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Mega-Size BCAA 1000 Caps

Optimum Nutrition
4.7
★ ★ ★ ★ ★
(35253 ratings)
Leucine 500 mg
Isoleucine 250 mg
Valine 250 mg
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Score80
Micronized BCAAs use a balanced ratio with 500 mg leucine and 250 mg each of isoleucine and valine. The serving is small for athletic use, so several servings would be needed for a more substantial intake.
How scoring works
Quantity:200 Capsule(s) • (100 servings)
Goals:

Score 80

Micronized BCAAs use a balanced ratio with 500 mg leucine and 250 mg each of isoleucine and valine. The serving is small for athletic use, so several servings would be needed for a more substantial intake.
How scoring works
$18.99($0.18 per serving)
Supplement City
$ 18.99
iHerb
$ 24.70
iHerb
$ 24.70
Vitacost
$ 25.69
Amazon
$ 21.99
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Analysis

Micronized BCAAs use a balanced ratio with 500 mg leucine and 250 mg each of isoleucine and valine. The label provides enough detail to understand the central formula and serving.

The serving is small for athletic use, so several servings would be needed for a more substantial intake. That trade-off materially affects potency, convenience, transparency, or value.

Best suited to people who want low-cost, precisely dosed BCAA capsules for modest support. Expectations should match the disclosed ingredients and the product's focused role.

Who is it for
  • people who want low-cost, precisely dosed BCAA capsules for modest support
  • People who prefer the disclosed format and serving style
  • Users whose priorities match the formula rather than broader nutrition
Best for
  • Uses micronized branched-chain amino acids
  • Balanced leucine-led ratio
  • people who want low-cost, precisely dosed BCAA capsules for modest support

Pros

  • Uses micronized branched-chain amino acids
  • Balanced leucine-led ratio
  • Low serving cost with exact dose disclosure

Cons

  • Only 500 mg leucine per serving
  • Several servings are needed for higher intake
  • Capsule delivery is less workout-friendly than powder

Nutrient quality

84 Highest impact

Micronized L-leucine, L-isoleucine, and L-valine provide well-specified free-form amino acids. The two-capsule serving is well below meaningful standalone amounts for all three amino acids.

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Ingredient transparency

83 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

80 High impact

The formula offers mixed value because dose or focus limits practical usefulness. The product is reasonably competitive, though stronger values are available.

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Ingredients

IngredientAmount per serving
L-Leucine, Micronized
500 mg
L-Isoleucine, Micronized
250 mg
L-Valine, Micronized
250 mg
Adults 18–50 Women
Report overview
Leucine · 500 mg OverallScore68
B+ Active Ingredient Quality & BioavailabilityC Dose, Safety & Label TransparencyD+ Value

Micronized L-leucine provides clear isomer identity and quality processing, though the raw-material source is not stated. The 500 mg serving is well below the usual muscle protein synthesis trigger range, so the practical two-capsule serving remains underdosed for leucine alone. Cost per gram falls within the middle tier because the active amount is modest.

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Isoleucine · 250 mg OverallScore63
B- Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyA+ Value

The isolated, micronized L-isoleucine offers a clearly identified active form, but the capsule format may slow delivery compared with a mixed powder. A 250 mg serving is well below the collection target, so several servings would be needed to reach a more substantial amount. The low serving cost supports value, though the label provides no sourcing details or independent sport-testing certification.

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Valine · 250 mg OverallScore54
C+ Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyD- Value

Free-form micronized L-Valine provides a clearly identified active ingredient in a convenient capsule format. The amount per serving is quite low for the collection goal, so several capsules would be needed to reach a more meaningful intake. Exact label disclosure and a reasonable cost per gram improve practicality, but no sport-specific testing is stated.

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79 Performance

The Original Strawberry Kiwi Splash

XTEND
Higher disclosed amounts of all three BCAAs give 3.5 g leucine, 1.75 g isoleucine, and 1.75 g valine, plus glutamine, citrulline malate, and electrolytes, providing stronger standalone coverage than the original. The expanded powder formula adds ingredients beyond the original three-amino-acid focus, which may be unnecessary for someone seeking only BCAAs.
82 Performance

Branched-Chain Amino Acids

NOW Sports
Higher disclosed amounts of all three BCAAs give 1.6 g leucine, 0.65 g isoleucine, and 0.65 g valine, providing stronger standalone coverage than the original. Leucine still sits below a strong standalone muscle-protein trigger, and full directions and excipient details are not supplied.
79 Performance

Branched Chain Amino Acids (Free Form)

Life Extension
Higher disclosed amounts of all three BCAAs give 1.2 g leucine, 0.6 g isoleucine, and 0.6 g valine, providing stronger standalone coverage than the original. The serving remains modest for standalone use, and full directions and excipient details are not supplied.
60 Budget

Daily Amino Acid

21st Century
The lower listed serving cost provides small BCAA amounts within a broad essential-amino-acid blend, making it a more economical choice than the original. All three BCAA amounts are well below meaningful standalone levels, so the apparent serving value overstates practical coverage.
84 Budget

BCAA 3200 mg

Best Naturals
Fewer than three eligible products cost less per serving; among the nearest-priced options, this formula provides 1.6 g leucine, 0.8 g isoleucine, and 0.8 g valine. Leucine still sits below a strong standalone muscle-protein trigger, and full directions and excipient details are not supplied.
83 Budget

Branched-Chain Amino Acids

Lake Avenue Nutrition
Fewer than three eligible products cost less per serving; among the nearest-priced options, this formula provides 1.6 g leucine, 0.65 g isoleucine, and 0.65 g valine. Leucine still sits below a strong standalone muscle-protein trigger, and full directions and excipient details are not supplied.
76 Value

The Original Smash Apple

XTEND
3.5 g leucine, 1.75 g isoleucine, and 1.75 g valine, plus glutamine, citrulline malate, and electrolytes combine a stronger supplied dose-and-value balance than the original. The expanded powder formula adds ingredients beyond the original three-amino-acid focus, which may be unnecessary for someone seeking only BCAAs.
82 Value

Branched Chain Amino Acids

NOW Sports
1.6 g leucine, 0.65 g isoleucine, and 0.65 g valine combine a stronger supplied dose-and-value balance than the original. Leucine still sits below a strong standalone muscle-protein trigger, and full directions and excipient details are not supplied.
68 Value

BCAA Plus Branched Chain Amino Acids

Solgar
0.54 g leucine, 0.36 g isoleucine, and 0.3 g valine, plus vitamin B6 offer a practical quality-and-cost tradeoff, although the supplied data do not establish clearly better value than the original. All three BCAA amounts are well below meaningful standalone levels, so the apparent serving value overstates practical coverage.
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