What Are the Best Supplements for Focus?

Maybe you've got a big week at work, exams coming up, or an afternoon slump that hits at 3 pm every day. Maybe you train before or after work and want your head in the game for both. Or you've seen "nootropic" on a label and wondered what's actually in it. Whether you lift, run, study or simply want to get through your inbox with a clear head, this guide is for you. No silly questions.

We'll start with the habits that do the heavy lifting, then walk through the ingredients with real human research behind them, what the studies found, and which products we stock that contain them.

Start with the foundations

No supplement can make up for a short night. Get these four right and anything you add has a much better chance of supporting you.

Sleep

Sleep loss hits focus first. A review of 70 studies found that short-term sleep deprivation had its biggest effect on simple attention, the kind you need to stay on task, with large increases in lapses. [17] The New Zealand guideline for adults aged 18 to 64 is 7 to 9 hours in 24 hours, and about two in three Kiwi adults (67.4%) meet the sleep guideline for their age. [18] If you're in the other third, sleep is your best focus tool. Our sleep guide has practical steps.

Caffeine timing

Caffeine works, but it can cost you sleep if you time it badly. In a study of 400 mg of caffeine taken at bedtime, 3 hours before bed or 6 hours before bed, all three disrupted sleep compared with placebo, and the researchers backed the advice to avoid substantial caffeine for at least 6 hours before bed. [3] Even 100 mg close to bedtime may affect sleep in some adults. [2] A simple rule: keep coffee, pre-workout and focus drinks to the first half of your day.

Hydration

Being even a little dehydrated affects how well you think. Across 33 studies, dehydration impaired attention, decision-making and coordination, with bigger effects once people had lost more than 2% of their body weight in fluid. [19] For a 70 kg person, that's about 1.4 litres. Keep a bottle on your desk, and if you sweat a lot in training, see electrolytes for training.

Meals

Skipping breakfast doesn't do your brain any favours. A review of 38 studies found healthy adults had a small but consistent memory advantage after eating breakfast. [20] Regular meals with some protein help you avoid the mid-morning crash. Our protein guide shows how to build them.

Caffeine: the one you already use

Caffeine is the most researched focus ingredient there is. The International Society of Sports Nutrition says caffeine supports cognitive function, including attention and vigilance, in most people, and may support thinking and physical performance when you're short on sleep. [1]

How much is sensible?

• For healthy adults, single doses up to 200 mg (about 3 mg per kg of body weight) and up to 400 mg across the day don't raise safety concerns, according to the European Food Safety Authority. [2]

• If you're pregnant, the guidance is up to 200 mg a day, spread across the day. [2]

• Before training, the most common timing in research is about 60 minutes beforehand, and doses of 3 to 6 mg per kg support exercise performance. [1]

Remember to count every source: coffee, tea, energy drinks, pre-workout and focus supplements all add up. Our guide to caffeine in pre-workout goes deeper.

Caffeine plus L-theanine

L-theanine is an amino acid found in tea. Paired with caffeine, it's one of the most studied focus combinations.

• In 27 healthy adults, 50 mg of caffeine with 100 mg of L-theanine supported faster and more accurate switching between tasks at 60 minutes, and less distraction during a memory task, compared with placebo. [4]

• A review of 11 placebo-controlled studies found moderate effects in favour of the pair for alertness and attention switching in the first 2 hours. [5]

• In 37 adults kept awake overnight, 200 mg of L-theanine with 160 mg of caffeine supported better accuracy on an attention task, and reaction times improved by 38 milliseconds more than with placebo. [6]

That's why many people pair a coffee with an L-theanine supplement. It's a simple, well-tested way to support calm, steady focus.

What else has research behind it?

Beyond caffeine, creatine and bacopa have the best research behind them for focus and memory; alpha-GPC and lion's mane research is still early. Creatine is a daily habit that works for people who train and people who don't (go deeper in creatine and your brain), and bacopa is a slow builder: think of it as a term-long or project-long habit, not something you take the morning of a deadline.

Match an ingredient to your day

Focus ingredient cards

• L-theanine with caffeine best-researched

  How it was used100 to 200 mg L-theanine with 50 to 160 mg caffeine.

  Studied forAlertness and attention switching within 2 hours [4] [5].

  Where you'll find itSanderson Cognition FX (200 mg L-theanine) plus your coffee.

• Creatine best-researched

  How it was used3 to 5 g a day keeps stores topped up once full [10].

  Studied forPlays a key role in how your brain uses energy [8]. A review of 6 trials with 281 people found it may support short-term memory and reasoning, with vegetarians responding better than meat-eaters on memory tasks [7]. A 2023 analysis of 8 trials found it supported memory overall, clearest in older adults aged 66 to 76, with little change in younger adults [8]. During 21 hours without sleep, a single large research dose (0.35 g per kg, not a daily dose) supported better thinking and processing speed than placebo [9].

  Where you'll find itInception Labs Creatine Monohydrate

• Bacopa best-researched

  How it was usedHerb from Ayurvedic tradition. Around 300 mg standardised extract daily for 12 weeks.

  Studied forA review of 9 trials with 518 people, all on standardised extracts for at least 12 weeks, found faster attention (quicker task switching, faster choice reaction times) [13]. One 12-week trial of 300 mg a day found faster visual processing, better learning rate and better memory consolidation than placebo, with the biggest effects at 12 weeks [14].

  Where you'll find itSanderson Cognition FX (150 mg per capsule, about half the daily amount used in the trials).

• Alpha-GPC early research

  How it was usedA source of choline, used to make acetylcholine, a messenger involved in attention. A single 315 or 630 mg dose.

  Studied forIn 20 resistance-trained men it supported better scores on a colour-word attention test an hour later; two other tests didn't change. Promising, early research [11].

  Where you'll find itInception Labs Valor and Inception Labs 1510, as one ingredient of several, alongside caffeine.

• L-tyrosine

  How it was usedUsed to make dopamine and noradrenaline. Single doses before a demanding task.

  Studied forSupports thinking mainly in short, stressful or mentally demanding situations, rather than on an ordinary day [12].

  Where you'll find itValor and 1510, as one ingredient of several.

• Lion's mane early research

  How it was usedEdible mushroom. 3 g a day for 16 weeks.

  Studied forIn 30 adults aged 50 to 80 with mild memory decline it supported higher scores on a cognitive test than placebo [15]. A single 3 g dose in 18 healthy young adults didn't change overall thinking or mood, though one task improved [16]. Early research, one to watch.

  Where you'll find itNot currently in stock.

What about the other ingredients on the label?

Many focus formulas list a long run of ingredients. Look for the ones above, check the amount per serve, and check whether caffeine is in there. If the label doesn't give you the caffeine number, ask us before you stack it with coffee or pre-workout.

Who focus supplements suit

You're working or studying

Long screen days, exams and deadlines are where the foundations matter most. A morning coffee paired with L-theanine supports calm, steady focus without needing more caffeine. Bacopa suits a longer stretch like a study term, and creatine is an easy daily habit that supports memory.

You train

Caffeine already supports your training, and creatine supports strength and power in the gym as well as the brain research above. [1] [10] If you take a pre-workout, count its caffeine before adding a stimulant focus drink on the same day. See stimulant vs stimulant-free pre-workout.

You don't train

You don't need a gym membership for any of this. Sleep, water, regular meals, sensible caffeine and a daily caffeine-free option like creatine, or Cognition FX, all fit a desk job or study schedule.

You're plant-based or older

Vegetarians tend to have less creatine stored in muscle [8], and they responded better to creatine on memory tasks. [7] Older adults showed the clearest memory benefit in the 2023 analysis. [8] Inception Labs Creatine Monohydrate is vegan.

Check first

Keep these in one place:

• Medication. Sanderson Cognition FX should not be used with antipsychotic or antidepressant medicines, and if you take warfarin, talk to your doctor before using it. If you take any regular medication, check with your doctor or pharmacist before starting a focus supplement.
• Pregnancy and breastfeeding. Keep caffeine to 200 mg a day or less in pregnancy [2], and check with your midwife or GP before taking any focus supplement.
• Caffeine sensitivity. If caffeine makes you anxious, jittery or wrecks your sleep, choose creatine or Cognition FX (no caffeine on its ingredient list), and skip stimulant drinks.
• Under 18. Stimulant focus products aren't for under-18s.

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