PRODUCT AVAILABILITY: Did you know you can view a product's availability right on the product page? Simply enter the quantity you want to purchase and the current availability will appear below the item.
Not yet rated
NOTE: Due to special handling or shipping requirements, these products will have additional fees added during checkout. Click HERE for a description of what fees might be charged.
A naturally occurring steroid alkaloid that acts as a potent histamine H3 receptor antagonist (Kis = 5.2 and 24.5 nM for rat and human, respectively) that efficiently crosses the blood-brain barrier but has a poor rate of CNS clearance.