Every week in my clinic, I see patients aged 30, 40, 50 and beyond who are carrying the same heavy burden: can’t fall asleep, can’t stay asleep, waking up unrefreshed, and feeling anxious or flat during the day. Many have tried over-the-counter sleep aids that leave them groggy. Others have been prescribed an SSRI for depression or anxiety, only to find their sex drive has disappeared or their weight has crept up.
What if one medicine could address insomnia, depression, anxiety and even certain chronic pain – without the sexual dysfunction commonly seen with SSRIs, and without the weight gain often seen with mirtazapine? That medicine is trazodone.
Trazodone is a serotonin antagonist and reuptake inhibitor (SARI). Originally developed as an antidepressant, it is now widely prescribed in Australia for its powerful sleep-inducing and sleep-maintaining properties, often at lower doses than those used for depression. It works by modulating serotonin and blocking certain receptors that cause arousal, helping your brain switch into deep, restorative sleep.
| Problem | How trazodone helps |
|---|---|
| Insomnia – difficulty falling asleep | Sedating effect within 30–60 minutes when taken at night |
| Insomnia – waking during the night | Improves sleep maintenance without suppressing deep sleep stages |
| Depression / anxiety | Antidepressant action at doses of 150–300 mg daily |
| Sexual side effects from other antidepressants | Lower risk of erectile dysfunction and anorgasmia; may even be used as add-on |
| Weight gain from mirtazapine | Trazodone is generally weight-neutral |
| Chronic neuropathic or tension pain | Off-label use for pain modulation and sleep improvement |
Both trazodone and mirtazapine are sedating antidepressants used off-label for insomnia. However, many Australian patients over 30 prefer trazodone because:
That said, mirtazapine may be better if you also need appetite stimulation or have severe nausea. For most otherwise healthy adults whose main complaint is lying awake at night, trazodone is often the first choice.
One of the most distressing side effects of many antidepressants is sexual dysfunction – erectile difficulties, delayed ejaculation, loss of libido. Trazodone has a much lower incidence of these problems than SSRIs and SNRIs. In fact, some Australian psychiatrists add low-dose trazodone to an SSRI to help reduce SSRI-induced sexual dysfunction.
Important caution: Trazodone can rarely cause priapism – a prolonged, painful erection lasting more than 4 hours. This is a medical emergency. The risk is low (approximately 1 in 6,000 men), but if it occurs, seek immediate medical attention. For most men, however, trazodone is a welcome alternative that preserves sexual function while treating mood and sleep.
If you have glaucoma, particularly narrow-angle or angle-closure glaucoma, you must discuss this with your doctor before starting trazodone. Trazodone can cause pupil dilation, which may increase intraocular pressure in susceptible individuals.
For patients with open-angle glaucoma that is well-controlled, trazodone may still be used with regular eye pressure monitoring. Always tell your ophthalmologist and GP about all medications you are taking.
Some patients with bipolar disorder or treatment-resistant depression take lithium. Trazodone and lithium can be used together, but close monitoring is essential. The combination may increase the risk of serotonin syndrome or lithium toxicity.
| Parameter | Frequency |
|---|---|
| Serum lithium level | Every 3–6 months, or more often if dose changes |
| Renal function (creatinine, eGFR) | At least every 6 months |
| Signs of serotonin syndrome (agitation, sweating, tremor, fever) | At every review |
| ECG if cardiac risk factors present | Baseline and as clinically indicated |
Many Australians over 30 take magnesium supplements for sleep, muscle cramps or migraine. Trazodone and magnesium generally do not have a dangerous interaction. In fact, magnesium may complement trazodone’s calming effect because magnesium supports the parasympathetic nervous system and helps regulate melatonin.
However, both trazodone and magnesium can lower blood pressure slightly. If you take high-dose magnesium or blood pressure medication, monitor for dizziness when standing. A typical magnesium glycinate or citrate supplement at 200–400 mg at night is usually safe alongside low-dose trazodone.
Yes. Australian pain specialists and GPs increasingly prescribe trazodone off-label for chronic pain conditions such as fibromyalgia, tension-type headache, chronic low back pain and neuropathic pain. The benefit is twofold:
Doses for chronic pain are usually 50–150 mg at night, often combined with physiotherapy and psychological support. It is not a first-line painkiller, but for patients whose pain is worsened by poor sleep, it can be transformative.
While trazodone is not first-line for adolescents in Australia, it is sometimes used under specialist care for insomnia or anxiety when other treatments have failed. Dosing is conservative:
| Age group | Starting dose | Maximum common dose |
|---|---|---|
| 12–15 years | 12.5–25 mg at night | 50 mg at night |
| 16–17 years | 25 mg at night | 100 mg at night |
Regular review, mood monitoring and family involvement are essential. Trazodone should only be used in adolescents under the guidance of a child and adolescent psychiatrist or paediatrician.
This is a question I hear constantly: “Can I buy trazodone online in Australia?”
Yes, but only with a valid Australian prescription. Trazodone is a Schedule 4 prescription-only medicine under the Therapeutic Goods Administration (TGA). It is illegal to import or purchase trazodone from overseas without a prescription. Australian-registered online pharmacies that require a script are legal and safe.
| Method | Legality | Risk |
|---|---|---|
| Australian online pharmacy with prescription | Legal | Low – genuine medicine, TGA approved |
| Overseas website without prescription | Illegal | High – counterfeit, wrong dose, customs seizure |
| Telehealth GP consult → e-script → online pharmacy | Legal | Low – convenient and regulated |
Do not buy trazodone from unregulated overseas websites. Protect your health, your legal standing and your wallet by using only TGA-approved Australian pharmacies.
If you are over 30 and struggling with poor sleep, low mood, chronic pain, or the sexual side effects of other antidepressants, trazodone deserves a serious conversation with your doctor. It is not a magic pill, but for many Australians it has restored nights, relationships and quality of life. With proper monitoring – especially for lithium interactions, glaucoma, and the rare risk of priapism – trazodone is a safe, effective and well-tolerated choice.
Take action today. A good night’s sleep might be one script away.