Question

class of antidepressant drugs that increase the availability of neurotransmitters in the brain
selective serotonin reuptake inhibitors
antianxiety drugs
antipsychotics
monoamine oxidase inhibitors
tricyclics

Explanation:

• Selective serotonin reuptake inhibitors (SSRIs) work by blocking the reuptake of serotonin (a neurotransmitter) in the brain, thus increasing its availability.
• Antianxiety drugs are mainly for reducing anxiety symptoms, not specifically focused on increasing neurotransmitter availability in the way described.
• Antipsychotics are used to treat psychosis (e.g., in schizophrenia) and do not primarily target increasing neurotransmitter availability as described.
• Monoamine oxidase inhibitors (MAOIs) work by inhibiting the enzyme monoamine oxidase which breaks down neurotransmitters like serotonin, norepinephrine, and dopamine. But the most commonly associated class with the simple mechanism of increasing neurotransmitter (serotonin specifically in a more targeted way) availability as per the general description is SSRIs.
• Tricyclics have more complex mechanisms and side - effect profiles compared to the straightforward action of SSRIs in increasing neurotransmitter (especially serotonin) availability.

Answer:

selective serotonin reuptake inhibitors