Evidence supporting the use of: L-arginine
For the body system: Male Reproductive System
Synopsis
Source of validity: Scientific
Rating (out of 5): 3
L-arginine is an amino acid that serves as a precursor to nitric oxide, a compound that relaxes blood vessels and improves blood flow. Its use to support the male reproductive system, particularly for erectile function, has a scientific basis. Several clinical studies have investigated L-arginine supplementation for erectile dysfunction (ED), a key aspect of male reproductive health. Some double-blind, placebo-controlled trials have shown that L-arginine (typically at doses of 2-5 grams daily) can improve erectile function in men with mild to moderate ED, likely by enhancing nitric oxide-mediated vasodilation in penile tissue. Meta-analyses suggest a modest benefit, especially when combined with other agents like pycnogenol; however, results are mixed, and not all studies show significant improvement.
There is less direct evidence supporting L-arginine for other aspects of male reproductive health, such as fertility or testosterone production, though some small studies have suggested potential benefits for sperm motility and count. Overall, the scientific evidence is moderate (rated 3/5), with reasonable mechanistic plausibility and clinical trial support for erectile function, but less robust or consistent data for broader reproductive health effects.
L-arginine is generally considered safe at recommended doses, though it may interact with certain medications (e.g., nitrates). More large-scale, well-controlled studies are needed to fully establish its efficacy and optimal use in supporting the male reproductive system.
Other ingredients that support Male Reproductive System
amino acidsashwagandha
aspartic acid
beta-sitosterol
sesame
boron
broccoli
caterpillar mushroom
cordyceps
cowage seed
d-alpha tocopherol
damiana
DHEA (dehydroepiandrosterone)
DIM (diindolylmethane)
fenugreek
folate
ginseng
gokhru
L-arginine
L-citrulline
lycopene
maca
magnesium
Melatonin
Muira puama
Nettle
parsley
pomegranate
protein
pumpkin
pygeum
rehmannia glutinosa
saffron
saw palmetto
selenium
black ginger
Tongkat ali
tribulus
velvet bean
vitamin B
vitamin D
vitamin E
Zinc
suma
anise
smilax
Caesalpinia crista
lingzhi
cistanche
dodder
royal jelly
equol (proprietary)
trace minerals
barrenwort
wheat germ
herbal blend (proprietary)
Yohimbe
antler
Angelica
Alchornea
avocado
Abuta
Allium tuberosum
anti-aromatase
animal protein
black seed
Butea monosperma
black galingale
Beef liver
Bulbine natalensis
Brazil nut
ba ji tian
Butea superba
bee products
Borassus aethiopum
Curculigo orchioides
Chinese mountain ant
Cucurbita
Cnidium
Clerodendrum phlomidis
Cynomorium
Chinese fleeceflower
Chinese pond turtle
Chlorophytum
cruciferous
Cyanotis vaga
catuaba
Crinum latifolium
Cyanotis arachnoides
DHEA
D-Aspartic Acid
deer velvet
date
eurycomanone
egg
Euryale seed
elk antler
Eurycoma Longifolia
folic acid
fo-ti
furostanols
fish
fatty acids
Fadogia agrestis
Ginsenosides
garden cress
Hygrophila
horny goat weed
Indian sarsparilla
icariin
Jatropha macrantha
Kigelia africana
Kokilaksha
Leptadenia
Loranthus
lipids
macamides
maral root
Massularia acuminata
Montanoa tomentosa
macaenes
Nigella seed
Nymphaea caerulea
Orchis latifolia
Osthole
Protodioscin
Pedalium
Rehmannia
Rhaponticum
Selenocysteine
Selenomethionine
Safed musli
Semecarpus anacardium
Shataverins
Shilajit
Trichilia catigua
Tribuloside
Tiger Nut
Tribulus Terrestris
Withanolides
Walnut
Yohimbine
Other body systems supported by L-arginine
ArteriesBlood
Capillaries
Circulatory System
Heart
Immune System
Male Reproductive System
Muscles
Pituitary
Pituitary (anterior)
Reproductive System
Veins
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Pure Encapsulations
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Designs For Health
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Nitric Oxide Support
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NOx Synergy™
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Ultra Glucose Control® Chocolate
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Ultra Glucose Control Vanilla
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UltraClear RENEW Detox Powder Berry
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UltraClear RENEW Detox Powder Chai
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UltraClear RENEW Detox Powder Vanilla
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UltraGI Replenish® Chocolate
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UltraInflamX Plus 360°® Chocolate/Orange
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UltraInflamX Plus 360° Original Spice
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UltraInflamX Plus 360° Pineapple/Banana
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UltraMeal Advanced Protein® Dutch Chocolate
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UltraMeal Advanced Protein Plain
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UltraMeal Cardio 360°® Pea/Rice Chocolate
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UltraMeal Cardio 360° Pea/Rice Vanilla