Known more commonly as tulsi, holy basil is also recognized for its ability to fight various allergies and allergy symptoms, which often lead to feelings of "brain fog" and mental incapacity. Individuals that supplement with holy basil, particularly in conjunction with other adaptogenic herbs, have found that they are able to breathe better, digest food better, think better, and generally feel better, regardless of their particular health conditions. (http://www.naturalnews.com/Holy_Basil.html)
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