Do brain booster supplements work?

Find out the difference between natural and synthetic nootropics (cognitive enhancers), how they work, and their potential benefits and risks.

What are brain boosters and nootropics?

Whether you want to improve your concentration at work, stay alert during long study sessions or support your memory as you age, you may be looking for ways to optimise your brain performance. This growing interest has fuelled the popularity of nootropics; substances often marketed as “brain boosters” or cognitive enhancers.

Experts generally agree that prescription nootropics can be helpful for people living with impaired cognitive function, such as Alzheimer’s or ADHD, but a growing number of healthy people are using them to boost focus and mental performance.

“Some nootropics occur naturally in foods and plants, while others are prescription medicines developed to treat neurological conditions,” explains Dr India Butler, a physician at Wits Donald Gordon Medical Centre who specialises in geriatric medicine. “Although certain nootropics may offer benefits in specific situations, they’re not a substitute for healthy lifestyle habits and should be used with care.”

What are nootropics?

Nootropics are substances that may improve one or more aspects of cognitive function, including memory, concentration, attention, learning, and mental alertness. They generally fall into two categories:

1. Natural nootropics, derived from plants, foods, or naturally occurring compounds.
2. Synthetic nootropics, which are prescription medications or laboratory-developed compounds designed to affect brain function.

1. Natural nootropics

Natural nootropics are widely available as foods, beverages, or dietary supplements. Although their effects are often more subtle than prescription medications, some have been studied for their potential role in supporting cognitive function.

Caffeine

Found in coffee, tea and cocoa, caffeine is the most widely consumed natural cognitive enhancer. It works by stimulating your central nervous system, helping improve alertness, reaction time, and concentration. However, excessive caffeine intake may cause anxiety, sleep disturbances, heart palpitations, and dependence.

L-theanine

Naturally present in green tea, L-theanine promotes relaxation without causing drowsiness. When combined with caffeine, it may improve focus while reducing the jittery side effects that some people experience from caffeine alone.

Bacopa monnieri

This herb has been used for centuries in traditional Ayurvedic medicine – an ancient Indian holistic system using natural substances. Some research suggests it may improve memory and learning after several weeks of regular use, although more high-quality studies are needed.

Ginkgo biloba

Ginkgo biloba has long been promoted as a memory aid, particularly for older adults. Some studies have noted modest improvements in cognitive function, but evidence remains mixed, and it has not been proven to prevent or treat dementia.

Omega-3 fatty acids

Omega-3 fatty acids, found in oily fish, walnuts and flaxseeds, are essential for normal brain function. Maintaining adequate omega-3 intake supports overall brain health and may contribute to healthy cognitive ageing.

2. Synthetic nootropics

Synthetic nootropics include prescription medications developed to treat specific neurological or sleep disorders. These medicines should only be used under the guidance of a healthcare professional.

ADHD medications

Prescription stimulants such as methylphenidate and amphetamine-based medications are used to treat attention deficit hyperactivity disorder (ADHD). In people diagnosed with ADHD, they can significantly improve attention and reduce impulsivity.

However, using these medicines without a prescription carries risks, including elevated blood pressure, anxiety, insomnia, and dependence.

Modafinil

Modafinil is prescribed for conditions such as narcolepsy and some shift-work sleep disorders. It promotes wakefulness and sustained attention, but its use as a cognitive enhancer in healthy individuals remains controversial.

Racetams

Compounds such as piracetam have been investigated for their potential effects on memory and learning. Although they’re available over the counter, evidence supporting their effectiveness in healthy adults remains limited.

Are nootropics safe?

“Many people assume that products labelled ‘natural’ are automatically safe, but this isn’t always the case,” says Dr Butler. Herbal supplements may interact with prescription medications, increase bleeding risk, or cause unwanted side effects.

Similarly, prescription nootropics can hold significant health risks if taken without medical supervision.

Another important consideration is supplement quality. Unlike prescription medicines, dietary supplements may not undergo the same rigorous testing for safety, quality, and consistency.

It’s important to know that not every product marketed as a nootropic has strong scientific evidence to support its claims, and results can vary between individuals

Supporting brain health naturally

While some nootropics may play a role in supporting cognitive function, the strongest evidence for maintaining long-term brain health still lies in everyday lifestyle choices:

• Get 7-9 hours of quality sleep each night
• Eat a balanced diet rich in vegetables, fruit, whole grains, and healthy fats
• Exercise regularly
• Find ways to manage your stress
• Stay socially connected
• Keep your brain active through lifelong learning and mentally stimulating activities
• Manage chronic conditions such as high blood pressure, diabetes, and high cholesterol.

These habits support cognitive performance and may also reduce the risk of cognitive decline later in life.

Nootropics aren’t miracle solutions

“Nootropics continue to attract attention as potential tools for enhancing mental performance, but they’re not miracle solutions,” says Dr Butler. “Some natural and synthetic nootropics have demonstrated benefits in specific circumstances, but many require further research – and none can replace healthy lifestyle habits.”

If you're concerned about memory, concentration, or other aspects of cognitive health, speak to your doctor before starting any supplement or medication. An individual assessment can help identify the safest and most effective approach for your needs.