BCAA
Branched-chain amino acids, also known as BCAAs, are the building block of new muscle — making them an essential addition to your training. BCAAs can’t be produced by your body and must come from your diet, and that’s where we come in.
So, whether you’re looking to lose weight, tone-up, or build muscle, our BCAA supplements can help you achieve your goals. Explore our range below, with plenty of refreshing fruity flavours to choose from.
If you’re still not sure which choice is best for you, check out our best BCAA supplements.
Shop BCAA at Myprotein
BCAAs — branched-chain amino acids — are three essential amino acids: leucine, isoleucine, and valine. Unlike most amino acids, BCAAs are not produced by the body, which means they need to come from food or supplementation. They occur naturally in protein-rich foods and are among the most popular amino acid supplements used by people who train regularly.
The BCAA range covers everything from convenient tablets to mixable powders, giving you a straightforward way to get leucine, isoleucine, and valine into your daily routine. Whether you prefer to sip something during a session or take a tablet on the go, there's a format that fits.
Who BCAAs Are For
BCAAs are popular with anyone who trains with weights, runs regularly, or follows a structured fitness programme. They're particularly common among those who prioritise their amino acid intake alongside a high-protein diet — from gym-goers and endurance athletes to people who simply want a straightforward way to top up their leucine, isoleucine, and valine intake.
They're also a practical option for anyone training in a fasted state or at times when a full meal isn't convenient. Because BCAAs are a component of protein — and protein contributes to the growth and maintenance of muscle mass1 — they fit naturally into a supplement routine built around training goals.
When to Use BCAA
BCAA supplements are flexible enough to work around most training schedules. Many athletes take them before, during, or after exercise — the powder formats dissolve easily in water, making them a popular choice as an intra-workout drink. Tablet formats offer a no-mix option that works just as well pre-session or post-session.
Timing comes down to personal preference and how your wider nutrition is structured. Some people use BCAAs first thing in the morning when training fasted; others prefer them mid-session to keep their amino acid intake consistent throughout. Either way, they're easy to slot into an existing routine without overthinking it.
BCAA Benefits
Three Essential Amino Acids in One
BCAAs deliver leucine, isoleucine, and valine — three of the nine essential amino acids the body can't produce on its own. They're found naturally in dietary protein, making BCAA supplements a focused way to ensure these specific amino acids are part of your daily intake alongside whole food sources.
Part of a Protein-Focused Supplement Stack
BCAAs are essential amino acids that form part of protein, and protein contributes to the growth and maintenance of muscle mass1. That makes them a natural fit for anyone building a nutrition routine around training, particularly when total protein intake from food alone may fall short.
Flexible Formats for Any Routine
From powders you can mix into water and take to the gym, to compact tablet formats you can throw in a gym bag, BCAA supplements are built for convenience. Ratio options like 2:1:1 and 4:1:1 (referring to the leucine-to-isoleucine-to-valine split) give you the ability to choose a profile that matches your preferences. Some options also include added vitamin B6, which contributes to normal protein and glycogen metabolism2.
Vegan-Friendly Options Available
The range includes vegan BCAA powders, so plant-based athletes don't have to compromise on format or amino acid profile. These deliver the same leucine, isoleucine, and valine split as standard options, made without animal-derived ingredients.
Popular Picks
Essential BCAA Tablets — Essential BCAA Tablets deliver leucine, isoleucine, and valine in a 2:1:1 ratio alongside vitamin B6, which contributes to the reduction of tiredness and fatigue.
Impact BCAA 2:1:1 — Impact BCAA 2:1:1 gives you all three essential branched-chain amino acids in a 2:1:1 ratio, making it a straightforward fit for any sport or training goal.
BCAA 4:1:1 Tablets — BCAA 4:1:1 Tablets pack a higher leucine-forward 4:1:1 ratio with added vitamin B6 for those who want a more concentrated BCAA formula.
FAQs
What are BCAAs?
BCAAs (branched-chain amino acids) are three essential amino acids — leucine, isoleucine, and valine — that the body cannot produce on its own. They're found naturally in protein-rich foods and are also available as dedicated supplements in powder and tablet form. Because they're essential, they need to come from your diet or supplementation. BCAAs are among the most widely used amino acid supplements by people who train regularly.
What's the difference between BCAA 2:1:1 and BCAA 4:1:1?
The numbers refer to the ratio of leucine to isoleucine to valine in the formula. A 2:1:1 ratio means equal parts isoleucine and valine relative to leucine, while a 4:1:1 ratio has a higher proportion of leucine. Both formats deliver all three branched-chain amino acids — the difference is simply how much leucine features in each serving. The right choice comes down to personal preference and how your wider protein intake is structured.
Which BCAA supplement should I choose?
If you prefer tablets for simplicity, BCAA 4:1:1 Tablets are a practical pick — they provide a 4:1:1 leucine-to-isoleucine-to-valine ratio and include added vitamin B6, which contributes to normal protein and glycogen metabolism2. For a mixable option, Impact BCAA 2:1:1 delivers all three essential branched-chain amino acids in a classic 2:1:1 ratio that's easy to blend into a water bottle. Both are designed by Myprotein's expert nutritionists and suit most training styles.
What formats are BCAA supplements available in?
The range includes BCAA powders and BCAA tablets, so there's a format for most preferences. Powders are great for mixing into water to take during or around a session, while tablets are a no-fuss option for those who'd rather skip the mixing entirely. There are also vegan BCAA powder options available for plant-based athletes.
What is the BCAA ratio, and does it matter?
The BCAA ratio describes the split between leucine, isoleucine, and valine in a given formula — typically expressed as 2:1:1 or 4:1:1. A higher leucine ratio means more leucine per serving relative to the other two amino acids. Both ratios are used widely by people who train, and the choice often comes down to individual preference rather than one being definitively better than the other.
Can I take BCAA supplements if I follow a vegan diet?
Vegan BCAA supplements are available in the range, including Vegan BCAA 4:1:1 Powder and Vegan BCAA Powder. These deliver leucine, isoleucine, and valine without any animal-derived ingredients, making them a straightforward option for plant-based athletes who want to include branched-chain amino acids in their supplement routine.
Are BCAAs the same as protein?
BCAAs are not the same as protein, but they are a component of it. Leucine, isoleucine, and valine are three of the amino acids that make up protein — specifically, they're among the nine essential amino acids. Protein contributes to the growth and maintenance of muscle mass1, and BCAAs as essential amino acids form part of that picture. A BCAA supplement is a targeted way to get these three amino acids specifically, rather than the full spectrum you'd get from a protein supplement.
Who developed the BCAA supplements in this range?
The BCAA supplements in this range are developed by Myprotein's expert nutritionists. Each formula is designed to deliver a precise amino acid profile — whether that's a 2:1:1 or 4:1:1 leucine-to-isoleucine-to-valine ratio — in formats built around the practical needs of people who train. Some products also include added ingredients like vitamin B6 to complement the amino acid content.
What's the difference between BCAA powders and BCAA tablets?
BCAA powders are designed to be mixed with water, making them a popular intra-workout option you can sip throughout a session. BCAA tablets are pre-measured and require no mixing — just take them with water before or after training. Both formats deliver the same core amino acids; the choice comes down to convenience and how you prefer to take your supplements day to day.
Do any BCAA products contain added vitamins?
Yes — BCAA 4:1:1 Tablets include added vitamin B6 alongside the core leucine, isoleucine, and valine profile. Vitamin B6 contributes to normal protein and glycogen metabolism2, making it a complementary addition to a BCAA formula. If you're looking for a tablet-format BCAA with a bit more to it than just the three amino acids, that's worth considering.
1. Protein contributes to the growth and maintenance of muscle mass.
2. Vitamin B6 contributes to normal protein and glycogen metabolism.