L-Citronellol ((S) -3,7-Dimethyloct-6-en-1-ol) is a natural product with anti-allergic and neuroprotective effects. L-Citronellol inhibits mast cell activation and the release of inflammatory factors by inhibiting the ERK pathway. L-Citronellol inhibits BACE1/PSEN1 and AChE, reduces TNF-α expression and lipid peroxidation, demonstrating the potential of multi-target anti-Alzheimer's disease (AD) [1][2].