Meta Information
ID:beta-alanine
Name:
Schema Version:2.4_uniform_evidence_2026_06_18
Created
2026-05-21T22:30:00Z
Model
phase-a-upgrade-claude-sonnet-4.6
Interactions
Target id:
/intervention/taurine
Target name:
Taurine
Severity:
moderate
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
Hours before target:
0
Hours after target:
0
Description:
Beta-alanine and taurine compete for the same cellular transporter (TauT) for uptake into cells and reabsorption in the kidneys. Chronic high-dose beta-alanine supplementation can lead to taurine depletion.
Actionable advice:
Consider supplementing with taurine (at a different time of day) or cycling beta-alanine use to prevent potential depletion.
Validation status:
validated_via_pubmed
Evidence tier:
tier_b
Evidence basis:
pubmed_abstract_verbatim
Evidence anchors:
Source url:
Exact phrase from label:
A taurine/beta-alanine transporter was cloned from a mouse brain cDNA library by screening with a partial cDNA probe of the glycine transporter at low stringency. The deduced amino acid sequence predicts 590 amino acids with typical characteristics of the sodium-dependent neurotransmitter transporters such as sequence homology and membrane topography.
Label source:
PubMed: Proceedings of the National Academy of Sciences of the United States of America (1992)
Source url:
Exact phrase from label:
High (20 mmol/l) concentrations of taurine or beta-alanine in perfusate completely inhibited GABA reabsorption, but L-phenylalanine (20 mmol/l) had no significant effect. The results indicate that the three amino acids are reabsorbed slowly from the proximal tubule by what may be a common transport system.
Label source:
PubMed: Pflugers Archiv : European journal of physiology (1976)
Action type:
informational_none
Target id:
/intervention/creatine
Target name:
Creatine
Severity:
moderate
Interaction type:
synergistic
Nature:
absolute
Temporal spacing:
Hours before target:
0
Hours after target:
0
Description:
Beta-alanine increases muscle carnosine to buffer acid and improve endurance, while creatine increases phosphocreatine stores for power output. They work via complementary mechanisms to improve overall exercise performance.
Actionable advice:
They are best taken together to synergistically enhance both muscular endurance and high-intensity strength performance.
Validation status:
validated_via_primary_literature
Evidence tier:
tier_b
Evidence basis:
primary_literature_verbatim
Evidence anchors:
Source url:
Exact phrase from label:
Beta-alanine, when combined with the amino acid histidine, elevates intramuscular carnosine, which acts as a buffer in skeletal muscles and delays fatigue during high-intensity exercise by neutralizing hydrogen ions.
Label source:
PubMed: The Top 5 Can't-Miss Sport Supplements. (PMID 39408214)
Action type:
informational_none
Target id:
/intervention/high-intensity-interval-training
Target name:
High-Intensity Exercise
Severity:
major
Interaction type:
synergistic
Nature:
absolute
Temporal spacing:
Hours before target:
0
Hours after target:
0
Description:
The primary benefit of beta-alanine is increasing muscle carnosine, which acts as an intracellular buffer against acid (H+) buildup during intense anaerobic exercise lasting from 60 seconds to 10 minutes.
Actionable advice:
Beta-alanine is most effective for improving performance in high-intensity activities like HIIT, sprinting, and resistance training.
Validation status:
validated_via_primary_literature
Evidence tier:
tier_b
Evidence basis:
primary_literature_verbatim
Evidence anchors:
Source url:
Exact phrase from label:
Supplementing beta-alanine has been shown to significantly increase skeletal muscle carnosine.
Label source:
PubMed: The effect of beta-alanine supplementation on neuromuscular fatigue in elderly (55-92 Years): a double-blind randomized study. (PMID 18992136)
Action type:
informational_none
Target id:
/dietary/high-protein-meal
Target name:
Protein-Rich Foods (providing Histidine)
Severity:
moderate
Interaction type:
requirement
Nature:
absolute
Temporal spacing:
Hours before target:
0
Hours after target:
0
Description:
Beta-alanine is the rate-limiting precursor to carnosine synthesis, but it requires the essential amino acid L-histidine to form the final dipeptide in muscle tissue.
Actionable advice:
It is a good idea to maintain adequate daily protein intake from food or supplements, as a lack of histidine will render beta-alanine ineffective.
Validation status:
validated_via_pubmed
Evidence tier:
tier_b
Evidence basis:
pubmed_abstract_verbatim
Evidence anchors:
Source url:
Exact phrase from label:
Carnosine is a dipeptide composed of β-alanine and L-histidine and is present in skeletal muscle. Chronic oral β-alanine supplementation can induce muscle carnosine loading and is therefore seen as the rate-limiting factor for carnosine synthesis.
Label source:
PubMed: Medicine and science in sports and exercise (2017)
Source url:
Exact phrase from label:
Carnosine is synthesized in skeletal muscle from the amino acids l-histidine and beta-alanine. The rate-limiting factor of carnosine synthesis is beta-alanine availability.
Label source:
PubMed: Medicine and science in sports and exercise (2010)
Source url:
Exact phrase from label:
Histidine is required as a precursor of carnosine in human muscle and parts of the brain where carnosine appears to play an important role as a buffer and antioxidant. It is synthesized in the tissue by carnosine synthase from histidine and β-alanine, at the expense of ATP hydrolysis.
Label source:
PubMed: The Journal of nutrition (2020)
Action type:
informational_none
Target id:
/condition/pregnancy
Target name:
Pregnancy
Severity:
major
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
Hours before target:
0
Hours after target:
0
Description:
The safety of beta-alanine supplementation during pregnancy has not been established through clinical research and is therefore not recommended.
Actionable advice:
Beta-alanine should be avoided completely during pregnancy.
Validation status:
anecdotal
Evidence tier:
tier_d
Evidence basis:
anecdotal_summary
Evidence anchors:
Exact phrase from label:
There is not enough reliable information about the safety of taking beta-alanine if you are pregnant or breast-feeding. Stay on the safe side and avoid use.
Label source:
Anecdotal: RxList
Action type:
avoid
Target id:
/condition/lactation
Target name:
Breastfeeding (Lactation)
Severity:
major
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
Hours before target:
0
Hours after target:
0
Description:
It is unknown if beta-alanine or its metabolites pass into breast milk or what effects they might have on an infant; its use is not recommended while breastfeeding.
Actionable advice:
Beta-alanine should be avoided completely while breastfeeding.
Validation status:
anecdotal
Evidence tier:
tier_d
Evidence basis:
anecdotal_summary
Evidence anchors:
Exact phrase from label:
There is not enough reliable information about the safety of taking beta-alanine if you are pregnant or breast-feeding.
Label source:
Anecdotal: RxList
Action type:
avoid
Target id:
/dietary/meal
Target name:
Any Meal
Severity:
minor
Interaction type:
synergistic
Nature:
temporal
Temporal spacing:
Hours before target:
0
Hours after target:
0
Description:
Taking beta-alanine with food may enhance muscle carnosine loading, possibly due to the insulin response aiding transport into muscle cells. It can also mitigate the tingling sensation (paresthesia).
Actionable advice:
Beta-alanine doses are generally best taken with a meal to potentially improve absorption and reduce side effects.
Validation status:
validated_via_pubmed
Evidence tier:
tier_b
Evidence basis:
pubmed_abstract_verbatim
Evidence anchors:
Source url:
Exact phrase from label:
Second, in soleus muscles, the efficiency of carnosine loading is significantly higher when PBA is coingested with a meal (+64%) compared with in between the meals (+41%), suggesting that insulin stimulates muscle carnosine loading.
Label source:
PubMed: Medicine and science in sports and exercise (2013)
Source url:
Exact phrase from label:
Hyperinsulinemia did not increase β-alanine uptake by skeletal muscle cells, neither when substrate concentrations exceed the Vmax of β-alanine transporter TauT nor when it was below saturation. These results suggest that increasing insulin concentration is not necessary to maximize β-alanine transport into muscle following β-alanine intake.
Label source:
PubMed: American journal of physiology. Cell physiology (2020)
Source url:
Exact phrase from label:
In conclusion, β-alanine intake for four weeks, either alone or with glucose co-ingestion, equally increased muscle carnosine content. It appears that the potential insulin response to fluid glucose intake does not affect muscle carnosine loading in male rats.
Label source:
PubMed: Journal of dietary supplements (2017)
Action type:
informational_none
Target id:
/condition/renal-impairment
Target name:
Renal Impairment
Severity:
moderate
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
Hours before target:
0
Hours after target:
0
Description:
Beta-alanine and its metabolites are cleared by the kidneys. Impaired renal function could lead to their accumulation, though the clinical significance is not well-defined.
Actionable advice:
It is important to consult a physician before using beta-alanine for those with any known kidney disease.
Validation status:
validated_via_clinical_guidance
Evidence tier:
tier_b
Evidence basis:
clinical_guidance_verbatim
Evidence anchors:
Source url:
Exact phrase from label:
Beta-alanine supplementation currently appears to be safe in healthy populations at recommended doses
Label source:
Clinical guidance: ISSN Position Stand on Beta-Alanine (Trexler et al. J Int Soc Sports Nutr 2015;12:30)
Action type:
informational_none
Target id:
/intervention/sodium-bicarbonate
Target name:
Sodium Bicarbonate
Severity:
minor
Interaction type:
synergistic
Nature:
absolute
Temporal spacing:
Hours before target:
0
Hours after target:
0
Description:
Beta-alanine works as an intracellular buffer (via carnosine), while sodium bicarbonate is an extracellular buffer. Their combined use may provide an additive effect in buffering exercise-induced acidosis.
Actionable advice:
Combining with sodium bicarbonate may further enhance performance, but be mindful of potential GI distress from bicarbonate.
Validation status:
validated_via_primary_literature
Evidence tier:
tier_b
Evidence basis:
primary_literature_verbatim
Evidence anchors:
Source url:
Exact phrase from label:
PURPOSE: To examine the effect of beta-alanine only and beta-alanine with sodium bicarbonate supplementation on 2,000-m rowing performance.
Label source:
PubMed: Effect of beta-alanine, with and without sodium bicarbonate, on 2000-m rowing performance. (PMID 23535873)
Action type:
informational_none
Target id:
/intervention/dietary-nitrate
Target name:
Dietary Nitrates (e.g., Beetroot Juice)
Severity:
minor
Interaction type:
synergistic
Nature:
absolute
Temporal spacing:
Hours before target:
0
Hours after target:
0
Description:
Beta-alanine enhances muscular endurance via buffering capacity, while nitrates improve metabolic efficiency and blood flow via nitric oxide production. They target different physiological pathways for performance enhancement.
Actionable advice:
Consider combining with a nitrate source like beetroot juice for complementary benefits in exercise performance.
Validation status:
validated_via_pubmed
Evidence tier:
tier_b
Evidence basis:
pubmed_abstract_verbatim
Evidence anchors:
Source url:
Exact phrase from label:
Beta-alanine, when combined with the amino acid histidine, elevates intramuscular carnosine, which acts as a buffer in skeletal muscles and delays fatigue during high-intensity exercise by neutralizing hydrogen ions. Individuals usually take 2-6 g daily in divided doses to minimize paresthesia. Research shows significant performance improvements in activities lasting 1-4 min. Nitrates, found in beetroot juice, enhance aerobic performance by increasing oxygen delivery to muscles, enhancing endurance, and reducing oxygen cost during exercise.
Label source:
PubMed: Nutrients (2024)
Source url:
Exact phrase from label:
Supplements such as beta-alanine, caffeine, carbohydrates, carnitine, creatine monohydrate, dietary nitrates, electrolytes, exogenous ketones, N-acetylcysteine and sodium bicarbonate support these energy systems by improving substrate utilization, buffering capacity, energy availability or resistance to fatigue.
Label source:
PubMed: Journal of the International Society of Sports Nutrition (2026)
Source url:
Exact phrase from label:
Bodybuilders or sprinters ("anaerobic" athletes) need a high-protein diet (HPD) in order to activate muscle protein synthesis after exercise-induced muscle damage and use nitric oxide enhancers (such as citrulline and nitrates) to increase vasodilatation, whereas endurance athletes, such as runners or cyclists ("aerobic" athletes), prefer a high-carbohydrate diet (HCHD), which aims to restore the intramuscular glycogen, and supplements containing buffering agents (such as sodium bicarbonate and beta-alanine).
Label source:
PubMed: Nutrients (2023)
Action type:
informational_none
Target id:
/class/benzodiazepines
Target name:
GABAergic Medications (e.g., Benzodiazepines)
Severity:
minor
Interaction type:
adverse
Nature:
absolute
Temporal spacing:
Hours before target:
0
Hours after target:
0
Description:
Beta-alanine has weak agonist activity at GABA receptors, which is responsible for the tingling side effect. There is a theoretical risk of additive effects like sedation when combined with other GABA-acting drugs.
Actionable advice:
This is best used with caution, and it is worth monitoring for increased drowsiness when taken alongside medications like benzodiazepines.
Validation status:
validated_via_primary_literature
Evidence tier:
tier_b
Evidence basis:
primary_literature_verbatim
Evidence anchors:
Exact phrase from label:
The endogenous orthosteric agonists GABA, β-alanine, and taurine have relatively similar gating efficacies
Label source:
Action type:
monitor