NutriStack
Symptom·Athletic·Reviewed May 30, 2026
Supplements for Exercise endurance decline.
When exercise endurance decline is the complaint, these are the supplements most often associated with it in the NutriStack library, ranked by how directly each one targets it and by the strength of the evidence.
Ranked by relevance, top first.
Relevance reflects how directly each supplement targets this symptom in the NutriStack map. Evidence is the supplement’s own rating. Open any name for the full profile.
- 01IronStrong86% match
Iron is required for hemoglobin and oxidative enzymes, so deficiency directly impairs oxygen delivery and aerobic endurance, especially in menstruating and endurance athletes.
SuggestedFerrous bisglycinate - 02Beta-AlanineStrong78% match
Beta-alanine raises muscle carnosine, buffering hydrogen ion accumulation and delaying fatigue during high-intensity efforts lasting roughly 1 to 4 minutes.
SuggestedSustained-release beta-alanine - 03L-CitrullineModerate72% match
L-citrulline raises plasma arginine and nitric oxide, which may improve blood flow and reduce fatigue, with supportive but mixed endurance and recovery data.
SuggestedCitrulline malate - 04Coenzyme Q10Limited64% match
CoQ10 is a mitochondrial electron-transport carrier and antioxidant; supplementation may modestly support aerobic capacity, mainly when baseline levels are low.
SuggestedUbiquinol - 05Rhodiola RoseaLimited60% match
Rhodiola is an adaptogen that may reduce perceived exertion and fatigue under stress, though effects on objective endurance measures are inconsistent.
SuggestedRhodiola rosea extract standardized to 3 percent rosavins - 06CordycepsLimited56% match
Cordyceps may improve oxygen utilization and VO2 measures in small studies, but evidence quality is low and effects appear modest.
SuggestedCordyceps militaris extract
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