Can You Increase IQ with Supplements?
The Myth: Nootropic supplements and 'brain pills' can significantly increase your IQ.
The Reality: Most nootropic supplements have little to no evidence for increasing IQ. Some nutrients (omega-3s, vitamin D) may help if you're deficient, but no supplement dramatically boosts intelligence in healthy individuals.
What the Science Says
The nootropics industry generates billions of dollars selling the promise of enhanced intelligence, but the evidence is largely disappointing. Most popular 'brain supplements' — ginkgo biloba, bacopa monnieri, lion's mane mushroom, various racetams — show mixed results at best in clinical trials, with effect sizes too small to meaningfully impact IQ scores. What does have evidence: correcting nutritional deficiencies. If you're deficient in omega-3 fatty acids, iron, iodine, zinc, vitamin D, or B vitamins, supplementation can restore cognitive function to your baseline — but this is fixing a deficiency, not enhancing beyond normal. Caffeine genuinely improves alertness and working memory temporarily (see our page on coffee and IQ). Creatine may modestly improve short-term memory and reasoning in vegetarians. But nothing legally available produces the dramatic cognitive enhancement that supplement marketing implies. The best 'nootropics' remain free: exercise, sleep, and challenging mental activity.
Learn more about what IQ actually measures and what different scores mean.
Frequently Asked Questions
Can supplements increase IQ?
No supplement has been shown to significantly increase IQ in healthy, well-nourished individuals. Correcting nutrient deficiencies (omega-3s, vitamin D, iron) can restore baseline cognitive function, but that's different from enhancement. The best 'brain boosters' are exercise, sleep, and learning.
Do nootropics actually work?
Most have little evidence. Caffeine genuinely improves alertness temporarily. Creatine may modestly help some people. But popular supplements like ginkgo biloba, lion's mane, and racetams show mixed results in clinical trials with effect sizes too small to impact IQ meaningfully.
What's the best way to boost brain function?
Exercise (strongest evidence), adequate sleep (7-9 hours), proper nutrition, continuous learning, and social engagement. These free activities have far more evidence than any supplement. Fix deficiencies first, then focus on lifestyle.
More IQ Myths Debunked
Take our free IQ test to see where you stand, or explore science-backed ways to improve your IQ.