Currently, artemisinin (ART) and many of its semisynthetic derivatives are considered as potential neuroprotectors. The effect of ART in an animal model of Alzheimer's disease (AD) induced by aggregated amyloidogenic peptide Aβ1-42 was studied by electrophysiology and morphology analysis to detect changes in brain memory caused by activation of the entorhinal cortex as synaptic potentiation and depression as well as identifying a correlation with in silico studies of the direct interaction of ART with amyloidogenic peptides 5Aβ17-42 and 18Aβ9-40. We have shown the preventive effect of ART in an animal model of AD. Electrophysiological studies showed that in the pre-injection of ART, there is an obvious and significant decrease in excitotoxicity, which precedes both depressor and excitatory post-stimulus effects, approaching normal, indicating its powerful protective effect. Protection was more effective in relation to the depressor sequence. Histo-morphological analysis showed that the preliminary injection of ART acts as a neuroprotective agent that prevents or slows down damage to brain tissue and also promotes the restoration of neurons and their environment. The conducted in silico studies indicate the direct interaction of ART with amyloidogenic peptides 5Aβ17-42 and 18Aβ9-40 with high binding energies. At the same time, ART can stop the formation and growth of the 18Aβ9-40 fibril, as well as destabilize the already formed amyloid, which correlates with in vivo studies.