Antidepressants

Antidepressant items turn on timing, stacking, and crisis recognition: mood drugs do not flip a switch overnight, and the wrong food or second serotonergic drug can kill. Psychosis, lithium, EPS, NMS, and clozapine stay in Mental health conditions.

How antidepressants work on exams

Most tested antidepressants raise synaptic serotonin, norepinephrine, or both. The brain adapts slowly, so therapeutic mood effect often takes several weeks even when side effects appear in days. That gap is why adherence teaching and suicide surveillance both matter early: the client may feel side effects before hope returns, or may gain energy while still hopeless enough to act.

At the bedside, start with safety and teaching: take as prescribed, report worsening depression or ideation, avoid abrupt stops, and bring a full med list before any new serotonergic agent (including some migraine and cough products) is added.

SSRIs, suicide watch, and serotonin syndrome

SSRIs are first-line on many stems. Early nausea, headache, sleep change, and sexual dysfunction are common and often improve. Sexual side effects may persist and need a provider conversation, not shame. Abrupt stop can cause dizziness, flu-like feelings, and irritability. Taper as ordered.

Suicide watch in the first weeks

1. Ask directly about suicidal thoughts at start and after dose changes.
2. Involve family or support for means restriction when risk rises.
3. Do not dismiss I feel better without checking for sudden energy plus ongoing hopelessness.
4. Limit lethal means access in high-risk clients (same logic as TCA bottle size).

Why energy before mood is dangerous: psychomotor activation can return before mood lifts. The client who could not get out of bed last week may now have the energy to enact a plan. That is why sudden brightening, gift-giving, or a new concrete plan during week one to three is an escalate-now picture, not proof the drug cured depression overnight.

Serotonin syndrome

Serotonin syndrome happens when serotonergic load overwhelms regulation: SSRI plus another serotonergic drug (tramadol, certain migraine agents, St. John's wort, MAOI overlap), overdose, or illicit MDMA patterns on some stems. Look for agitation, sweating, diarrhea, fever, and neuromuscular excitement (hyperreflexia, clonus) rather than the lead-pipe rigidity pattern of NMS. Stop the offenders, support airway and cooling, and escalate. This is not a PRN lorazepam-and-reassure moment alone.

MAOIs and TCAs

MAOIs block the enzyme that clears tyramine and monoamines. Dietary tyramine (aged cheeses, cured or smoked meats, fermented soy, draft beer, red wine as commonly tested) can trigger hypertensive crisis: severe occipital headache, neck stiffness, extreme BP, and stroke risk. Teach the diet before the first dose and again at every refill.

Combining MAOIs with SSRIs or many pain or migraine agents without a proper washout is a classic setup for serotonin crisis or dangerous BP swings. Washout length is ordered and drug-specific. The nursing move is to stop a casual overlap and clarify with the provider, not to invent a same-day switch because the pharmacy is convenient.

TCAs (amitriptyline, nortriptyline, and kin) are effective but dirty on receptors. Anticholinergic effects bother daily life, and overdose can be rapidly cardiotoxic with arrhythmias and seizures. On exams, a large bottle of TCAs in a high-risk depressed client is a means problem. Collaborate on limited dispensing and safer alternatives when the stem allows. Report new urinary retention, severe constipation, or syncope rather than waiting it out.

• Alcohol and CNS depressants worsen sedation on many antidepressants. Teach honestly.
• Pregnancy and lactation questions go back to the provider. Do not invent stop/start advice.
• Therapeutic communication for hopelessness still matters. Drug teaching does not replace safety assessment.
• For lithium toxicity, EPS, NMS, and clozapine agranulocytosis, see Mental health conditions.

When to hold and what to report

Holding is not stubbornness. It is how you keep a stacking crisis, a washout violation, or a lethal means problem from getting one more dose. Use the table as a first-move map after you recognize the picture in the sections above.

Priority map