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From Ten unorthodox alternatives to caffeine by John Fawkes
Another common herbal nootropic, ginkgo biloba has been shown to increase cognition and short-term memory. It also seems to have a synergistic effect with ginseng, and there are many supplements which combine both herbs- I like this one. The effects take an hour or two to kick in, and it’s best dosed at 120–240 mg, taken with food, 2–3 times a day.
From Ten unorthodox alternatives to caffeine by John Fawkes
Ginseng is a popular adaptogen, meaning it helps your body adapt to stress. It’s not all that stimulating, but provides a relaxed, non-jittery energy. Ginseng can be taken in pill form, or as a tea, and is best taken in divided doses, 2–4 times a day. If you’re not cutting caffeine out altogether, it also combines very effectively with lower doses of caffeine.