Protocol·Athletic Performance·Intermediate·Reviewed June 9, 2026
Endurance & Aerobic Performance Protocol.
This protocol supports aerobic endurance by combining intramuscular pH buffering, nitric oxide mediated blood flow, mitochondrial energy transfer, and adequate oxygen carrying capacity. The aim is to raise the threshold at which fatigue limits sustained submaximal work, with several inputs treated as adjuncts given emerging or context dependent human evidence.
The endurance & aerobic performance protocol in brief.
A quick summary. The full stack, with dose and timing for each supplement, is below.
The Endurance & Aerobic Performance Protocol is an intermediate stack of 6 supplements aimed at athletic performance: Beta-Alanine, L-Citrulline, Iron, Coenzyme Q10, Rhodiola Rosea, and Taurine. 3 are core and the rest are optional add-ons, at roughly $35-55/mo. Each supplement below lists its dose, timing, role, and the evidence behind it.
What is in the endurance & aerobic performance protocol.
Dose, timing, role, and evidence tier for each supplement. Core items carry the protocol; optional ones are situational. Open any name for the full profile.
| Supplement | Dose | Timing | Role | Evidence |
|---|---|---|---|---|
| Beta-Alanine | 3.2-6.4 g daily, split into smaller doses of 0.8-1.6 g to limit paresthesia | Spread across the day with meals, taken consistently for at least 4 weeks to load muscle carnosine | Core | Strong |
| L-Citrulline | 6-8 g of L-Citrulline daily, or about 8 g of citrulline malate | About 60 minutes before training; on rest days take any time with or without food | Core | Moderate |
| Iron | Only if deficient, typically 30-65 mg of elemental iron daily or every other day, guided by ferritin and full blood count testing | Morning on an empty stomach if tolerated, with a vitamin C source; separate by at least 2 hours from calcium, coffee, and tea | Core | Strong |
| Coenzyme Q10 | 100-300 mg daily, ideally the ubiquinol form, taken with a fat containing meal | With breakfast or another meal containing dietary fat to aid absorption | Optional | Emerging |
| Rhodiola Rosea | 200-400 mg daily of an extract standardized to about 3 percent rosavins and 1 percent salidroside | 30 to 60 minutes before training or in the morning; avoid late evening because it can be mildly stimulating | Optional | Emerging |
| Taurine | 1-3 g per dose, up to about 6 g on a training day | 1 to 3 hours before endurance sessions; can also be taken with a meal on rest days | Optional | Moderate |
Beta-Alanine is the rate limiting precursor for muscle carnosine, an intracellular buffer that resists the pH drop caused by hydrogen ion accumulation during intense exercise. Chronic loading raises muscle carnosine and most reliably improves performance in high intensity efforts lasting roughly 1 to 4 minutes, with smaller and less consistent effects on longer aerobic events.
L-Citrulline is largely converted to L-arginine in the kidneys and raises plasma arginine more effectively than oral arginine, supporting nitric oxide synthesis, vasodilation, and oxygen and substrate delivery to working muscle. Human endurance evidence is moderate and most consistent for reduced perceived exertion and improved repeated effort capacity rather than large gains in maximal aerobic capacity.
Iron is essential for hemoglobin and myoglobin and for mitochondrial oxidative enzymes, so deficiency directly limits oxygen transport and aerobic capacity. Supplementation reliably improves endurance only when iron deficiency is confirmed by testing, and unnecessary use carries a risk of iron overload, so it should not be taken empirically.
Coenzyme Q10 shuttles electrons within the mitochondrial electron transport chain and acts as a lipid soluble antioxidant, supporting oxidative ATP production and helping to buffer exercise induced oxidative stress. Human endurance benefits are modest and inconsistent, so it is positioned as a supportive adjunct rather than a core ergogenic aid.
Rhodiola Rosea is an adaptogen thought to modulate the stress response and reduce perceived exertion and fatigue during endurance work, possibly by influencing catecholamine and central fatigue pathways. Human data are mixed and mostly short term, so it is included as an adjunct aimed at perceived effort rather than for confirmed physiological gains.
Taurine supports calcium handling and contractile function in muscle and contributes to cellular antioxidant defense, and may modestly aid substrate use during prolonged effort. Endurance evidence is moderate, with meta-analytic support for small improvements in time trial and time to exhaustion performance.
How the pieces combine.
The mechanistic rationale for stacking these together rather than taking them in isolation.
- Beta-Alanine buffers intracellular pH while L-Citrulline supports nitric oxide driven blood flow, so pairing pH buffering with improved oxygen and substrate delivery targets two independent limiters of sustained effort.
- Iron underpins oxygen transport and mitochondrial enzyme function, while Coenzyme Q10 supports electron transport downstream, so correcting iron status first (only when deficiency is confirmed) lets the oxidative chain that Coenzyme Q10 feeds actually deliver ATP.
- Separate Iron from coffee, tea, and calcium by at least 2 hours because these reduce iron absorption, and take Iron only after ferritin and blood count testing confirms deficiency to avoid iron overload.
- L-Citrulline before training and Rhodiola Rosea earlier in the day both aim to lower perceived exertion, so combine them pre-session and keep Rhodiola Rosea out of the late evening to protect sleep.
- Safety: if you are pregnant or breastfeeding, take prescription medication (for example blood pressure drugs, anticoagulants, antidepressants, or stimulants), or have a known iron, kidney, thyroid, or cardiovascular condition, consult your clinician before starting, since Iron, L-Citrulline, and Rhodiola Rosea can interact with some drugs and conditions.
Cost and commitment.
A rough monthly cost and how involved the protocol is to run.
The evidence behind it.
Overview citations for this protocol. Each supplement's own profile carries its full source list.
- Maughan RJ et al. IOC consensus statement: dietary supplements and the high-performance athlete. Br J Sports Med. 2018;52(7):439-455. PubMed
- Kerksick CM et al. ISSN exercise & sports nutrition review update: research & recommendations. J Int Soc Sports Nutr. 2018;15(1):38. PubMed
- Peeling P et al. Sports Foods and Dietary Supplements for Optimal Function and Performance Enhancement in Track-and-Field Athletes. Int J Sport Nutr Exerc Metab. 2019;29(2):198-209. PubMed
Common questions.
Quick answers drawn from the stack above.
What is in the Endurance & Aerobic Performance Protocol?
The Endurance & Aerobic Performance Protocol combines 6 supplements for athletic performance: Beta-Alanine, L-Citrulline, Iron, Coenzyme Q10, Rhodiola Rosea, and Taurine. 3 are core; the rest are optional.
How much does the Endurance & Aerobic Performance Protocol cost?
NutriStack estimates the Endurance & Aerobic Performance Protocol at about $35-55/mo, depending on the forms and brands you choose and whether you run the optional add-ons.
Is the Endurance & Aerobic Performance Protocol backed by evidence?
Each supplement in the protocol carries its own evidence tier (2 rated strong here) and links to PubMed-cited sources. NutriStack does not rank or score brands and takes no manufacturer payments; this is an informational reference, not medical advice.
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