How to choose a pre-workout: what actually works

There is no pre-workout that is best for everyone. What suits you depends on what you are hoping to get from it, the sport you do and how well you tolerate stimulants. The strongest evidence points to a small number of ingredients — caffeine and creatine among them — but the effects vary widely from person to person. Much of the rest of the label is marketing.

If you want the practical version: start by working out whether you need a supplement at all. For most active people, the answer is no. If you decide to go ahead, pick a product whose ingredients and doses you can actually confirm, avoid proprietary blends, and always check the total caffeine. We explain why below.

What is a pre-workout, actually?

A pre-workout is a supplement sold to be taken before exercise. It usually bundles several ingredients into one product: caffeine, creatine, beta-alanine, amino acids and things that promise nitric oxide, among others. A recent review describes exactly this mixture and flags a practical problem: many labels use proprietary blends that do not reveal how much of each ingredient is inside. Without those numbers, comparing two products becomes impossible.

None of this means every pre-workout is the same or useless. It means the label often does not give you enough information to know what you are taking. That is the first thing to get your head around.

Which ingredients have evidence and which are just promises

The International Olympic Committee's position is clear: of all the supplements sold to improve performance, only a few have good evidence of benefit. Among them are caffeine, creatine, some buffering agents and nitrate. The same source stresses that responses vary widely between individuals.

The British Nutrition Foundation goes further: for most active people, supplements are not necessary. The benefits of the few with good evidence apply to specific scenarios and are not guaranteed. There are risks too, including accidental doping and toxic levels of substances such as caffeine.

So what does that mean when you are choosing? That it makes sense to look at the ingredients with evidence and be sceptical about the rest. A product with twenty ingredients is not better than one with two — it is harder to assess.

Caffeine

Caffeine occurs naturally in coffee, cocoa, tea leaves, guarana berries and kola nut. EFSA gives approximate figures: 80 mg in an espresso (60 ml), 90 mg in a cup of filter coffee (200 ml) and 80 mg in a 250 ml can of energy drink. On safety, the same authority concludes that single doses up to 200 mg and intakes up to 400 mg per day from all sources do not raise concerns for healthy adults. Pregnant women have a lower limit: 200 mg per day. EFSA adds that 100 mg may affect sleep in some adults, especially close to bedtime.

That is useful for reading labels. If your pre-workout contains caffeine, add it to the coffee you drink through the day. You do not need to be precise to the milligram, but it helps to know where the ceiling is.

Creatine

Creatine monohydrate is one of the few supplements with consistent evidence. The International Society of Sports Nutrition states that creatine supplementation is safe and well tolerated in healthy individuals in both the short and long term. It increases intramuscular creatine concentrations, which may help to explain improvements in performance during high-intensity exercise. Note the "may help to explain" — it is not a promise of results.

If your goal is strength or power, creatine is probably the most interesting ingredient in a pre-workout. The International Society of Sports Nutrition indicates that creatine supplementation increases intramuscular creatine concentrations, which may help to explain improvements in performance during high-intensity exercise. There is a dedicated article on foods rich in creatine and another on creatine for women, if you want to go deeper.

Guarana and L-carnitine

Guarana is mainly a natural source of caffeine. EFSA names it as such. As far as we know, there is no specific evidence that sets it apart from caffeine in general. L-carnitine is sold in many pre-workouts, but we do not have data to support a claim of benefit for performance. If a label makes it the headline ingredient, treat that with scepticism.

What really differs between products — and what does not

Many pre-workouts share the same ingredients. The real differences lie in how transparent the label is, the caffeine dose and whether creatine is present in a useful amount.

• Purpose: caffeine and creatine are different ingredients, with evidence of benefit that varies widely between individuals and applies to specific scenarios. They are not the same thing.
• How it is taken: most powdered pre-workouts are mixed with water and drunk before training. Gummies are chewed. Convenience varies.
• What is known: according to the International Olympic Committee, only a few supplements — including caffeine and creatine — have good evidence of benefit, and responses vary greatly between people. There is no universal timetable.
• Cost: products with more ingredients tend to cost more, but that does not make them better.
• Practicality: a powder needs preparing; a gummy is immediate.

What does not differ: the evidence. An ingredient with good evidence does not become better because it sits in an expensive product with an impressive name. And an ingredient without evidence does not acquire any because it is nicely packaged.

Where the marketing outruns the science

Proprietary blends are the clearest example. The review we mentioned warns that without knowing the quantities, you cannot compare products. If a label says "energy complex" and does not state how much of each substance is in it, you do not know what you are taking.

Another point: the idea that a pre-workout "works better" because it has lots of ingredients is not supported by the evidence. The IOC's position is that only a few supplements have good evidence. The British Nutrition Foundation stresses that benefits vary and apply to specific scenarios. There are no guarantees.

You will also commonly see claims about ingredients that have no support. We are not going to repeat them here. If a product promises something that sounds too good to be true, it probably is.

Do people use both? Does that make sense?

Yes, you can combine caffeine and creatine, or choose a pre-workout that already includes both. There is no evidence that the combination is better than either on its own. They simply serve different purposes. If you do combine them, do not invent doses: follow the label directions or ask a professional. Never stack supplements without knowing the total caffeine you are taking in.

Who should avoid pre-workouts

Pregnant and breastfeeding women should be careful with caffeine: for pregnant women, EFSA considers that intakes up to 200 mg per day do not raise safety concerns; talk to your doctor before taking pre-workouts. Children and adolescents are not the target audience for these products. People with health conditions or those taking medication should speak to a professional before using any supplement. Caffeine may affect sleep in some adults, especially if taken close to bedtime.

If you compete in a federated sport, always check the list of prohibited substances. The British Nutrition Foundation warns about the risk of accidental doping.

What to check on the label before you buy

Before buying any pre-workout, ask yourself these questions:

1. Does the label state the amount of each active ingredient? If not, that is a bad sign.
2. What is the total caffeine per dose? Add up every source — coffee, tea, soft drinks, other gummies.
3. Does it contain creatine? At what dose?
4. Are there warnings for pregnant women, breastfeeding women or children? Read them.
5. Is the product from a brand that gives clear information? Transparency is the best indicator.

If you are considering gummies, our products have labels with the doses described. Energy Gummies with Guarana provide 200 mg of guarana extract, of which 44 mg is caffeine, per 2 gummies. Creatine Gummies provide 5000 mg of creatine monohydrate per 3 gummies. L-Carnitine Gummies provide 2500 mg of L-carnitine per 2 gummies. None of these products makes any claim to cure or treat anything. Always read the label and do not exceed the recommended dose.

The honest limit of the evidence

Research on pre-workouts is still emerging. We know that caffeine and creatine have good evidence, but we do not know which product is best for any given person. There are no studies ranking pre-workouts, and individual response varies. If you are looking for a guarantee, you will not find one here. What you can do is choose based on what is proven, read the labels and adjust to your own experience. If you are unsure, speak to a healthcare or sports nutrition professional.