An exothermic reaction occurs when the energy used to break the bonds in the reactants (the starting stuff) is less than the energy released when new bonds are made in the products (the stuff you end up with).
ApivarÂ® (active ingredient: 3.33% amitraz) is a sustained-release plastic strip designed for use in honey bee hives. Honey supers must be removed from hives before undergoing treatment wtih amitraz, and cannot be replaced until 14 days after the strips are removed.
Vardenafil is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Vardenafil is in a class of medications called phosphodiesterase (PDE) inhibitors. It works by increasing blood flow to the penis during sexual stimulation. This increased blood flow can cause an erection.