6.5 Common Medications, Side Effects, and the Generalist Role

The Scope Boundary Comes First

The ASWB Bachelors outline lists "use and side effects of common prescription, over-the-counter, and alternative medications" under Assessment Practices. Candidates must know enough pharmacology to recognize, document, and refer — and must never cross into prescribing behavior.

Within the generalist role: observing and documenting side effects; asking about adherence without judgment; educating a client about what their prescriber said; helping with cost, transportation, pill organizers, and refill logistics; coordinating between prescribers; and communicating observations to the prescriber with a release.

Outside the role, always wrong on the exam: telling a client to stop, start, skip, split, or change a dose; predicting whether a medication will work; recommending a specific drug; interpreting a lab value; or telling a client that a supplement can replace a prescription.

The most commonly tested error: a client reports distressing side effects and the worker says "try stopping it and see how you feel." The correct response is always to facilitate contact with the prescriber, urgently when the symptom is dangerous.

Antidepressants

Three rules that recur:

• Antidepressants take time. Typical onset of mood benefit is two to six weeks; sleep and appetite often improve first. A client who stops after five days "because it isn't working" needs psychoeducation, not a medication change.
• Discontinuation syndrome. Abruptly stopping an SSRI or SNRI, particularly a short half-life agent like paroxetine or venlafaxine, produces dizziness, flu-like symptoms, irritability, and electric-shock sensations. This is not addiction; it is a physiologic response, and it is why tapering is supervised by the prescriber.
• Activation and early risk. Energy and initiative can improve before hopelessness resolves, so the early treatment period warrants increased suicide monitoring, especially in adolescents and young adults.

Serotonin syndrome is the emergency to recognize: agitation, confusion, rapid heart rate, high blood pressure, dilated pupils, muscle rigidity, hyperreflexia, tremor, sweating, diarrhea, and high fever — typically after adding a second serotonergic agent, including some over-the-counter and herbal products. It requires emergency medical care.

Mood Stabilizers and Antipsychotics

• Lithium has a narrow therapeutic index and requires serum level monitoring plus periodic kidney and thyroid checks. Early toxicity: vomiting, diarrhea, coarse tremor, ataxia, slurred speech, confusion, drowsiness. Dehydration, sodium loss, NSAIDs, and some diuretics raise levels. A client on lithium with vomiting in hot weather is a medical urgency, not a behavioral event.
• Valproate / divalproex — sedation, weight gain, tremor, hair thinning, liver effects; contraindicated in pregnancy due to neural tube defect and neurodevelopmental risk.
• Lamotrigine — generally well tolerated; any rash requires immediate medical evaluation because of the risk of Stevens-Johnson syndrome.
• Carbamazepine — many drug interactions; reduces effectiveness of hormonal contraception.
• First-generation antipsychotics (haloperidol, fluphenazine) — extrapyramidal symptoms: acute dystonia (muscle spasm, often neck or eyes, early and frightening), akathisia (inner restlessness and inability to sit still, associated with suicidality and frequently mistaken for anxiety or agitation), parkinsonism (tremor, rigidity, shuffling gait), and tardive dyskinesia (late-onset involuntary movements, often of the mouth and tongue, potentially irreversible).
• Second-generation antipsychotics (risperidone, olanzapine, quetiapine, aripiprazole) — metabolic syndrome risk: weight gain, dyslipidemia, and type 2 diabetes, with olanzapine among the highest. Metabolic monitoring is standard care and a legitimate topic for case management follow-up.
• Clozapine — reserved for treatment-resistant illness; requires regular absolute neutrophil count monitoring because of agranulocytosis risk. A client on clozapine with fever and sore throat needs same-day medical evaluation.
• Neuroleptic malignant syndrome — an emergency: high fever, lead-pipe muscle rigidity, altered consciousness, and autonomic instability.

Akathisia deserves special emphasis. It is frequently misread as anxiety, agitation, or "acting out," and it is genuinely intolerable. A client who cannot sit still, paces constantly, and says "I feel like I need to jump out of my skin" after a medication change should be referred urgently rather than offered relaxation training.

Anxiolytics, Sedatives, and Stimulants

• Benzodiazepines (lorazepam, alprazolam, clonazepam, diazepam) — sedation, falls and fracture risk in older adults, cognitive impairment, tolerance and dependence, dangerous additive respiratory depression with alcohol and opioids. Withdrawal can cause seizures and can be fatal, so discontinuation is always medically supervised.
• Z-drugs (zolpidem) — sedation, complex sleep behaviors, falls.
• Buspirone — non-dependence-forming anxiolytic with delayed onset; not useful for acute panic.
• Stimulants (methylphenidate, amphetamine salts) for ADHD — appetite suppression, insomnia, elevated heart rate and blood pressure, irritability during wear-off; diversion and misuse risk; growth monitoring in children.
• Atomoxetine and guanfacine — non-stimulant ADHD options with slower onset.

Withdrawal Lethality: The Rule to Memorize

• Alcohol and benzodiazepine withdrawal can kill — seizures and delirium tremens. Both require medical detoxification. Delirium tremens typically appears 48 to 96 hours after the last drink and carries meaningful mortality.
• Opioid withdrawal is severely uncomfortable but rarely fatal in otherwise healthy adults, though it is dangerous in pregnancy and in medically fragile people.

On triage items, the client in alcohol or benzodiazepine withdrawal takes precedence over the client in opioid withdrawal.

Medication-Assisted Treatment

Methadone, buprenorphine (often combined with naloxone), and naltrexone are evidence-based treatments for opioid use disorder, and methadone and buprenorphine substantially reduce overdose mortality. Two exam positions follow directly:

• Requiring a client to discontinue medication-assisted treatment to enter housing, a recovery program, or parenting services is not a defensible standard and functions as a barrier to evidence-based care.
• Naloxone reverses opioid overdose, is available without an individual prescription in most jurisdictions, and providing it plus overdose education is squarely within the generalist role. Naltrexone requires a period of opioid abstinence before initiation and is not an overdose reversal agent — the two are easily confused because the names are similar.

Disulfiram, acamprosate, and naltrexone are the primary pharmacotherapies for alcohol use disorder. Disulfiram produces a severe reaction with any alcohol exposure, including in mouthwash, sauces, and some cold remedies, which is worth reviewing with clients.

Over-the-Counter and Alternative Products

Clients frequently omit these unless asked directly.

• St. John's wort — interacts with SSRIs (serotonin syndrome risk) and reduces the effectiveness of oral contraceptives, some HIV medications, and warfarin.
• Kava — liver toxicity concerns. Kratom — opioid-like effects, dependence, and reported serious adverse events.
• NSAIDs — gastrointestinal bleeding, kidney effects, and elevated lithium levels.
• Acetaminophen — hepatotoxic in overdose, and present in many combination cold and pain products, so accidental cumulative overdose is common.
• Diphenhydramine — frequently used for sleep; strongly anticholinergic and associated with confusion and falls in older adults.
• Dextromethorphan and pseudoephedrine — misuse potential; interactions with serotonergic medications.
• Cannabis products, including high-potency and cannabidiol preparations, interact with several medications and vary widely in actual content.

Adherence Assessment

Ask in a non-blaming, specific way: "Lots of people miss doses. In the past week, how many times did you miss?" Then identify the actual barrier, because each has a different solution: cost (patient assistance programs, formulary alternatives, 90-day supplies), side effects (prescriber contact), belief ("I only need it when I feel bad" — psychoeducation), complexity (pill organizers, blister packs, simplified regimens), access (transportation, pharmacy hours, mail order), memory (alarms, routine anchoring), and stigma (family or community disapproval of psychiatric medication).

Document what the client reports, the observations you make, and the communication you have with the prescriber. That documentation — not a dosage opinion — is the generalist's clinical contribution.