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Essential amino acids, supplement-manufacturer recommended dosages compared to health-authority recommended daily intake
 
A

Amino Acid
B
 
Range,
average
of
supplement
manufacturer
recommended
dosages in mg
per day
C
 
Range,
average from col B,
of supplement
manufacturer
recommended
dosages
in mg per kg body
wt (estimated*)
D
 
Mg per kg
recommended
daily intake
E
 
Range,
average
of supplement
manufacturer
recommended
dosages
in mg per kg body
wt (estimated*)
excluding dosage
recommendations
that are more than twice 
the average in column
F
 
Range,
average from col E,
of supplement
recommended
dosages
in mg per kg body
wt (estimated*)
 

 
G
 
Numbers in
column F as
percentage
of numbers
in column D








Leucine
750-5500
1100
10-76
15
39
750-1250
1063
10-17
15
26%-44%
38%








Lysine
500-2000
1050
7-28
15
30
500-2000
1050
7-28
15
23%-93%
50%








Methionine/
Cysteine
Methionine
500-563
513
Cysteine
500-1250
925
------------------
total
1000-1813
1438
Methionine
7-8
7
Cysteine
7-17
13
---------------------
total
14-25
20
Methionine &
Cysteine:
15
Methionine
500-563
513
Cysteine
500-1250
925
------------------
total
1000-1813
1438
Methionine
7-8
7
Cysteine
7-17
13
---------------------
total
14-25
20
total methionine
& cysteine
93%-167%
133%








Phenylalaline/
Tyrosine
Phenylalanine
500-1850
850
Tyrosine
500-750
550
-----------------
total
1000-2600
1400
Phenylalanine
7-26
12
Tyrosine
7-10
8
------------------
total
14-36
20
Phenylalaline &
Tyrosine:
25
Phenylalanine
500-1850
850
Tyrosine
500-750
550
-----------------
total
1000-2600
1400
Phenylalanine
7-26
12
Tyrosine
7-10
8
------------------
total
14-36
20
total
phenylalaline &
tyrosine
56%-144%
80%








Valine
412-2500
1353
6-35
19
26
412-2500
1353
6-35
19
23%-135%
73%








Threonine
 
500-2000
850
7-28
12
15
500-750
563
7-10
8
47%-67%
53%








Isoleucine
1000-4500
1920
14-63
27
20
600-2500
1275
8-35
18
40%-175%
90%








Histidine
500-3600
1108
7-50
15
10
440-500
485
6-7
7
60%-70%
70%








Tryptophan
750-4500
1607
10-63
22
04
750-1786
1197
10-25
17
250%-625%
425%








Total
average





69%-169%;
112%























 
* based on 72 kg average weight of 35 year old US white males/females (http://www.halls.md/chart/women-weight-w.htm)
 
Sources:
 
The number of mgs per day of an amino acid recommended by (usually) the supplement manufacturer is given along with a link to the page at which the quantity of intake is suggested. Intake suggestions that far exceeded the average and were excluded from consideration in columns E and F are shown in light-face type
 
--------------------
Leucine
range 750-5500
avg 1100
bizarre = 5.5 times average
corrected range 750-1250
avg 1063
 
750 mg
Therapeutic use of leucine occurs at doses between 500 and 1000 mg per day.
http://www.springboard4health.com/notebook/proteins_leucine.html
 
1250 mg Source Naturals
http://www.vitacost.com/Source-Naturals-L-Leucine-500-mg-120-Capsules?csrc=GPF-021078020530
 
source naturals 1250 mg
https://www.evitaminstore.com/L-Leucine-62187.html
 
pure bulk 5500 mg  99% pure
http://purebulk.com/lleucine-250g-p-166.html
 
Montiff's 1000 mg
http://www.houseofnutrition.com/leuc2.html?ovchn=FRO&ovcpn=Froogle&ovcrn=Montiff's+Pure+L-Leucine+500+mg+50+caps&ovtac=CMP
 
16 mg per day, 1120 mg
The daily dosage of leucine is about 16 mg per kilogram of body weight per day - which would translate to about 1120 mg for a 70 kg male. See good combinations as well.
 
--------------------
Lysine 30 mg per kg
range 500-2000
avg 1050
750 mg
http://www.puritan.com/l-lysine-525/l-lysine-500-mg-034487 
here 2000 mg per day lysine is recced dose
http://bio-alternatives.net/lysine.htm?gclid=CKnDtdmIkZsCFQdN5QodsXxIoQ
 
750 mg
http://www.evitaminstore.com/L-Lysine-60725.html
 
1000 mg
http://www.vitacost.com/Twinlab-L-Lysine?csrc=GPF-027434001410
 
1000 mg
http://www.herbalremedies.com/l-lysine-500-mg-100-tablets.html
 
--------------------
Methionine 15 mg per kg includes cysteine
http://www.evitaminstore.com/Supplements/Amino-Acids/L-Methionine/L-Methionine-10577.html
 
range 500-563
avg 513
 
swanson 500 mg do not exceed
http://www.swansonvitamins.com/SW1121/ItemDetail?SourceCode=INTL078&CAWELAID=129500024
 
source naturals 563 mg
http://www.evitaminstore.com/L-Methionine-1-Powder-60731.html
 
twinlab 500 mg
http://www.evitaminstore.com/L-Methionine-500-Mg-12903.html
 
puritan's pride 500 mg per day
http://www.puritan.com/amino-acid-supplements-082/l-methionine-500-mg-000140
 
nutricology 500 mg
http://www.evitaminstore.com/L-Methionine-500-Mg-11398.html
--------------------
 
Cysteine mg per kg is part of methionine
N-Acetyl Cysteine (NAC) - eVitaminStore
http://www.evitaminstore.com/Supplements/Antioxidants/N-Acetyl-Cysteine-NAC-/N-Acetyl-Cysteine-NAC-10597.html
 
range 500-1250
avg 925
 
purtian's pride 500 mg per day
http://www.puritan.com/amino-acid-supplements-082/l-cysteine-500-mg-000100
 
nutricology 1000 mg
https://www.evitaminstore.com/NAC-N-Acetyl-Cysteine-11413.html
 
source naturals 1200 mg
http://www.evitaminstore.com/N-Acetyl-Cysteine-61272.html
 
food sciences vermont 1250 mg
http://www.evitaminstore.com/N-Acetyl-Cysteine-26906.html
 
twinlab 600 mg
http://www.evitaminstore.com/NAC-N-Acetyl-Cysteine-12963.html
 
1000 mg
http://bio-alternatives.net/cysteine.htm
--------------------

Phenylalanine
 
range 500-1500
avg 850
 
500 mg per day
http://www.puritan.com/amino-acid-supplements-082/dl-phenylalanine-500-mg-004050
 
twinlab 500 mg
http://www.evitaminstore.com/DLPA-500-Mg-12813.html
 
source naturals 1500 mg
http://www.evitaminstore.com/L-Phenylalanine-60742.html
 
food science of vermont 750 mg
http://www.evitaminstore.com/DL-Phenylalanine-91437.html
 
Thomson  1000 mg
http://www.evitaminstore.com/Supplements/Amino-Acids/L-Phenylalanine/L-Phenylalanine-10579.html
 
--------------------
 
Tyrosine
http://www.evitaminstore.com/Supplements/Amino-Acids/L-Tyrosine/L-Tyrosine-10583.html
 
range 500-750
average 550
 
500 mg source naturals
http://www.evitaminstore.com/L-Tyrosine-60769.html
 
500 mg twinlabs
http://www.evitaminstore.com/L-Tyrosine-500-mg-12906.html
 
750 mg food sciences
http://www.evitaminstore.com/Tyrosine-500-mg-86596.html
 
500 mg nutricology
http://www.evitaminstore.com/L-Tyrosine-500mg-91964.html
 
500 mg thompson
http://www.evitaminstore.com/L-Tyrosine-500mg-92173.html
 
--------------------
Valine
 
range 412-2500
avg 1353
412 mg source naturals
http://www.evitaminstore.com/L-Valine-1-32-g-Powder-60760.html
 
2500 mg pure bulk pure powder
http://purebulk.com/lvaline-100g-p-326.html
 
montiffs 1000 mg
http://www.easyhealthzone.com/ProductDetails.asp?ProductCode=K550&click=2
 
nutrabio 1500 mg
http://cgi.ebay.com/L-VALINE-FREE-FORM-AMINO-ACID-(500mg-Capsules%2f150-caps)_W0QQitemZ220330026538QQcmdZViewItem
--------------------
 
Threonine
 
range 500-2000
avg 850
 
corrected range, 500-750 avg 563
 
500 mg douglas labs
http://organicpharmacy.org/products/L-Threonine.500.Mg*?gclid=CNzawYiYkZsCFQxM5QodciDzqQ
 
500 mg solgar
http://www.luckyvitamin.com/item/itemKey/68281?utm_source=googlebase&utm_medium=fpl&utm_term=SolgarLThreonine500mg100VegetarianCapsules&utm_content=68281&utm_campaign=googlebase&site=google_base
 
500 mg freeda
http://www.koshervitamins.com/shop/stores_app/Browse_Item_Details.asp?Item_ID=269&zmam=83101301&zmas=1&zmac=2&zmap=FR-0288
 
2000 mg carlson
http://www.iherb.com/Carlson-Labs-L-Threonine-Amino-Acid-Powder-100-g/8499?utm_source=g&utm_medium=x&at=0
 
750 mg montiff
http://www.naturalnutritionals.com/thre3.html
 
--------------------

Isoleucine
 
range 1000-4500
avg 1920
 
corrected range and avg, 600-2500, 1275
 
2500 mg purebulk  pure powder
http://purebulk.com/lisoleucine-250g-p-317.html
 
montiff 1000 mg
http://www.houseofnutrition.com/isol2.html?ovchn=FRO&ovcpn=Froogle&ovcrn=Montiff's+Pure+L-Isoleucine+500+mg+50+caps&ovtac=CMP
 
pure 1000 mg
http://www.drugnatural.com/p/669053
 
nutrabio 4500 mg (the powder is pure isoleucine)
http://cgi.ebay.com/L-ISOLEUCINE-FREE-FORM-BCAA-AMINO-ACID-POWDER---500-GR-_W0QQitemZ220319381789QQcmdZViewItem
 
600 mg bcaa (combined with a couple of others)
http://cgi.ebay.com/6x-Bio-BCAA-Amino-Acids-L-Valine-L-Leucine-Isoleucine_W0QQitemZ350182703939QQcmdZViewItem
--------------------

Histidine
 
range 500-3600
avg 1108
corrected range and avg
440-500
485
 
twinlabs 500 mg
http://www.evitaminstore.com/L-Histidine-12899.html
 
douglas labs 500 mg
http://www.doctorproline.com/l-histidine-500-mg-60-caps-douglas-labs.html
 
scifit 440 mg
http://www.healthsuperstore.com/p-scifit-beta-alanine-2000-w-l-histidine-300g.htm
 
montiff 3600 mg
http://www.naturalnutritionals.com/hist3.html
 
new roots herbal 500 mg
http://www.nationalnutrition.ca/detail.aspx?ID=2286
 
--------------------

tTryptophan 
http://www.evitaminstore.com/Supplements/L-Tryptophan/L-Tryptophan-10582-p-1.html
 
range 750-4500
avg 1607 mg
 
corrected range, avg
750-1786
1197
 
source naturals 4500 mg
http://www.evitaminstore.com/L-Tryptophan-with-Coenzyme-B-6-94731.html
 
maxi l tryptophan 750 mg
http://www.evitaminstore.com/Maxi-L-Tryptophan-500-82255.html
 
NSI 1000 mg
http://www.vitacost.com/NSI-L-Tryptophan-500-mg-60-Vegetarian-Capsules?csrc=GPF-835003008575
 
Now Foods 1786 mg
http://www.iherb.com/now-foods-l-tryptophan-powder-2-oz-57-g/13403?utm_source=gb&utm_medium=f3&at=0
 
California Natural 1250 mg
http://www.luckyvitamin.com/item/itemKey/73228?utm_source=googlebase&utm_medium=fpl&utm_term=CaliforniaNaturalLTryptophan500mg30Capsules&utm_content=73228&utm_campaign=googlebase&site=google_base
 
 
@2009 David Virgil Hobbs