Now there are some reasons why you would want to feed fish oil, and in the next article, weâll discuss what those reasons would be and how to find the best fish oil for your dogâs diet (yes, not all fish oils are made the same).
1 Tricyclic antidepressants (TCAs) are some of the first antidepressants used to treat depression. 2  They primarily affect the levels of two chemical messengers (neurotransmitters), norepinephrine and serotonin, in the brain.
It is believed that these brain chemicals can help regulate brain circuits that affect emotions. Major types of antidepressants include: 1  Tricyclic antidepressants (TCAs) are some of the first antidepressants used to treat depression. Although these drugs are effective in treating depression, they have more side effects, so they usually aren't the first drugs used. 2  Monoamine oxidase inhibitors (MAOIs) are another early form of antidepressant. 3  These drugs are most effective in people with depression who do not respond to other treatments.