ADHD medicines in general practice: Ritalin first, a six-to-eight-week trial, and don't treat the sleep you caused

Dr Angela Owens

Developmental paediatrician (Otter Speaker 1, labelled Angela). Medicines, titration, non-drug supports, DevPed Connect. First half of the morning management session.

Charlie

Psychiatrist, Gold Coast. Adult ADHD, sleep, comorbidities, AADPA guidelines, DSM-5 versus DSM-IV changes, eating disorders, retrospective PBS, masking and burnout.

Christy

GP at CDS / Futures clinics. Adult ADHD in general practice; Queensland medical-practitioner versus specialist-GP registration; kids 4–17 versus adults; NSW script border traps.

Asher Khan

Named in Q&A (psychiatrist / colleague). OSA comorbidity rates; GPs continuing a specialist-ratified retrospective script.

Non-drug first — do not refer and wait 18 months

Angela opened management by saying it is not all pharmacologic. Link families to AADPA and ADHD Australia. Push school adjustments. Use the child’s strengths (motorbike maths, not generic “use visuals”). ChatGPT as a homework coach: tell it the child has ADHD, use year-five language instead of year-ten, break the concept down.

Sometimes the school will not shift after years of advocacy. Hard conversation: try somewhere else, or a specialty school. Otter transcribed Togoolulis and Acadia — treat those as garbled; Angela meant specialty schools that teach differently (Tugun-like settings on the Coast). Men of Business for boys going off the rails in years eight and nine — she said they get most of them back on track and often out of juvenile justice.

Before a script: QScript, growth, BP, ECG

Queensland Health / QScript obligations apply. Baseline growth (height and weight). Cardiac red-flag history; if you get an ECG that worries you, get cardiology opinion or request-for-advice before starting. Use a height-percentile blood-pressure app — childhood BP is not adult numbers.

Family diversion risk can tilt you toward long-acting (Vyvanse less sold on the street than short-acting, in her framing). Long-acting stimulants still need the PBS short-acting start for methylphenidate in children — see titration below.

Charlie later: annual cardiovascular health check in adults on stimulants is the practical ask; ECG is not mandatory unless clinically indicated. Long-term lifespan data is thinner than two-year trial data.

Why Angela prefers the Ritalin family first

Flexibility. Methylphenidate gives three durations: short-acting 3–4 hours, Ritalin LA 8–10 hours, Concerta 10–12 hours. Dexamfetamine short-acting about four hours; Vyvanse about 13 hours.

Ask families up front: anything they refuse because of Google or Facebook? Any relative who responded (or failed) on one family? Can the child swallow tablets?

She prefers Ritalin LA over Concerta personally — Concerta seems to make kids angrier more often (different salt). She uses Concerta more in teens. Vyvanse in a seven-year-old who should only be awake about 12 hours is a common way to manufacture insomnia, then treat it with melatonin.

The six-to-eight-week trial and titration

PBS: start methylphenidate short-acting before you can provide long-acting. That annoys teenagers who hate office doses — still required in her pathway.

Trial over six to eight weeks. Reviewing too early, everyone thinks it is magic; by six to eight weeks, life (illness, a bad fortnight) has happened. Set expectation: medicine is maybe 10% of the picture — environment and learning still matter.

• During the trial: dose at home and on weekends so parents see it, not school-only.
• Do not judge “afternoon failure” of a morning-only short-acting — you never covered the afternoon.
• Start 5 mg (half a 10 mg tablet) for a couple of days at home: a small percentage get edgy/dysregulated (coffee-like). Warn them: worst case, a few hours of hell and it is over — no wean.
• Most kids see nothing at 5 mg; effect usually appears at 10 mg. Look only at the morning window first.
• Lowest dose that helps. If five is magic, stay there.
• Then consider lunchtime (half dose in a young child whose literacy is finished by midday; full dose in older kids with homework).
• Conversion: short 10 + 10 ≈ Ritalin LA 20; Concerta 27 ≈ LA 20 (different conversion — check your reference).
• Cap roughly 1 mg/kg. Above that, ask DevPed Connect — it is usually not the milligrams; something else is wrong.

Dysregulated hard on 5 mg? Try a second day if mild; if off the walls, stop. Next: the other stimulant family before second-line atomoxetine / Intuniv — those are “not as good for attention,” and she wants a DevPed Connect chat before you dive deep into them. GPs in this pathway can start stimulants; Intuniv initiation / second-line nuance is where she wants oversight rather than solo improvisation.

Appetite, growth, weekends off

Appetite suppression is expected. Dose after breakfast (Up&Go / protein smoothie if they skip food). Graze if possible. Catch calories at dinner — making up energy in a 12-hour window is okay. Forcing lunch off a long-acting is not always required.

Faltering growth: consider short-acting so a lunch window opens; dietitian; weekends/holidays off if growth is the issue. Default is not weekends off — ADHD is not school-only; friendships, sport, and home emotions still matter. Audience asked about 3–4 cm height loss; Angela’s read of the literature was about 1 cm long-term, and many kids already have natural time off.

Appetite returning after months on a stable dose can be an early hint they are outgrowing milligrams per kilogram — check function across settings before you auto-escalate.

Sleep: do not treat the side-effect you caused

Do not open with melatonin (or clonidine, or Intuniv) for stimulant insomnia. Scale Concerta / Vyvanse back toward Ritalin LA so there is wind-down time. Only then add sleep medicine if needed.

• Melatonin first (2–6 mg; they compound 10 mg/mL liquid — 0.2–0.6 mL). Do not double the stimulant.
• Clonidine second for sleep (less wear-off than Intuniv’s sleep effect).
• Intuniv is not “just for sleep.” Sleep benefit wears off in about 1–2 months; use it for 24-hour coverage, aggression, anxiety add-on. Start at night, later move to morning for daytime effect.

Anxiety, OSA, one target at a time

One target behaviour at a time for six to eight weeks — if you start two medicines and something goes wrong, you do not know which. Atomoxetine is mediocre at both ADHD and anxiety in her framing; better a good stimulant plus a proper anxiety medicine. She avoids activating antidepressants in ADHD kids (Otter “thought team” — most likely fluoxetine); sertraline first in her hands. Ask psychiatry / the Australian psychiatric hotline when adolescent cases get hard.

Asher Khan: ADHD is over-represented for OSA — recent meta-analysis he cited ~44% (prior figures ~25%) versus ~2% background. Take a sleep history before melatonin. Adenoids common in kids.

Masquerades she listed: wrong school pitch / learning mismatch, environmental trauma (worse at home), thyroid, sleep. Do not miss quieter inattentive girls in early adolescence.

Adult ADHD, specialist GP, PBS retrospective

Charlie and Christy took the adult half. Lifelong condition; demands exceed cognitive capacity at transitions (uni, jobs, breakups, parenthood). Untreated ADHD: justice, substance use, productivity, suicide risk. Christy cited Deloitte (~2019) ~$20 billion / year Australian cost of untreated ADHD — old number, still the point against “we are only over-diagnosing.”

Charlie: PBS stimulant scripts rose roughly 11-fold from ~2002 to ~2022 (AIHW / PBS-extrapolated paper). DSM-5 (2013) loosened age-of-onset to under 12, emphasised impairment in more than one area, changed “subtypes” language to presentations — part of the incidence story.

Queensland who can prescribe

Christy’s ethic: just because you can does not mean you should — stay in your lane, call a colleague, same as complex heart failure.

Retrospective PBS, collateral, continuing scripts

PBS retrospective adult diagnosis needs childhood collateral — parent/sibling/school reports. Not a spouse. Without that, private script may still be possible; PBS subsidy is the contested bit. Interpretations of “retrospective” vary between specialists.

Asher Khan: if a psychiatrist has already ratified retrospective criteria and documented it, should the GP refuse to continue? Charlie distinguished never-diagnosed-as-child retrospective work from a childhood diagnosis with lost paperwork. Christy: it comes down to documentation quality and whether the GP carrying PBS audit risk is satisfied.

Girls, masking, autism leftover, eating disorders, depression

• Girls more inattentive presentation; masking and social nuance costs; adult sex ratio nearer equal or female-skewed in clinics.
• Treat ADHD and see what is left of the autism picture — ADHD has a clearer pharmacologic lever; adult ASD pathway is more about understanding and supports.
• Do not diagnose ADHD in active eating disorder / starvation (Angela + Charlie; Minnesota starvation study). Wait until fed and stable — starvation mimics psychiatry.
• Stimulants are not first-line for depression; off-label Queensland Health authority required. Separate question: untreated ADHD can look like treatment-resistant anxiety/depression — Christy’s mid-40s woman with lifelong “depression,” EMDR, psychology since age 10, still judging herself for executive failures (ADHD tax).

Take-home messages for clinic

1. Non-drug is not optional. AADPA, ADHD Australia, school adjustments, specialty schools / Men of Business, ChatGPT as year-level coach. Do not refer and freeze for 18 months.
2. Baseline: QScript, height + weight, height-percentile BP, cardiac history. Adult annual CV check; ECG only if indicated.
3. Ritalin family first for duration flexibility. LA over Concerta in her hands; Vyvanse too long for many primary-school waking days.
4. PBS short-acting first, then LA. Six-to-eight-week trial with weekend + home dosing. 5 mg home test → 10 mg morning effect → lunch → convert.
5. ~1 mg/kg cap. Above that, phone DevPed Connect — usually not milligrams.
6. Appetite: after breakfast; graze; catch dinner. Weekends off for growth problems, not by default.
7. Growth literature ~1 cm long-term in her summary (not the 3–4 cm the room floated).
8. Sleep: fix stimulant duration before melatonin. Melatonin → clonidine. Intuniv for 24 h / aggression / anxiety, not as a sleep drug.
9. One comorbidity target at a time. Sertraline over activating antidepressants in her ADHD-anxiety kids. Screen OSA before melatonin.
10. Adults in QLD: specialist GP registration (FRACGP + Ahpra specialist). Kids 4–17 any medical practitioner. No extra ADHD course. NSW fill traps. PBS retrospective needs childhood collateral, not a spouse. Continuing a specialist-ratified script ≠ making the retrospective call yourself.
11. Do not diagnose ADHD in starvation. Treat ADHD and reassess autism leftover. Stimulants are not first-line antidepressants — but untreated ADHD can masquerade as refractory mood/anxiety.

Dr Kotha · Gold Coast · adhd-management.drkotha.com