino-acid amounts are disclosed
  • people seeking a small dietary top-up, not targeted amino-acid or sports support

Pros

  • Broad amino-acid panel in one tablet
  • Individual amino-acid amounts are disclosed
  • Very low serving cost

Cons

  • Leucine amount is far below a muscle-focused range
  • Most amino acids are present only in trace amounts
  • Poor value when assessed per gram of active amino acids

Warnings

  • Contains phenylalanine and is not suitable for people with phenylketonuria.
  • The provided label details do not show a PKU warning despite the phenylalanine content.
  • People who must restrict phenylalanine should avoid this formula.

Nutrient quality

56 Moderate impact

Several L-amino acids use clear forms, but DL-methionine includes an avoidable non-L isomer. Every listed amino acid is present only in a trace amount for focused supplementation.

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Ingredient transparency

80 Highest impact

Active ingredients have stated amounts and no proprietary blend hides a dose. Serving count is supplied, while full directions and the other-ingredients list are missing.

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Customer satisfaction

70 High impact

The supplied aggregate rating is the only evidence of general satisfaction and its reliability depends on rating volume. No comment-level evidence is available to assess recurring complaints or confirm how experience matches the intended purpose.

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Value for money

30 Situational impact

Weak dosing or poor focus makes the serving difficult to justify. Comparable products offer better targeted dose value.

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Ingredients

IngredientAmount per serving
Calcium (Calcium Carbonate, Dicalcium Phosphate)
 150 mg
Sodium
5 mg
L-Histidine (L-Histidine Hydrochloride)
 17 mg
L-Isoleucine
63 mg
L-Leucine
105 mg
L-Lysine (L-Lysine Hydrochloride)
 93 mg
DL-Methionine
21 mg
L-Cysteine (L-Cysteine Hydrochloride)
 11 mg
L-Phenylalanine
32 mg
L-Tyrosine
31 mg
L-Threonine
69 mg
L-Valine
58 mg
Gluten Free Adults 18–50
Report overview
Isoleucine · 63 mg OverallScore63
B- Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyA+ Value

The tablet provides only 63 mg of isolated L-isoleucine, far below the collection benchmark. The exact amount is clear, but tablet delivery is slower and no source method or independent testing is stated. Its very low serving cost cannot offset the limited isoleucine dose for this collection.

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Valine · 58 mg OverallScore45
C+ Active Ingredient Quality & BioavailabilityD- Dose, Safety & Label TransparencyF Value

Free-form L-valine is clearly identified, but the 58 mg tablet dose is too low to contribute meaningfully to the stated athletic goal. The individual amount is transparent and convenient in one tablet. Low serving cost does not translate into good value per gram because so little valine is delivered.

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Leucine · 105 mg OverallScore42
D+ Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyF Value

L-Leucine is clearly identified, but no fermented, vegan, or branded source is disclosed; the unit-dose format avoids mixing concerns, but no quality-processing details are provided. The serving amount is too low to independently trigger muscle protein synthesis; the amount is clearly disclosed, and the unit count is practical. Cost per gram of active leucine is high for the disclosed dose.

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83 Performance

Branched-Chain Amino Acids

Lake Avenue Nutrition
Clearly identified L-leucine, L-isoleucine, and L-valine provide much larger amounts than the original trace doses. Leucine remains below a strong standalone trigger, but the focused formula has substantially better active depth.
82 Performance

Branched-Chain Amino Acids

NOW Sports
The serving supplies 1,600 mg leucine and 650 mg each of isoleucine and valine as clear L-isomers. It covers fewer amino acids, but the branched-chain doses are far more meaningful than the original.
79 Performance

Branched Chain Amino Acids (Free Form)

Life Extension
Free-form branched-chain amino acids avoid protein digestion and provide substantially larger amounts than the original tablets. The serving is still modest and drops histidine, phenylalanine, lysine, and threonine.
80 Budget

Mega-Size BCAA 1000 Caps

Optimum Nutrition
No supplied candidate is strictly cheaper per serving, but this is the nearest-cost option and supplies 500 mg leucine plus 250 mg each of isoleucine and valine. The amounts remain modest, yet they are substantially larger than the original trace doses.
84 Budget

BCAA 3200 mg

Best Naturals
It is not strictly cheaper per serving, but 3,200 mg of clearly listed branched-chain amino acids provides far more usable material for a modest cost increase. The formula omits the original broader essential-amino coverage and calcium.
66 Budget

Essential Aminos

Pure Encapsulations
It is not cheaper per serving, but it is the closest broad essential-amino candidate after the two lower-cost branched-chain products. L-methionine avoids the original DL form, although every individual amount is still too small for focused supplementation.
76 Value

The Original Smash Apple

XTEND
Substantial branched-chain amino amounts, 2,500 mg glutamine, and a large package provide far more useful active material per serving. It costs more than the original, but the dose depth better justifies ongoing use despite an opaque electrolyte blend.
68 Value

BCAA Plus Branched Chain Amino Acids

Solgar
Clearly disclosed branched-chain amino acids and vitamin B6 provide more active depth than the original trace-dose blend. The combined amino amount is still low and vitamin B6 is high, so value remains mixed.
79 Value

Amino-9 Essentials Powder

NOW Sports
Nine clearly identified essential amino acids provide broader and much larger amounts than the original. Several individual doses remain below focused targets, but the coherent powder formula offers more useful active value.
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