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21st Century, Daily Amino Acid, Maximum Strength, 120 Tablets

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$2.25 (25)
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In Stock
  • Expiration Date: Nov 2019
  • Shipping Weight: 0.65 lbs (0.29 kg)
  • Product Code: CEN-22557
  • UPC Code: 740985225578
  • Package Quantity: 120 Tablets
  • Dimensions: 1.8 x 2.4 x 5.8 in, 0.55 lbs (0.25 kg)
Product Overview


  • Dietary Supplement
  • 20% Free
  • A Formula of Vital Amino Acids to Support Normal Muscle Tissue

21st Century offers the highest quality ingredients produced to strict standards for support of your good health.

Suggested Use

Take one (1) tablet daily with any meal for maximum results, or as directed by your healthcare provider. Do not exceed recommended dosage.

Other Ingredients

Whey, cellulose, stearic acid, croscarmellose sodium, silicon dioxide. Contains a milk ingredient (whey).

No added sugar, yeast, preservatives, artificial flavors or colors.


Before using this product, consult your healthcare provider if you are: pregnant or nursing, have a medical condition, taking any medications, or are planning any medical procedures. If any adverse reactions occur, discontinue use and consult your healthcare provider.

Keep out of reach of children.

Do not use if product appears to be tampered with or seal is broken. Store at room temperature.

Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving % DV
Calcium (as Dicalcium Phosphate and Calcium Carbonate) 150 mg 15%
L-Histidine 17 mg **
L-Isoleucine 63 mg **
L-Leucine 105 mg **
L-Lysine 93 mg **
dl-Methionine 21 mg **
L-Cysteine 11 mg **
L-Phenylalanine 32 mg **
L-Tyrosine 31 mg **
L-Threonine 69 mg **
L-Valine 58 mg **
** Daily Value (DV) not established.
iHerb Customer Reviews

Very good product

Posted by 4804934106350665283 on Dec 13, 2016

Take with breakfast, feel good, will continue to buy.

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Could not take

Posted by 4669693988845461808 on Apr 08, 2016

Sorry, i did not feel good after taking them.

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Posted by CherryNachiicha on Jan 21, 2016

Great product i think this help about body

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Posted by Susana on Mar 17, 2015

Lo tomo solo cuando hago deporte, va bien.

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troubles with proteins

Posted by 4827835572857625142 on Feb 06, 2015

because of my 86 yeays old,I took proteins supplements to get "back" muscles while training but it becomes hard to digest. Amino acids makes the same effects for muscles,with lighter digestion.

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