The most frequent kind of dementia is Alzheimers disease, a neurological disorder. that progresses over time and affects over 10 million individuals worldwide. It was first published in 1906 by Alois Alzheimer, who wrote on a patient he had seen in 1901. A neurological disease that is complex, progressive, and Alzheimers is characterized by changes in personality, memory loss, and a decrease in mental abilities. A number of medical systems, most notably the Unani system, have employed medicinal plants, which have proven to be effective in treating and managing memory problems. The neuroprotective properties of these herbs are then explained by the bioactive components. Alkaloids, polyphones, terpenoids, and flavonoids are among the compounds being investigated for their potential to reduce oxidative stress, reduce neuroinflammation, and alter important molecular pathways connected to the pathophysiology of Alzheimers disease. Clinical experiments have confirmed the efficacy of most herbs and plants, and their chemical evaluation has also been completed. Still, the fundamental workings of acts are not fully understood. Herbal and medicinal plant remedies are becoming more popular as complementary and alternative therapies.The role of bioactive components in neurodegenerative herbs and their significance for loss of memory connected to Alzheimers and Before Alzheimers is reviewed in-depth in this article based on a systematic review of recent research. The paper covers the probable mechanisms of action for these herbal ingredients therapeutic benefits, such as antioxidant activity, anti-inflammatory characteristics, cholinesterase inhibition, and neurotransmitter system regulation.