What are some other supplements for focus?

Other supplements that may support focus include Alpha-GPC, L-tyrosine, phenylethylamine (PEA), and alpha-yohimbine.

• Alpha-GPC: Supports acetylcholine transmission, which is involved in focus. Common focus doses are 300–600 mg. 1
• L-tyrosine: A dopamine precursor; reported doses range from 100–1,200 mg. Finding a suitable dose can be difficult: too much may cause euphoria, jitters, or over-alertness that interferes with focus. 2
• Phenylethylamine (PEA): Huberman describes it as part of the dopamine pathway and a short-lived option. He sometimes uses 500 mg in place of L-tyrosine or combines it with Alpha-GPC and caffeine for demanding work. 3
• Alpha-yohimbine: A potent stimulant sometimes used to increase alertness, but it can cause significant anxiety for some people. 4