Amino Acids

4 products • sorted: organic → natural → fermentation → natural + synthetic → synthetic

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Ranked by organic → natural → fermentation → natural + synthetic → synthetic, then a numeric per-$1 ahead of an honest gap, then seed oil at the end of that group, then fewest additional ingredients, then highest amount per $1.

Natural

NOW Acetyl-L-Carnitine 500 mg veg capsules

NOW Foods

Silicon DioxideStearic Acid (vegetable source)Hypromellose (cellulose capsule)+1 more

$14.99

3,336 mg acetyl-L-carnitine per $1 spent

2 veg capsules

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Synthetic

N-Acetyl Cysteine (NAC) 600mg

NOW Foods

Hypromellose (cellul...stearic acid (vegeta...silicon dioxide

$17.99

6,670 mg NAC per $1 spent

1 capsule

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Synthetic

NOW L-Tyrosine 500 mg capsules

NOW Foods

Silicon DioxideStearic Acid (vegetable source)Hypromellose (cellulose capsule)

$18.42

2,714 mg L-tyrosine per $1 spent

1 capsule

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Synthetic

NOW L-Tryptophan 500 mg veg capsules

NOW Foods

Stearic Acid (vegetable source)Ascorbyl PalmitateHypromellose (cellulose capsule)+1 more

$19.26

2,596 mg L-tryptophan per $1 spent

1 capsule

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