The best caffeine pills for a powerful pre-workout boost

For those looking for the strongest hit of caffeine at the best price, Urban Fuel has practically decimated the competition.

Containing 100 tablets, each at 200mg, you can stay well and truly caffeinated for over three months. Perfect for vegetarians, vegans and those who love high-intensity workouts: for the value, and the sheer effectiveness - this is exactly what you need.

Of course, 200mg is no meagre dose of caffeine - it's just over two coffee drinks worth - and for those not accustomed to such a high dose, caution is advised - such an amount may cause anxiety and jitteriness.

Perfect for those looking for naturally sourced caffeine supplements to boost their gym game - Weightworld's pure guarana caffeine capsules are perfect for a vitamin-filled, healthy boost to your energy without the typical side effects of inorganic caffeine.

Packed with vitamin C, vitamin B, antioxidants and minerals - Weightworld's pure guarana is a wonderful, jitter-free alternative to standard caffeine pills that don't cost an arm and a leg.

Solid, reliable, simple - while Oxford Vitality's 200mg caffeine tablets aren't made from organic ingredients, they're certainly potent.

At 200mg per tablet, simply swallow a single tablet and feel the sudden rush of energy throughout the day - or even take one prior to a workout and get your pump on. And with over 500 servings, it's great value.

Just be wary when taking huge doses of caffeine - know your limits, as being overly caffeinated just isn't going to do much for your gym goals.

Bulk's pure caffeine tablets are an excellent way of energising yourself before an exceptionally tough workout - take a single 200mg pill and feel an immediate rush of potent enthusiasm.

And with over 100 tablets, you'll have plenty of caffeine for many workouts - all for less than £10. What's more, Bulk is a trusted brand that makes hundreds of various high-quality supplements for intense exercise, so there's really no concern about quality.

As for the number of caffeine tablets inside - there's a supply of about three months worth, which is plenty, but some competitors certainly offer a good deal more at not so different a price.

If you're not a massive coffee drinker or find yourself being a little more sensitive to caffeine than most - Healthspan's 50mg caffeine tablets are a fantastic alternative to avoid the gym jitters.

With 120 tablets included, get a ferocious workout for months on end without ever running out or getting needless caffeine anxiety.

Of course, if you're fairly immune to the effects of caffeine, you're definitely going to want a higher dose.

Pick yourself up from the low-energy blues whether you're at the gym, midway up a mountainside, or fighting the urge to catch some air during a marathon - HIGH5's energy gel is a high-octane instant energising method of getting yourself back in the game, without digesting potentially harmful chemicals.

Made of natural fruit juice, completely vegan and delicious - supply your body not only with a nice hit of caffeine but also a good amount of carbs to keep you burning.

HIGH5's energy gel, unfortunately, doesn't have an enormous concentration of caffeine, and there aren't a ton of gels inside the box to justify repeated purchasing of HIGH5's energy gel - but if you're prepping for a huge hike or long distance run, they're absolutely perfect.

For faster energy in a delicious chew, Caffeine Bullet mint chews are perfect for that quick flash of motivation before a heavy pump.

Caffeine Bullet chews have a good amount of caffeine without becoming overpowering - giving you just enough of a burst of power to crush your PBs and conquer the post-work yawns.

If you're not particularly sensitive to caffeine, you may need to double your dose - or maybe stick to tablets, they're not the most caffeinated, but for most people, it's definitely enough.

Ultra-strong caffeine doses and plenty of tablets for day-to-day exercise (or even for getting you through a busy day in the office), Peak Supps caffeine tablets are great for driving you towards fitness goals with ease and getting the best pump possible.

Just take some caution if you're not used to a strong hit of caffeine - it can trigger anxiety and jitteriness, neither of which are great for a workout.

Smug's fast-releasing caffeine pills are great for an instant motivational high-octane boost, whether working out or otherwise.

Manage your energy and morale throughout a tough workout session - keep your eyes on the prize and crush your PBs with ease, it's all possible with enough caffeine.

For a short-term supply of caffeine at a ridiculously low price, PRO PLUS caffeine tablets are a great way to quickly power up for the gym and hit the road.

Simple, powerful, and so cheap, they're worth grabbing for the sake of it - there's little surprise as to why they're an absolute best seller.

A single tablet contains 50mg, which isn't a ton - but it's plenty for a much-needed motivational boost. For those that need a little more fuel, we'd suggest going for something a little stronger.