Supplements for Gaming Focus: What Works, What’s Hype and What’s Safe (UK)

Do gamer supplements work?

Only a little, and mostly because of the caffeine in them. A 2026 review of 13 randomised trials in esports players found that 14 of the 18 supplements tested contained caffeine. Some improved attention, mood and shooting accuracy, but the trials were small, mostly in amateurs, and over half had a risk of bias.

The authors called their findings preliminary: see the 2026 esports supplement review. Most “gamer” tubs share the same core: caffeine, a few B vitamins, sometimes L-theanine or taurine, plus sweeteners. The vitamins only help if you’re short of them, and the caffeine is the same as in a mug of coffee. For focus outside gaming, see the best supplements for focus and nootropics in the UK.

Supplements for gaming focus: the evidence

What human trials show for each ingredient sold to gamers, and whether it has any claim on the GB nutrition and health claims register.

The creatine row rests on a 2026 review of just five sleep-deprivation studies; the lion’s mane row on a 41-person Northumbria University pilot. There are no published trials of CBD on gaming, and we don’t suggest it for that (see CBD and focus). More in our guides to creatine, lion’s mane, omega-3 and vitamin B12.

Is caffeine good for gaming?

For most healthy adults, a moderate dose can help a little. In small trials of esports players, about 3mg of caffeine per kg of body weight, taken 45 to 60 minutes before play, made reactions slightly faster and aim slightly more accurate than a placebo. The trade-off is sleep, especially if you drink it in the evening.

In a 2020 Spanish study of 15 professional players, reaction time fell from 0.20 to 0.19 seconds and target hits rose from 98.8% to 99.8%. A 2024 trial in nine elite players found a better kill ratio and hit accuracy. Real effects, but small, in a handful of players.

For a 70kg adult, 3mg per kg is about 200mg: the most the European Food Safety Authority (EFSA) considers safe in one dose, within 400mg a day. EFSA also found 100mg close to bedtime may affect sleep, and caffeine takes hours to clear (how long caffeine lasts). Too much brings jitters (caffeine and anxiety) and a later slump (coffee crash).

Caffeine plus L-theanine

L-theanine is an amino acid from tea. A 2025 University of Aberdeen review of 50 trials found caffeine with L-theanine gave small to moderate gains in reaction time and attention for two hours versus placebo, though results were uncertain in places and two authors worked for a tea company. See L-theanine benefits.

Are gaming energy drinks safe?

For healthy adults, an occasional energy drink is fine as long as your total caffeine stays under 400mg a day. The risks come from stacking cans and powders through a long session, drinking them late, and the sugar in regular versions. They aren’t recommended for children, teenagers, or during pregnancy or breastfeeding.

Coffee, tea, cola and 250ml figures are the NHS’s. Gaming powders vary by brand, so check the caffeine per serving on the tub. UK drinks with over 150mg of caffeine per litre must say “High caffeine content”, and England plans to ban their sale to under-16s from April 2027, subject to Parliament. Plenty of gamers are teenagers, even though GTA is rated 18: EFSA’s safe level for them is 3mg per kg a day, about 150mg for a 50kg 15-year-old, less than one 500ml can. More in energy drinks.

Staying sharp through a long session (GTA 6 launch week)

GTA 6 is due out on Thursday 19 November 2026 on PS5 and Xbox Series X|S, and Rockstar’s site says pre-loading starts on 10 November. For the exact unlock time, check Rockstar’s site. These basics do more for a long session than any supplement.

• Bank sleep beforehand. A 2024 review of 26 studies found casual gaming wasn’t linked to poor sleep, but long, late, arousing sessions were. Going in short builds sleep debt.
• Take short, frequent breaks. The Health and Safety Executive says 5 to 10 minutes every hour beats 20 minutes every two hours. Stand up and move.
• Rest your eyes. Try the 20-20-20 rule: every 20 minutes, look about 20 feet away for 20 seconds. See heavy, tired eyes and blue light glasses.
• Drink water. Keep a bottle within reach (how much water a day).
• Eat a proper meal. Protein, fibre and slow carbs beat crisps and sweets (brain foods).
• Set a caffeine cut-off. The NHS advises no tea or coffee for 6 hours before bed: for a midnight finish, stop by 6pm.
• Pick a stop time, or plan a lie-in. After a late one, a 20-minute power nap beats another energy drink, and your normal bedtime the next night resets your body clock.

Related: how to sleep after gaming, late-night sport and sleep and revenge bedtime procrastination (why “one more mission” is so easy).

Where Evopure fits

None of our products is a gaming supplement, and we don’t claim any of them improves focus, reaction time, energy or gaming. For adults who want something for the routine around long sessions: the caffeine-free Magnesium Glycinate Sleep Complex for the evening, Reishi Cacao instead of a late energy drink, and Flow CBD Oil (broad spectrum CBD with 35mg ashwagandha root extract and 35mg maca root extract per half pipette) for adults who already use CBD in the daytime.

Flow is adults only, not for under 18s. The FSA advises healthy adults to take no more than 10mg of CBD a day: about 0.2ml of the 500mg (0.1ml of the 1,000mg) gives 10mg. Flow contains ashwagandha: don’t take it with a thyroid or liver condition (ashwagandha side effects). Our CBD oils are broad spectrum, 0% THC, with batch reports at lab testing.

The FSA’s 10mg a day figure is precautionary advice rather than a legal limit, set while longer-term safety research continues. At Evopure we think it is a very cautious figure, and many adults use more. If you go above it, increase slowly, and check with your GP or pharmacist first if you take any medication.

iIf you take any regular medicines, check with your GP or pharmacist first. We don’t recommend our products during pregnancy or breastfeeding.