Generally, Asian ginseng seems to improve cognitive performance more than American ginseng, though the American form does still have cognitive enhancement potential.22 Korean red ginseng appears to improve concentration, scanning ability, and memory recall and is thought to stabilize the nervous system and decrease neuroinflammation.23 Ginseng also seems to be particularly potent when paired with ginkgo biloba, another nootropic botanical.24 However, a strict meta-analysis from 2010 could only identify five trials that met its stringent requirements for data reliability.102 Among those trials, there was a lack of convincing evidence to show a cognitive enhancing effect of Panax ginseng in healthy participants and no high-quality evidence about its efficacy in patients with dementia. Huperzine A Huperzia serrata (toothed clubmoss) produces a potent compound known as huperzine A
Miess H, Dankworth B, Gouw AM, Rosenfeldt M, Schmitz W, Jiang M, et al
This can lead to different kinds of anemia, fatigue, weakness, tingling in the fingers and toes, numbness, irregular heartbeat, mood swings, shortness of breath, very pale skin, memory loss, confusion, and more
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Individuals with chronic health conditions, those taking prescription medications, and pregnant or nursing persons should consult a qualified healthcare provider before starting either supplement
More on this: Vegan and vegetarian sources of B12 To diagnose a vitamin B12 deficiency, doctors A doctor may order blood tests if they suspect a person has a vitamin B12 deficiency, including a complete blood count and tests to check levels of B12 and folate in the blood