🧠 Focus & Cognition
23 compounds that help you focus & cognition, ranked by strength of human evidence — in plain English, with honest verdicts.
- Caffeine — ★★★★★
- Modafinil / Armodafinil — ★★★★★
- Amphetamine (Adderall) / Lisdexamfetamine (Vyvanse) — ★★★★★
- Methylphenidate (Ritalin) — ★★★★★
- L-Theanine — ★★★★☆
- Tesamorelin (Egrifta) — ★★★★☆
- Citicoline (CDP-Choline) — ★★★★☆
- Bacopa Monnieri — ★★★★☆
- Spermidine — ★★★☆☆
- Racetams (Piracetam, Aniracetam, Oxiracetam, Phenylpiracetam) — ★★★☆☆
- Noopept — ★★★☆☆
- Alpha-GPC — ★★★☆☆
- Lion's Mane (Hericium erinaceus) — ★★★☆☆
- Methylene Blue — ★★★☆☆
- Nicotine (non-combusted) — ★★★☆☆
- L-Tyrosine — ★★★☆☆
- Acetyl-L-Carnitine (ALCAR) — ★★★☆☆
- Phosphatidylserine (PS) — ★★★☆☆
- Semax / Selank — ★★☆☆☆
- Bromantane — ★★☆☆☆
- Phenibut — ★★☆☆☆
- Dihexa — ★☆☆☆☆
- Huperzine A · Ginkgo · Panax Ginseng · Uridine (brief) — ☆☆☆☆☆