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 (INN) is a PDE5 inhibitor used for treating erectile dysfunction that is sold under the trade names Levitra (Bayer AG, GSK, and SP), Staxyn in India, and Vivanza in Italy.ardenafil's indications and contra-indications are the same as with other PDE5 inhibitors; it is closely related in function to sildenafil citrate (Viagra) and tadalafil (Cialis).