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You may be vitamin B deficient if you experience some or all of the following unexplained symptoms: Skin cracks around the mouth Scaly lip skin Skin rashes Fatigue Anemia Depression or irritability Confusion Diarrhea or constipation Abdominal cramps Tingling or numbness in your feet and hands Vitamin B12 deficiency is particularly serious, as it increases your risk for neuropsychiatric disorders
Nature Chemical Biology
Sangle, Prerna, et al
Peptides such as Semax, Dihexa, Pinealon, Epitalon, and other compounds are sometimes promoted for memory, focus, neurological support, or longevity
Research Use Only Notice Designated as research-use-only material
Still, the following will usually appear tired, pale skin, weakness, shortness of breath, a fast heartbeat, and a feeling that you are out of breath
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