This reincarnation may be a improvement in dosing and patient, but the vast majority of these drugs are just insurance funnels meant to drain our premium dollars. We as patients must always be careful not to jump on the newest drug simply because it is the newest drug. Lunesta/eszopiclone is just the left hand isomer of zopiclone/Imovane/Zimovane/Imrest, which is in the same class as all of the Z-drugs (like zolpidem/Ambien). Levocetirizine/Xyzal is just Zyrtec/cetirizine. Lexapro/escitalopram is the patent extension for Celexa/citalopram. Pristiq/desvenlafaxine is the patent extension for Effexor/venlafaxine. Prevacid and AcipHex are "me too" drugs for and Nexium/esomeprazole ("The Healing Purple Pill") is just the active half of omeprazole/Prilosec ("The Purple Pill"). Of course, none of these are inherently superior, just more expensive.