0-2 weeks of age: These are the most difficult kittens to hand-rear and if you have successfully done this and got a healthy kitten out at six weeks of age, you can pat yourself on the back because itâs difficult, even for people who do it all the time.
Buproprion is an atypical antidepressant classified as a monocyclic aminoketone. It received FDA approval in 1984 for the treatment of depression. In 1986, buproprion was removed from the market due to an unacceptable incidence of seizures in people who took it. It was reintroduced in 1989 with a lower dosing schedule.
Antidepressant drugs do their work by either increasing the production of neurotransmitters or by breaking them down. There are three major neurotransmitters that are involved in depression. These are called dopamine, norepinephrine, and serotonin. Serotonin is sometimes called 5-HT. When the levels of one or more of these neurotransmitters dip or become unbalanced, depression or other conditions may result. The newest class of antidepressants is called selective serotonin and norepinephrine reuptake inhibitors (SNRI's). The drugs from this class used for depression are Effexor XR (venlafaxine), Cymbalta (duloxetine), and Pristiq (desvenlafaxine). SNRI's are capable of acting on both norepinephrine and serotonin.