Talebi, M.; Mojab, F. A Systematic Review of Preclinical and Clinical Studies on Therapeutic Potential of Piper Nigrum on Cognitive Impairment in Alzheimer’s Disease and Other Biological Conditions of Memory Loss: Piper Nigrum Effects on Cognitive Impairment and Alzheimer. Int Pharm Acta 2022, 5, e3:1-14.