DRAPER, Utah--(BUSINESS WIRE)--Xel Pharmaceuticals, Inc. announced today the completion of the development of its once-a-week Huperzine A transdermal patch for the treatment of Alzheimer’s disease (AD). The prototype transdermal patch can deliver 400–800 mcg of Huperzine A per day for up to seven days. Huperzine A is a naturally occurring alkaloid found from the club moss Huperzia serrata that has been used for decades in China as a prescription medication for the treatment of dementia. Huperzine A is a potent, highly selective and reversible inhibitor of acetyl cholinesterase. Additionally, Huperzine A has anti-oxidative properties and possesses neuro-protective properties against glutamate that induce neuronal toxicity at the N-methyl-D-aspartate (NMDA) receptor.