4 Gauge Pre-Workout Review

4 Gauge pre-workout supplement

4 Gauge by Roar Ambition is a brand new, natural pre-workout supplement. This is the newest product of the innovative UK based company that specializes in premium supplements.

So what is so special about 4 Gauge pre-workout supplement?

The bottle of this product is in the shape of a shotgun shell. And it is not any shotgun shell either. 4 gauge ammunition is very powerful. Just as you will be when working out after a dose of 4 Gauge.

Beyond the cool packaging, this is an all-natural supplement suitable for both men and women who want to take their workouts to the next level. We’ve reviewed this product in great detail to help you decide if this is the pre-workout supplement for you.

4 Gauge Pre-workout


  • Fuel your workouts without added calories so you can train harder and stay leaner
  • Get the pump you need with a clean supplement – no artificial colourings, sweeteners or flavours
  • Achieve a smoother release of energy without the side effects of a big caffeine drop


  • No artificial sweeteners or flavours – only 5 calories per serving
  • Helps you to take your training to the next level in a safe way – all natural
  • Helps you to recover faster from your workouts
  • No proprietary blend – all ingredients and quantities clearly displayed on the box – no hidden side effects
  • Energy boost achieved through ingredients like L-Theanine – lower amounts of caffeine mean no crash
  • Suitable for vegans and vegetarians
  • Competitively priced product – $45 / £25 for a month’s supply – plus there is a deal if you buy 2 bottles
  • Shipped from both the US and UK – great delivery times both in Europe and the US


Dosage – How to take 4 Gauge pre-workout?

One bottle of 4 Gauge pre-workout contains 280g of powder. A serving is 2 scoops, which is 14g. So you get 20 servings.

Following the recommended serving size, a bottle should last you more than a month if you go to the gym 3 or 4 times a week. If you go more regularly, a bottle will last you just about a month.

Mix 2 scoops of 4 Gauge pre-workout with about 300 – 350 of water or juice as per the recommendation and drink it about 20 –  30 minutes before training.


This is not your low-cost product, but it is reasonably priced for its content. There are also deals available on the company’s website.

1 bottle$45 / £25
2 bottles – $90 / £50 – includes free shipping in the USA and the UK
3 bottles – $135 / £75 – plus 1 extra bottle free and free UK and US shipping4 Gauge Pre-workout

Where can I buy it?

4 Gauge pre-workout is only available direct from the company’s website. It is not available from Amazon or Ebay. The company ships from both the UK and the USA so if you order from Europe or the US, you can expect a speedy delivery.


Beyond the cool shotgun shell packaging, 4 Gauge also has an impressive list of ingredients. In this review, we’ve looked at each of the ingredients of this pre-workout supplement and what they all do.

4 Gauge Pre-workout

Main Ingredients

The main ingredients in 4 Gauge are L-Citrulline Dl-Malate (6000mg per 2 scoops) and Creatine Monohydrate (1000mg per 2 scoops).

Creatine Monohydrate is a widely used ingredient in supplements that aim to help you build lean muscle mass and increase strength and performance. This protein-like compound is available from food such as meat and fish.There is plenty of

There is plenty of research evidence out there that shows that Creatine Monohydrate helps to improve the body’s anaerobic capacity which in turn leads to increased performance.

The other main ingredient in the product, L-Citrulline Dl-Malate on the other hand, has been shown to reduce fatigue and improve endurance during exercise. Both of these main ingredients help the body perform at its best during workouts, but through different means.

Despite the potentially positive effects of Citrulline Malate on workout performance, taking large doses of this compound may present side effects for people with kidney disease. So if you are taking any medication or have a medical condition, it is best to consult with your doctor before taking high doses of Citrulline Malate.

Additional Ingredients

It also contains Acetyl L-Carnitine (500mg per 2 scoops) and L-Theanine (200mg per 2 scoops). Acetyl L-Carnitine is also used in fat burner supplements. Some research shows that this amino acid helps utilise the fat stores in our body as energy. This helps you to build more lean muscle mass.

L-Theanine is an amino acid found in tea. Countless studies have proven the effectiveness of green tea specifically as a weight loss ingredient. However, studies have also shown that when L-Theanine is combined with Caffeine, it resulted in improved cognitive functions. So L-Theanine is not only a natural and safe stimulant but also a natural brain booster when combined with caffeine.

Finally, Caffeine (150mg per 2 scoops) is a natural and highly proven thermogenic ingredient that increases the body’s metabolic rate. It is widely used in fat burner supplements due to its ability to help the body to burn more fat safely.

Not only a great natural fat burner, but caffeine also gives the body an energy boost you need before workouts so you can train harder in the gym.

The amount of caffeine in this supplement is relatively low, therefore you get a smoother release of energy without the jitters. The low caffeine content is also great if you are taking fat burner supplements at the same time.

No Artificial Sweeteners or Preservatives

Many other pre-workout supplements use artificial sweeteners to enhance the taste of their product. 4 Gauge has none of that nonsense. It uses natural sweeteners like coconut water, red beetroot extract and Xylitol to make the product taste better. Doing this means it only contains 5 calories per serving. Keeping your added calorie intake to the minimum is crucial when you are trying to stay lean.

Potential side effects of 4 Gauge pre-workout

This is an all natural product with all the ingredients and amounts clearly stated on the label so you won’t get hidden side effects.

There is only a very low dose of caffeine in 4 Gauge, but if you are sensitive or allergic to caffeine this product may not be for you.

Our Verdict on 4 Gauge pre-workout

4 Gauge pre-workout is a great supplement and after reviewing its different aspects, we gave it a near perfect rating of 4.5 out of 5 stars.

The ingredients and amounts are clearly visible on the bottle. So you can be sure that there are no hidden side effects.

This is a fantastic product that contains no colourings, artificial sweeteners or flavours. Each serving contains only 5 calories. This way you can make sure that you don’t consume any hidden calories when you are trying to stay lean.

Although 4 Gauge pre-workout contains caffeine, the amount per serving is relatively low. This way you get the energy boost you need to train harder, but without the dreaded caffeine crash. No jitters or shakes, just a smooth release of energy.

The ingredients and their amounts are carefully put together to achieve maximum result. The main ingredients, L-Citrulline Dl-Malate and Creatine Monohydrate have both been shown by a number of research studies to reduce fatigue, improve endurance and increase performance effectively and in a safe way.

Other ingredients like caffeine increase the metabolic rate and provide energy for the workouts, whilst Acetyl L-Carnitine help mobilise fat stores to use as energy when you train. The combination of these effective and safe ingredients means you can take your workout to the next level achieving greater results.

This pre-workout supplement is suitable for vegetarians and vegans as well.

The company ships 4 Gauge pre-workout from both the US and the UK. So, ordering either from Europe or from the US means a speedy delivery.

This is one of the best pre-workout supplements out there at the moment. We would highly recommend buying this product if you are looking for a natural, safe and effective pre-workout supplement to take your training to the next level.

Check out their website at www.4gauge.com