supplement · Tracked item
L-arginine
Every recorded take from the experts Cited tracks — each with the exact quote, source, and timestamp.
▼ Broad caution
3 recommendations across 2 experts · 3 episodes
0 endorse
1 nuanced
2 avoid
Who's on the record
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Oral arginine has poor bioavailability and doesn't reliably increase nitric oxide, blood flow, muscle mass, or strength.
“oral arginine supplementation does not reliably increase nitric oxide or improve blood flow
TD▶ 25:00CaveatsMay aid wound healing via infusion (TPN) in clinical settings.Certaintyexplicitstrong warning -
Arginine supplementation not recommended due to poor oral bioavailability; take citrulline instead.
“arginine has very poor oral bioavailability
TD▶ 26:40Certaintyexplicitmild caution -
Arginine supports vasodilation for endurance, but can trigger cold sore (HSV-1) outbreaks in carriers.
“arginine and citrulline can lead to increases in cold sores
HL▶ 1:46:50CaveatsCan trigger herpes cold sore outbreaksCertaintyhedgedrecommendation