10 Best BCAA Supplements UK 2023 | Optimum Nutrition, USN and More

If you're the sort of person who makes time to train every day, then having high amounts of amino acids in the form of a supplement is essential. For that reason, we've chosen Optimum Nutrition's Gold Standard BCAA as our number one pick.

It has a much higher amino acid content per serving than any of the others in our ranking, and you get about a month's worth (should you take one a day. More than simply focusing on performance, this supplement also includes multiple vitamins for overall wellbeing, such as vitamin C for immune health.

Did you know that approximately 35% of muscle protein is compromised of BCAAs? Therefore, if you're looking to train regularly, you'll need to have enough available in your body when it's time to work out. Luckily, Reflex Nutrition have your back with these capsules!

Each tablet contains three amino acids to help you maintain and gain muscle mass. You'll be required to take around six tablets each serving, so they might not go as far as some other options, but all the minerals are high-grade.  

BSN offer plenty of flavours to entice you into taking your BCAA supplement. We've chosen the blue raspberry flavour, but there are six other options, including green apple and fruit punch. Thankfully, it's more than just a taste sensation, providing you with quality amino acids.

Additionally, this supplement includes vitamin B6 to help increase stamina and metabolism. But we particularly like how well the formula mixes, which isn't something that can be said for every powder. 

If you've had a meander through the internet already, then you'll have likely come across Optimum Nutrition. They're one of the most recognisable sports supplement brands, and that's because they consistently deliver the goods.

This is their bulk option, providing 1000 tablets. As you only need to take two per serving, this gives you a whole lot of supplements! They can be taken either post or pre-workout and are used by all types of athletes, from runners to bodybuilders.  

This BCAA powder from PBN is similar to using a protein shake. Simply add a scoop to 250ml of water in your shaker, and shake vigorously for approximately 30 seconds. From there, you'll be drinking fine watermelon-flavoured BCAAs, which taste much better than Mr. Styles' watermelon sugar, we assure you. 

This blend of BCAAs is formulated to aid muscle growth and repair, weight loss and increase strength. As a nice little bonus, it's one of the more affordable options, with just as much of the good stuff inside. 

Here, we have another offering from Domyos. This BCAA supplement is slightly different in that it includes a wide variety of B vitamins, such as B6, B9 and B12. In the tub, you'll find 120 vegan-friendly tablets. However, you will be required to take five per dose. 

These tablets are also chewable, making them much easier and more enjoyable to take. They even come in lemon flavour, that's fresh without being too sweet or cloying.

USN has created the Power Punch Amino Acid Blend to help athletes and exercise enthusiasts meet their needs. It's packed full of leucine, isoleucine and valine, meaning you'll be able to maximise your training sessions. 

Not only that, but it's 100% vegan and has zero sugar. Plus, they have added vitamin b6, which helps to regulate and maintain a normal amount of amino acids in the blood. It isn't the cheapest option, but you'll surely get your money's worth!

Decathlon is one of the UK's most reliable sport and fitness stores, and Domyos is their flagship brand. With their BCAAs supplement, glutamine has been added, which is another amino thought to encourage weight loss.

Many have found that these tablets are much easier to take due to their chewable nature, meaning you won't have to try and swallow two big capsules just before your work out. Sadly, they're not as juiced up as some of the other options, but whether this is a determining factor will depend on how many BCAAs you require. 

This offering from Warrior supplements aims to help athletes in multiple aspects, from breaking down and synthesising proteins to ensuring that you remain focused on your workout and capable of giving it your all. If that's not good enough, they taste pretty good too! 

Here, we've opted for cherry cola flavour, but there are another five options should you be inclined towards something fruitier. One thing worth mentioning is that the ingredients include added caffeine, which could be dangerous if you work out in the evenings, take a pre-workout or are sensitive to caffeine. 

Weider is a Spanish company that produce a plethora of different supplements for athletes. This BCAA supplement use the traditional 2:1:1 ratio of amino acids, with 26 servings in each bottle. 

130 tablets may seem like a lot, but Weider recommend you take 5 tablets per serving. This means you'll only get 26 servings in a tub, which is a little short of average. Plus, the capsules are known to be on the larger side, so these might not be the most comfortable to take.