Is this a BCAA supplement?

It contains the branched-chain amino acids leucine, isoleucine and valine, but it is a broader amino acid blend that also includes phenylalanine, methionine and others. It is not a pure BCAA product.

Is it suitable for vegans?

No. The label lists whey as a protein type, so it contains dairy. Vegans and people on dairy-free diets should look for a plant-based amino acid supplement.

The serving is one tablet daily. Take it with water, and follow the label directions rather than doubling up.

Yes. It is labeled gluten-free, which makes it an option for people avoiding gluten.

Can it replace protein powder?

No. A single tablet supplies a small amount of amino acids, not the protein grams a powder or food provides. Use it as a top-up, not a protein source.

Anyone with a dairy allergy or on a dairy-free diet, and anyone advised to limit sodium, since it contains a small amount of sodium. Check with a doctor if you take other supplements or medication.

Where is the 21st Century Daily Amino Acid cheapest?

At Vitacost.com, for $9.99, as of our latest check.

What do buyers say about the 21st Century Daily Amino Acid?

Rated 4.7 out of 5 from 1,500 ratings.

Where can I buy the 21st Century Daily Amino Acid?

3 stores we checked sell it, including 21st-century-vitamins, Vitacost.com, Walmart.

21st Century Daily Amino Acid

Best price now

$9.99at Vitacost.comObserved at 2:53 AM

Compared across 3 stores. Prices are checked against each store and labelled with when.

Visit Vitacost.com

21st Century Daily Amino Acid

Best price now

$9.99at Vitacost.comObserved at 2:53 AM

Compared across 3 stores. Prices are checked against each store and labelled with when.

Visit Vitacost.com

Ask our agent about this product

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Price facts

Lowest price today: $9.99 at Vitacost.com (checked Nov 9, 2026).
Checked at 3 stores.

Our take on the 21st Century Daily Amino Acid

21st Century Daily Amino Acid is a gluten-free tablet supplement that supplies a blend of essential amino acids, including leucine, isoleucine, valine, phenylalanine and methionine, plus calcium and a small amount of sodium. One tablet a day is the dose, which makes it simpler than powder BCAA or EAA products that need measuring and mixing. It suits adults who want a low-effort daily amino acid top-up alongside protein from food. Reviewers rate it highly and call it easy to take, though the dose is small compared with free-form amino acid powders, and the label lists whey as a protein type, so it is not a vegan product.

Best forAdults wanting a simple daily amino acid tabletGluten-free dietsPeople who dislike mixing amino acid powdersGeneral muscle support alongside a protein-rich diet

Pros

One tablet daily, no mixing or measuring
Gluten-free and unisex for adults
Includes leucine, isoleucine and valine, the branched-chain amino acids
Small, easy-to-swallow tablet form
Widely available and highly rated by buyers

Cons

A single tablet delivers a small amino acid dose next to BCAA powders
Contains whey, so it is not suitable for vegans or dairy-free diets
Includes dl-methionine and other non-BCAA aminos, which some buyers do not want
Not a complete protein replacement

21st Century Daily Amino Acid prices at every store

21st-century-vitaminsNew
In stock
$9.99Observed at 2:53 AM
Visit 21st-century-vitamins
Vitacost.comNew
In stock
$9.99Observed at 2:53 AM
Visit Vitacost.com
WalmartNew
In stockSold by iHerb
$11.49Observed at 2:53 AM
Visit Walmart

21st Century Daily Amino Acid price history

Lowest price we've seen: $9.99 on Nov 9 at 21st-century-vitamins. Tracked across 3 stores since Nov 9.

What reviewers say

4.7 / 51,500 ratings

Buyers rate it 4.7 out of 5 across about 1,500 ratings and mostly describe it as an easy daily habit. Praise centers on the small tablet, the gluten-free label and the convenience of a once-daily dose. Criticism is limited but points to the modest dose and the whey content.

What people mention

ConveniencePraisedBuyers like that one small tablet covers the daily dose without mixing a drink.
DoseMixedSome say the amino acid amount per tablet is modest next to BCAA powders.
Gluten-freePraisedShoppers on gluten-free diets value the clear gluten-free labeling.
Whey contentCriticisedBuyers avoiding dairy note that whey is listed as a protein type.
Tablet sizePraisedOwners describe the tablets as small and easy to swallow.

Specifications

Supplement Type: Amino Acid
Target Concern: Muscle Building
Body Part Use: Muscle
Dosage: 1 Tablet
Serving Size: 1 Tablet
Dosage Frequency: Daily
Form: Tablet, Tablets
Free Of

Questions and answers

Is this a BCAA supplement?: It contains the branched-chain amino acids leucine, isoleucine and valine, but it is a broader amino acid blend that also includes phenylalanine, methionine and others. It is not a pure BCAA product.
Is it suitable for vegans?: No. The label lists whey as a protein type, so it contains dairy. Vegans and people on dairy-free diets should look for a plant-based amino acid supplement.
How do you take it?: The serving is one tablet daily. Take it with water, and follow the label directions rather than doubling up.
Is it gluten-free?: Yes. It is labeled gluten-free, which makes it an option for people avoiding gluten.
Can it replace protein powder?: No. A single tablet supplies a small amount of amino acids, not the protein grams a powder or food provides. Use it as a top-up, not a protein source.
Who should avoid it?: Anyone with a dairy allergy or on a dairy-free diet, and anyone advised to limit sodium, since it contains a small amount of sodium. Check with a doctor if you take other supplements or medication.
Where is the 21st Century Daily Amino Acid cheapest?: At Vitacost.com, for $9.99, as of our latest check.
What do buyers say about the 21st Century Daily Amino Acid?: Rated 4.7 out of 5 from 1,500 ratings.
Where can I buy the 21st Century Daily Amino Acid?: 3 stores we checked sell it, including 21st-century-vitamins, Vitacost.com, Walmart.

Stores we've priced the 21st Century Daily Amino Acid at

Walmart deals and prices

Gluten Free

Sodium Content

5 mg

Allergen Free

Gluten Free

Main Ingredient

Amino Acids

Contains

l-valine, dl-methionine, l-isoleucine, l-leucine, l-phenylalanine

Mineral Type

Calcium, Sodium

Ingredient Type

Amino Acids

Protein Type

Whey

Amino Acid Type

l-valine, dl-methionine, l-cysteine, l-histidine, l-isoleucine

Other Ingredients

Stearic acid, Cellulose

Container Type

Bottle

Age Group

ADULT

Gender

UNISEX

Special Diet

Gluten-free

Dietary Restrictions

Gluten-Free