NutriStack
Beta-Alanine and L-Citrulline, a synergy.
Beta-alanine and L-citrulline are frequently combined and may give complementary gains in high-intensity and endurance performance.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.
From the interaction database
What the row says.
Every entry follows the same shape: what is happening, the mechanism, the recommendation, and the primary literature.
At a glance
- Substances
- Beta-Alanine and L-Citrulline
- Pair type
- Synergy
- Evidence (highest tier)
- Moderate
- Source citations
- 1 source
- Stack Score effect
- +2 to your Stack Score (per scored synergy row).
- Scope
- Supplement × Supplement
- Last verified
- May 30, 2026
Synergy · Moderate evidence
Synergy
What is happening. Beta-alanine and L-citrulline are frequently combined and may give complementary gains in high-intensity and endurance performance.
Mechanism. Beta-alanine buffers intramuscular acidosis via carnosine while L-citrulline raises nitric oxide and improves blood flow and ammonia clearance, addressing different limiters of fatigue.
Recommendation. May be taken together pre-exercise, with no separation required.
Sources (1)
- Glenn JM et al, Effects of combined citrulline and beta-alanine supplementation on cycling performance, Journal of Strength and Conditioning Research, 2016
Stack Score
How this pair moves the number.
Effect on the composite score
If both Beta-Alanine and L-Citrulline are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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