Beta-Alanine

Moderate nutritional value

Beta-alanine powder that raises muscle carnosine; helps efforts of one to four minutes.

Beta-alanine is the limiting building block of carnosine, the buffer that slows the acid build-up in muscle during hard efforts. Over four or more weeks at 3-6 g a day carnosine rises enough to help efforts lasting roughly one to four minutes: rowing, middle-distance running, high-rep sets, interval work. It does little for a heavy set of five. Like creatine it works by accumulation, so timing does not matter. The harmless tingling of the skin after a larger dose is the known side effect; splitting the daily amount into smaller doses avoids it. It is not a protein amino acid and carries no meaningful energy at these doses.

As a supplement

Supplement page: dosing, interactions, lab tests →

Typical dose

3.2–6.4 g

2× a day

Times

With food

A usual adult range, not a national label — the dose and the timing differ by country and by product.

Used for

Physical performance
Energy

What to know while taking it

It is taken with food, and the daily amount is normally split through the day rather than swallowed at once. The usual effect of a large single dose is paraesthesia, a tingling or prickling of the face, neck and hands that begins soon after taking it and fades on its own; it is harmless, and splitting the dose or using a sustained-release form generally prevents it. Nothing here works fast: muscle carnosine accumulates over weeks, so judging the effect after a few days gives no useful answer.

When to see a doctor

Tingling that is painful, one-sided, or persistent rather than brief, or that comes with rash, swelling of the face or lips, or difficulty breathing, is not the expected reaction and is a reason to see a doctor.