Focus & Cognition

950 mg EPA+DHA in a single IFOS-certified softgel from wild Alaska pollock, at roughly a third of a dollar per day; the value benchmark for fish oil.

One lemon-flavored teaspoon delivers 1,300 mg EPA+DHA from Norwegian-processed fish oil, IFOS certified; the high-dose pick for people who hate capsules.

1,100 mg EPA+DHA per two lemon-flavored softgels in triglyceride form, with lot-level purity testing; excellent tolerability, but pricier than IFOS-certified rivals.

Fully dosed and naturally sweetened: 8 g citrulline malate, 3.6 g beta-alanine and a hefty 350 mg of caffeine balanced by 350 mg of L-theanine.

One of the most heavily dosed pre-workouts: per scoop 5 g citrulline, 2.5 g creatine and 200 mg caffeine, doubling to 400 mg caffeine at the 2-scoop max.

A fully disclosed, clinically dosed pre-workout (300 mg caffeine, 6 g citrulline, 3.2 g beta-alanine) wrapped in GHOST's popular licensed candy flavors.

A simple, well-dosed 200 mg Suntheanine softgel for calm focus and wind-down, at about $0.33 a day. Contains gelatin and coconut.

A plant-based omega-3 from microalgae with 195 mg EPA and 390 mg DHA per two softgels; a clean fish-free option, but you pay more per gram than for fish oil.

A TikTok Shop best-seller with solid citrulline and beta-alanine doses and licensed candy flavors, but caffeine ranges from 300 to 390 mg by flavor.

Portable, sugar-free caffeine gum with a fully disclosed, research-backed pairing: 40 mg of caffeine plus 60 mg of L-theanine in every piece.

A best-selling Magtein supplement at the full 2 g trial dose. Sleep evidence is early and industry-funded, and at about $1 a day it costs far more than other magnesium.

Real organic dark-roast coffee (about 150 mg caffeine per cup) with 250 mg each of lion's mane and chaga; tastes like coffee, but mushroom doses are modest.

A creamy, low-caffeine (45 mg) instant coffee with collagen and L-theanine; its chaga and lion's mane sit inside a 7.3 g proprietary blend.

A smooth, low-caffeine (48 mg) organic mushroom coffee that went viral, but its 2 g six-mushroom blend is far below doses used in research.

Onnit's Joe Rogan-backed, caffeine-free nootropic; most ingredients sit in three proprietary blends, and the doses that are disclosed are small.

A pricey 2 oz nootropic shot with 55 mg caffeine and 10+ adaptogens, but its actives sit in an undisclosed 11.7 g blend and it costs about $5 a shot.