Are you eating well? There are some key nutrients that are essential for making the neurotransmitter serotonin. ADs do not give you any more serotonin, you still have to make it yourself from the food you eat. ADs just keep what you have in the synapse so you use the same molecules of serotonin over and over.
Good nutrition will make the ADs work more effectively. You need
Protein - and specifically the amino acid tryptophan that is in protein foods, this is a building block of serotonin.
B Complex - specifically B6, a co-factor in the production of serotonin. B6 is found in seeds, nuts, fish, poultry. B6 is also used for detoxification by the liver as well as many other body functions so if you have been leaning on your liver to detoxify alcohol, environmental toxins, food coloring and preservatives, BC pills and other medications you will have less B6 to produce your own serotonin. This is one of the reasons why depression is listed as a possible side effect of BC pills and other meds.
Other nutrients needed for conversion of tryptophan into serotonin are zinc, magnesium, copper, iron, vitamin c, and folate.
EPA/DHA from fish, fish oil, wild game or grass fed/pastured poultry and their eggs, beef, lamb etc. This helps by making the membranes that surrounded the nerve cells more fluid and more able to send / receive molecules of serotonin.
If you are under the care of a knowledgeable doctor/nutritionist you can take 5HTP with an AD to increase the serotonin more directly, but this is best not to do on your own, without tests to show you are indeed low on serotonin while taking your med.
Some ADs work with dopamine instead of serotonin, but similar nutrients are needed.
Boosting your diet for a couple weeks might make a huge difference. I know it's hard when you're down to eat well, but at least get in some protein shakes and a B complex and a capsule of fish oil that isn't rancid, Nordic Naturals is a good brand.