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Beta-alanine · Strong evidence
What beta-alanine is for and how much to take
The short answer. Beta-alanine is not a stimulant: it is the limiting building block for muscle carnosine, and carnosine buffers the acidity that slows you down in a maximal effort of one to four minutes. That is why its effect depends on the dose accumulated over weeks and not on the serving before training. It is the most misunderstood pre-workout ingredient: you feel the tingling, the effect takes a month.
Several meta-analyses or position stands from scientific societies agree that there is an effect. No figure on this page is attributed to a specific product: the effect belongs to the ingredient and every number carries its source next to it.
01 What it does and how much
Each row is a measured effect, with the figure the study gives and the source number. Where the evidence gives no figure, the column says so instead of making up a percentage.
| Effect | How much | Detail |
|---|---|---|
| Daily dose | 4 to 6 g | Every day, whether you train or not. The carnosine store fills by accumulation, and a single dose before training does nothing. [1] |
| Time to effect | 2 to 4 weeks | This is the part pre-workout marketing skips: what you feel on day one is the tingling, not the performance. [1] |
| Efforts of 1 to 4 minutes | where it works | Long sets, rowing, swimming, CrossFit, 400 and 800 metres. It is the window where acidity is the limiting factor. [1] |
| Efforts under 60 seconds | little or nothing | There phosphocreatine rules, which is creatine’s territory. The two do not compete: they cover different stretches of effort. [1] |
| Paraesthesia (tingling) | from ~800 mg per serving | It is harmless and goes away on its own. It is avoided by splitting the daily dose into smaller servings or using sustained-release formats. [1] |
02 How to take it
- Dose. 4 to 6 g a day, split into 2 to 4 servings of 1 to 2 g.
- When. The time does not matter. What matters is not skipping days.
- How long before you notice it. 2 to 4 weeks to notice something; the store keeps rising up to 10-12 weeks.
Details that change the result
- The tingling is not a sign that it works. It is just one serving’s dose touching receptors in the skin.
- Splitting the dose removes the itch without reducing the effect, because what counts is the daily total.
- In a pre-workout, check the milligrams: many carry 1.5-2 g per serving, half or less of what you need a day.
- It is taken continuously. When you stop, the carnosine store falls slowly over several weeks.
03 When it makes sense and when it does not
Worth it if
- Sets to failure of 8 to 20 reps and metabolic gym work.
- CrossFit, rowing, swimming, track cycling, 400-800 metres: efforts of one to four minutes.
- Sports with repeated intervals and little recovery between them.
Not worth it if
- Pure maximal strength of one to three reps: there the lever is creatine.
- Long endurance of an hour or more, where acidity is not the limit.
- If you are only going to take it on training days: that way it never takes effect.
04 Sources
Every figure above comes from here. They are position stands from scientific societies, meta-analyses and peer-reviewed reviews: if a claim cannot hang from one of these lines, it is not on the page. References are cited in their original form.
- Trexler ET et al. ISSN position stand: Beta-Alanine. J Int Soc Sports Nutr. 2015;12:30. 4-6 g diarios durante 2-4 semanas; efecto en esfuerzos de 1 a 4 minutos; parestesia como efecto adverso habitual. doi:10.1186/s12970-015-0090-y
This is not medical advice. It is what some studies say about an ingredient, not a protocol for you. With an illness, medication or pregnancy involved, the decision belongs to a healthcare professional who knows you.
Questions about beta-alanine
Answered with the data on this page
- Does the tingling mean it is working?
- No. Paraesthesia appears from about 800 mg in a single serving and is a harmless skin reaction that passes within an hour. The real effect depends on carnosine accumulated in the muscle after weeks of daily use. You can have all the tingling in the world on day one and no effect yet.
- How much beta-alanine should you take a day?
- 4 to 6 g a day, every day, split into several servings of 1 to 2 g to avoid the tingling. What matters is the dose accumulated over at least two to four weeks: taking it only before training does nothing.
- Can you take it together with creatine?
- Yes, and they cover different things. Creatine works in maximal efforts under half a minute and beta-alanine in those of one to four minutes. They neither compete nor cancel each other out; they are two of the few supplements with solid evidence and they work through different routes.
- Is it safe to take beta-alanine long term?
- The ISSN position stand considers it safe in healthy people at usual doses, and the only common side effect is the tingling, which is temporary. As with any supplement, with an illness involved the decision is medical.
And now, which to buy
Prices, kept apart from the evidence
This page explains what beta-alanine does and deliberately names no brand. The comparison is the other half: 36 products from 9 stores from €22.36 per kg, sorted by price and by how verifiable their certification is.
Other guides
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