Examples of agents the combinations of this invention may also be combined with include, without limitation treatments for Alzheimer s Disease such as Aricept and Excelon; treatments for HIV such as ritonavir; treatments for Parkinson s Disease such as L DOPA carbidopa, entacapone, ropinrole, pramipexole, bromocriptine, pergolide, trihexephendyl, and amantadine; agents for treating Multiple Sclerosis MS such as beta interferon e what is doxycycline used for in dogs Prostate cancer patients tend to be older men