Pre-Workout for Beginners

What should a beginner look for in a pre-workout?

Start with the caffeine per full-strength serving. Supplements with added caffeine must state it, under the warning "Contains caffeine. Not recommended for children or pregnant women", so it's the easiest figure to compare.

Then check that every ingredient amount is listed, and work out the cost per full-strength serving. If you'd rather avoid caffeine altogether, see our stim-free pre-workouts. "Two pre-workouts can look very similar on the shelf but have completely different formulations, caffeine levels and costs per serving," says Andy Arshad, who runs SupplementHQ.

How much caffeine is too much?

EFSA (the European Food Safety Authority) says single doses up to 200mg, and up to 400mg a day spread through the day, do not raise safety concerns for healthy adults, apart from pregnant women. The NHS puts a cup of instant coffee at about 100mg, so count your coffee and tea too.

The UK government warns that dry scooping (swallowing the powder without mixing it with water) may exceed the recommended daily dose, and that increasing the serving based on how you feel may lead to unsafe amounts. Follow the label directions, and speak to your GP or pharmacist first if you have a medical condition or take medication. Pre-workout isn't for under-18s or pregnant women.

Can you try pre-workout before buying a tub?

Yes: our pre-workout samples let you try a single serving before buying a full tub. Compare more options in our pre-workout guide.

We sell the products on this page. That's our commercial interest, and it's why we show the evidence alongside them. This page is general information for adults, not personalised medical advice. Food supplements should not replace a varied, balanced diet.

Written by Andy Arshad, SupplementHQ. Last reviewed 11 October 2026.