Beta-alanine is one of the more popular pre-workout supplements, but how does it actually work? Read on to find out.


Take this supplement and you’ll be able to train harder.

Train harder and you’ll build more muscle and strength.

Build more muscle and strength and you’ll reach your goals faster.

The pitch sounds alluring…and familiar…right?

It’s how pre-workout supplements (among others) are sold, of course.

And these days, many of the most popular pre-workout supplements contain beta-alanine and spotlight it as a key component.

What exactly is beta-alanine, though? What are its benefits and side effects? How much do you have to take to see results? And what’s the best way to supplement with it?

Well, if you want answers to those questions, you’ve come to the right place.

Let’s start at the top.

What is Beta-Alanine?

what is Beta-Alanine

Beta-alanine is a nonessential amino acid, which means it isn’t a necessary part of the human diet because our bodies can create it.

(The amino acids the body can’t create are known as essential amino acids, and they must be obtained through the diet.)

Your body primarily uses beta-alanine to form a compound molecule called carnosine, which is stored in your muscles and brain. It does this by combining beta-alanine with an essential amino acid, L-histidine.

Now, one of carnosine’s roles in our muscles relates to the regulation of acidity levels.

When a muscle contracts repeatedly, it becomes more and more acidic. This, in turn, impairs its ability to continue contracting, until eventually it can no longer contract at all.

This is one of the ways muscles become fatigued.

Carnosine counteracts this by reducing muscle acidity, thereby increasing the amount of work the muscles can do before they become fatigued.

Why Do People Supplement With Beta-Alanine?

beta-alanine supplements

While there are many ways a muscle can fatigue during a workout, by targeting just one (acidity), performance can be enhanced.

Well, beta-alanine is a popular supplement because it gets converted into carnosine in the body, which then accumulates in the muscles.

This, in turn, increases the amount of work they can do before crapping out.

The mechanism whereby beta-alanine enhances performance is similar to that of sodium bicarbonate.

Beta-alanine beats sodium bicarbonate for practicality though because it doesn’t upset your stomach and it doesn’t require that you ingest near-dangerous levels to see benefits.

Now, why not supplement with carnosine directly instead, you wonder?

Because when consumed, carnosine doesn’t make its way to your muscles intact. It gets broken down into its constituent parts, beta-alanine and L-histidine, which then must be reconstituted back into carnosine.

Furthermore, our bodies have plenty of free L-histidine available to create carnosine. What they’re lacking is the extra beta-alanine needed.

And that’s why we supplement with just beta-alanine and not carnosine or beta-alanine and L-histidine separately.

What Are the Benefits of Beta-Alanine?

beta-alanine benefits

Beta-alanine’s major benefits lie in improving physical endurance and possibly body composition as well.

It’s also thought to have some health benefits but the studies are so preliminary at the moment that we’ll leave it as a passing thought.

In terms of improving endurance, beta-alanine is clearly beneficial but–like all supplements–isn’t a miracle molecule by any stretch of the imagination.

One rather impressive meta-analysis conducted in 2012 involved an in-depth review of 15 studies on beta-alanine as an ergogenic aid (performance enhancer).

Researchers found that beta-alanine supplementation resulted in a minor but statistically significant improvement in endurance (2.85%) when the exercise duration was between 60 and 240s (the duration you see in supersetting, Crossfit-style workouts, and the like).

And while beta-alanine tended to improve exercise lasting less than a minute or greater than three minutes in duration, the magnitude was very small and was not statistically significant.

That is, it’s not particularly helpful with relatively short or long bouts of exercise.

This is why many weightlifters take both beta-alanine and creatine, which notably improves performance in the sub-60-second realm and slightly improves performance in the 60-to-240-second realm.

In this way, they’re “covered” for everything they’re going to be doing in the weight room.

And as a quick aside, while both beta-alanine and creatine are found in many pre-workout supplements, research shows creatine is best taken post-workout.

There’s also evidence that ingesting caffeine with creatine may interfere with its effects.

That’s why we decided to “play it safe” and include creatine in our post-workout supplement, not our pre-workout.

As for beta-alanine and muscle growth there are a few studies that note that even when performance between groups is controlled for (ie. same amount of work done for each group), it’s associated with more muscle growth.

That is, despite following the same types of diets and workout programs, people that supplement with beta-alanine seem to gain more muscle than those that don’t.

This effect doesn’t appear to be merely a byproduct of improved workout performance, either.

We don’t know exactly why just yet, but beta-alanine supplementation appears to directly (albeit slightly) augment muscle growth.

What’s the Clinically Effective Dosage of Beta-Alanine?

beta-alanine dosage

“The what?” you might be thinking.

The clinically effective dosage of a supplement is the amount used in the scientific studies proving the benefits.

You see, it’s not enough to just know that beta-alanine can improve performance. You need to know how much is needed to get its benefits.

Well, the amount of beta-alanine used in clinical studies showing benefits ranges from 2 to 4.8 grams.

When you look at the data, 4.8 grams is slightly more effective than 2 grams but there isn’t too much of a difference when the supplement is taken every day.

Like creatine, beta-alanine also seems to benefit from a “loading phase,” which allows it to accumulate carnosine in the muscles faster.

In this way, a higher dosage allows you to realize the benefits faster.

It’s also worth noting that it’s generally thought that people doing higher volume weightlifting programs may benefit from the upper end of the clinically effective range of beta-alanine.

This is because carnosine stores are depleted during muscle contractions so, naturally, the more you contract your muscles (workout), the more carnosine your body “uses.”

Although plausible, this theory hasn’t been demonstrated in scientific research yet.

Oh and in case you’re wondering…beta-alanine doesn’t need to be cycled.

What Types of Results Should I Expect From Beta-Alanine?

beta-alanine results

Like all natural supplements, don’t pin unrealistically high expectations on beta-alanine.

Remember that supplements don’t build great physiques–dedication to proper training and nutrition does.

That said, here’s what you can expect from beta-alanine supplementation:

  • A slight increase in the amount of volume you’re able to do in your weightlifting workouts.
  • A slight increase in the amount of work you’re able to do in superset exercises.
  • A very slight increase in muscle growth over time (not as noticeable as creatine in this regard).

If that doesn’t sound all that sexy to you, I understand. I’m just calling it like it is.

That said, it doesn’t mean you shouldn’t supplement with beta-alanine. It just means you shouldn’t supplement only with beta-alanine if you really want to see improvements.

The same can be said about most natural supplements.

By themselves, individually, they are underwhelming. Take the right ones together, though, and the cumulative effects can become noticeable.

For example, while beta-alanine may only improve your weightlifting performance by, let’s say, 3 to 5%, if you combine it with several other ingredients with similar effects, you’re now looking at a 15 to 20% boost in your workouts.

And that’s enough to matter if you also consistently train hard and eat right.

The same goes for fat loss supplements.

While supplements like caffeine, synephrine, and yohimbine are all proven “fat burners,” they’re most effective when combined.

Does Beta-Alanine Have Any Side Effects?

beta-alanine side effects

First…get ready for the tingles.

Beta-alanine is known to cause something known as paresthesia which, despite sounding ominous, is a harmless condition where the outer layer of your skin tingles.

The most common place to get beta-alanine tingles is in the face but it can occur elsewhere as well.

Some people dislike the tingling or are alarmed by it (if they’re not expecting it) but then grow oddly fond of the prickling sensation as time goes on.

Raises hand.

If you don’t get tingles, it doesn’t necessarily mean it isn’t working.

First, the reaction varies from person to person.

Some people experience mild tingles at around 10 mg per kg of body weight, most people experience moderate tingles at 20 mg/kg, and pretty much everyone will have severe (a bit strong of a word, really, but you get the idea) tingles at 40+ mg/kg.

This means that a smaller dosage of beta-alanine, like 400 to 500 milligrams, is unlikely to cause noticeable tingling.

A larger dosage, though, like 2 to 5 grams, absolutely should (unless you’ve specifically chosen a tablet form of beta-alanine that has a time-release coating).

So if you’re taking a supplement that purportedly contains a large amount of beta-alanine…but you’re not getting any tingles…shenanigans are probably afoot.

If you find yourself in that boat, switch to a new supplement because what you’re taking probably doesn’t have the amount of beta-alanine being claimed (if any at all).

There are no other known side effects of beta-alanine, but there is one thing that should be noted.

Beta-alanine is transported into cells by the same protein as the amino acid taurine. In a way, these two amino acids “compete” for uptake into cells.

Theoretically, then, too much beta-alanine in your body could inhibit the availability of taurine.

When we look at the research on the standard clinically effective dosages given above, though, it doesn’t seem to result in any meaningful loss of intracellular taurine.

What this does indicate, though, is that it’s probably not a good idea to take several large dosages of beta-alanine every day.

I’ve seen anecdotal accounts of Olympic weightlifters that did this and suffered from severe muscle cramping, which is a side effect of taurine depletion.

Stick with a daily beta-alanine intake of 2 to 5 grams you’ll be fine.

And if you do happen to notice any muscle cramping after starting beta-alanine supplementation, you can reduce the dosage or add taurine to your regimen.

For this purpose, 1 to 2 grams of taurine per day is sufficient.

The Best Beta-Alanine Supplements

best beta-alanine supplements

As you probably know, beta-alanine is mostly found in pre-workout supplements.

You now know why.

Remember, though…

1. If a supplement contains less than 2 grams of beta-alanine per serving (and calls for one serving per day), don’t buy it.

It’s underdosed. You want to see 2 to 5 grams and the closer to 5 grams, the better.

2. If a supplement claims to contain a clinically effective dosage of beta-alanine but it doesn’t give you any tingles, switch to something else.

It probably doesn’t have as much beta-alanine as the company is claiming or has a cheap, low quality beta-alanine.

(We get contacted by raw ingredient suppliers all the time that could dramatically increase our margins if we didn’t care about the quality of our products.)

By this point you’re probably not surprised to learn that my pre-workout supplement PULSE contains a clinically effective dosage of 4.8 grams of beta-alanine per serving.

It also contains clinically effective dosages of 5 other performance-enhancing ingredients:

And what you won’t find in PULSE is equally special:

  • No artificial sweeteners or flavors..
  • No artificial food dyes.
  • No unnecessary fillers, carbohydrate powders, or junk ingredients.

The bottom line is if you want to know what a pre-workout is supposed to feel like…if you want to experience the type of energy rush and performance boost that only clinically effective dosages of scientifically validated ingredients can deliver…then you want to try PULSE.



The Bottom Line on Beta-Alanine

beta-alanine bodybuilding

Beta-alanine is one of the few supplements that are affordable and proven to boost physical performance.

If your budget permits, it’s a worthwhile addition to your supplementation regimen.

Don’t buy into the hype, though–beta-alanine isn’t going to “take your workouts to another level” or “pack on slabs of lean muscle.”

It can help you push a bit harder in your training, however, and appears to help you add muscle faster as well.

And that, in time, can result in greater progress toward your goals.

If you’re going to supplement with beta-alanine, I recommend you combine it with other proven performance enhancers like creatine, citrulline, and betaine.

While you may not notice much of a difference in your workouts when taken individually, the cumulative effects of these supplements can be substantial.


What’s your take on beta-alanine? Have anything else to share? Let me know in the comments below!