Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Isoleucine is one of the three branched-chain amino acids (BCAAs), along with leucine and valine, commonly used as dietary supplements among athletes and individuals engaged in intense physical activity. The rationale for using isoleucine, either alone or as part of BCAA mixtures, is based on its role in muscle metabolism, energy production, and recovery after exercise. Research indicates that BCAAs can help reduce exercise-induced muscle damage, perceived muscle soreness, and central fatigue, although much of this effect appears to be due primarily to leucine, with isoleucine and valine playing supporting roles. Some studies suggest that isoleucine may help increase glucose uptake into muscle cells and contribute to energy production during prolonged exercise, but the evidence is not robust or specific to isoleucine alone.

Overall, most of the scientific support comes from studies on BCAA mixtures, which show modest benefits for muscle recovery and reduced fatigue, but the effects are generally small and may not be clinically significant for all athletes. Evidence specifically supporting isoleucine as a standalone supplement for athletic performance or recovery is limited. Therefore, while there is a scientific rationale and some evidence supporting the use of BCAAs (including isoleucine) as exercise aids, the direct evidence for isoleucine alone remains weak, justifying a modest rating of 2 out of 5 for the strength of evidence.

More about Isoleucine
More about Athletic and Exercise Aids

Other ingredients used for Athletic and Exercise Aids

1,3,7-Trimethylpurine-2,6-dione
7-Keto-DHEA
Acetyl L-carnitine
Acetyl-L-Tyrosine
adenosine 5-triphosphate disodium (ATP)
Adenosine triphosphate (ATP)
Agmatine
Algae
Algal protein
Alpha D-ribofuranose
Alpha glyceryl
Alpha hydroxyisocaproic acid
alpha-ketoglutarate (AKG)
Alpha-ketoisocaproic acid
amino acids
antler
arachidonic acid
arginine alpha ketoglutarate
Arginine aspartate
arginine creatine
Arginine malate
Arginine nitrate
Arginine silicate
ashwagandha
astaxanthin
ba ji tian
bacillus subtilis
BCAA
bee pollen
Beef Protein
beet
beta-alanine
bicarbonate
black ginger
black tea
bovine
bovine protein
branched-chain amino acids
brown rice protein
Bulbine natalensis
caffeine
Camellia sinensis
capsaicinoids
capsiate
capsicum
capsinoids
cardarine
casein
cistanche
citrate malate
cocoa
coconut
coenzyme Q10 (CoQ10)
collagen
colostrum
conjugated linoleic acid (CLA)
cordyceps
creatine
creatine monohydrate
curcumin
D-Aspartic Acid
D-Ribose
deer velvet
dihydrocapsiate
ecdysteroids
ecdysterone
electrolytes blend (proprietary)
eleuthero
elk antler
Ephedra
ephedrine
Ethyl-Alpha-Guanido-Methyl-Ethanoate
Eurycoma Longifolia
eurycomanone
Fadogia agrestis
ginseng
Ginsenosides
glucose
Glutamine
Glycerol
Glycocyamine
GMS-ribose
green tea
guanidinoacetic acid
guarana
Guaranine
guayusa
Higenamine
HMB hydroxymethylbutyrate
horny goat weed
hydroxymethylbutyrate
Isoleucine
isomaltulose
jiaogulan
ketone salts
kola nut
L-alanine
L-alanyl-L-glutamine
L-arginine
l-carnitine
L-citrulline
L-glutamine
L-glycine
l-isoleucine
L-leucine
L-ornithine
L-taurine
l-tyrosine
L-valine
lactalbumin
Laxogenin
maca
macaenes
macamides
magnesium
maral root
Mate
Methylliberine
Methylxanthine
Milk Protein
Mineral ascorbate
Muira puama
Mushroom
Nitrous Malate (TM) Diarginine Malate
omega-3 fatty acids
Ornithine
ornithine alpha-ketoglutarate
Palatinose
paraxanthine
Peppermint
Peptides
Phosphatidic Acid
Phosphocreatine
Phytoecdysteroid
Piper nigrum
protein
pyridoxal-5-phosphate (P-5-P)
pyrroloquinoline quinone
pyruvate
Quinoa Protein
Rhaponticum
Rhodiola
ribose
robusta coffee
Safed musli
salt
sea salt
Sida cordifolia
spirulina
suma
Synephrine
Teacrine
Theacrine
Theobromine
Tongkat ali
tribulus
Tribulus Terrestris
Trichilia catigua
Trichopus zeylanicus
Turkesterone
Valine alpha-hydroxyisocaproate
vitamin C
Watermelon
Whey protein
Xanthine
Yerba mate
Yohimbine

Other health conditions supported by Isoleucine

Athletic and Exercise Aids
Body Building
Muscle Tone (lack of)
Wasting

Products containing Isoleucine

We currently have no products on Vitabase that contain this ingredient.