Latrepirdine, also known as dimebolin (sold as Dimebon), is an antihistamine drug which has been used clinically in Russia since 1983. Research is continuing in both Russia and western nations into potential applications as a neuroprotective drug to combat Alzheimer's disease and, possibly, as a nootropic as well. However, a Phase III clinical trial for Alzheimer's disease treatment failed to show any benefit. (Source: http://en.wikipedia.org/wiki/Latrepirdine)

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.