Doxepin, trazodone, and the sleep drugs your doctor reaches for last

The prescription you are probably not being offered

You describe your insomnia to a GP. You walk out with a prescription for zolpidem or a suggestion to try melatonin. Neither fixes the problem. Zolpidem builds tolerance in weeks, suppresses slow-wave sleep, and carries a dependency risk. Melatonin addresses sleep timing in people with a circadian problem, which is a different problem from the one most insomnia patients actually have.

Three medication classes have substantially better profiles for chronic adult insomnia, particularly the maintenance subtype (falling asleep is fine, staying asleep is not). They are doxepin at low dose, trazodone, and the dual orexin receptor antagonists (DORAs). All three are available by prescription. Telehealth access through Hims Sleep puts all of them within reach without a specialist referral.

The prescribing habits have not kept up with the pharmacology. That gap is the article.

What each one actually does

Low-dose doxepin (Silenor, 3 mg or 6 mg) works by blocking histamine H1 receptors selectively at very low doses. Histamine is a wakefulness-promoting neurotransmitter. At 3 mg, doxepin does not produce the anticholinergic side effects (dry mouth, constipation, urinary retention) associated with the antidepressant doses of the same drug (75 to 150 mg). It has no dependency risk and no tolerance buildup. The FDA approved it specifically for sleep maintenance insomnia. It is the only drug approved for that indication at that mechanism. Most general practitioners have never written this prescription.

Trazodone is an antidepressant at full dose (150 to 300 mg) but a sedating antihistamine and serotonin modulator at sleep doses (25 to 100 mg). It is widely used off-label for insomnia, has no meaningful dependency risk, and tends to help with sleep onset and maintenance simultaneously. Its sedating effect is primarily from histamine and alpha-1 adrenergic blockade. It is generic. It is cheap. And it has been used safely for decades at these doses.

DORAs (suvorexant / Belsomra, lemborexant / Dayvigo) block orexin receptors in the lateral hypothalamus. Orexin (also called hypocretin) is the brain’s primary wakefulness-promoting peptide. DORAs turn off the wake signal rather than imposing sedation. The result is sleep that is neurochemically closer to natural sleep than any other pharmacological option. No rebound insomnia, no physical dependence, better next-day alertness than Z-drugs. The downside is cost. They are not yet generic.

Why Z-drugs dominate despite worse outcomes

Zolpidem (Ambien) launched in 1992. A generation of physicians trained on it. It is generic, familiar, and fast. For acute situational insomnia lasting a few nights, it is reasonable. For chronic maintenance of insomnia in a midlife adult, it is the fire alarm approach: it suppresses the symptom without touching the cause.

Z-drugs suppress slow-wave sleep. That is the stage when growth hormone is released, and cellular repair occurs. Chronic Z-drug use in middle age is essentially trading short-term sleep onset for long-term deterioration in the most restorative part of the sleep cycle. The FDA added a black-box warning for complex sleep behaviors in 2019. The prescribing habits have been slow to change.

The Livium recipe

Tool. Before starting any sleep medication, get a home sleep test from Lofta. Undiagnosed obstructive sleep apnea (OSA) makes insomnia medications substantially less effective and, in some cases, counterproductive. If you have an Oura Ring, SpO2 dips below 94 percent on multiple nights is a strong enough signal to prioritize the sleep test before the medication conversation.

Behavior. Once OSA is ruled out, book a telehealth sleep consultation through Hims Sleep. Be specific about your insomnia subtype: difficulty falling asleep, difficulty staying asleep, or both. That distinction determines whether doxepin (maintenance), a DORA (onset and maintenance), or trazodone (flexible dosing, both subtypes) is the better starting point. Come with your tracker data. The physician can use it.

Threshold. A successful medication trial looks like: sleep onset under 20 minutes, wake-after-sleep-onset under 30 minutes, no significant next-day cognitive impairment, and improved subjective sleep quality. Track these with your wearable for four weeks before drawing conclusions. If the first option does not move all four, there are two more on this list.

Sleep medication comparison

Source: Livium editorial synthesis based on Hims Sleep prescribing resources and AASM Clinical Practice Guidelines for Chronic Insomnia.

What to do tonight while you sort out the prescription side

The medication conversation takes time. A telehealth consultation, a prescription, and a pharmacy fill take about a week. These four things cost almost nothing, require no prescription, and address the environmental and nutritional variables that compound maintenance insomnia regardless of which drug you end up with.

Magnesium glycinate. 200 to 400 mg before bed. Magnesium modulates GABA receptors and reduces cortical hyperarousal, the same mechanism as some prescription sleep aids, at a fraction of the potency and with zero dependency risk. It will not fix clinical insomnia on its own. It belongs in the stack regardless of what you are prescribed. Available on Amazon for under $25 a month.

Blackout sleep mask. Light is a wakefulness signal. Even dim ambient light through closed eyelids suppresses melatonin and increases arousal threshold during the second half of the night, exactly when maintenance insomnia strikes. A Manta sleep mask produces a complete blackout and costs under $40. It is the single cheapest environmental intervention with a measurable effect on sleep maintenance.

White noise machine. Noise arousals are a common driver of middle-of-the-night waking that no sleep medication addresses directly. A white noise machine masks the acoustic spikes that pull the sleeping brain toward wakefulness. Under $50. Works the first night.

Sleep tracker. You cannot optimize what you are not measuring. An Oura Ring tracks the percentage of deep sleep, HRV, and resting heart rate nightly. When you start a new medication, you will want a baseline to compare against. Start the tracker before the prescription, not after.

Plan of action

• If you are currently taking zolpidem nightly and have been for more than two months, do not stop abruptly. Book a telehealth consultation with Hims Sleep to discuss a tapering protocol and transition to a better option.
• If you have never had a sleep study, get a Lofta home sleep test before starting anything new. Untreated OSA and insomnia treatment are a counterproductive combination.
• Ask specifically about low-dose doxepin if your primary complaint is waking in the second half of the night. Most GPs will not offer it without being prompted. The dose is 3 mg or 6 mg, not the 75 mg antidepressant dose.
• Track your results with an Oura Ring or similar wearable. Deep sleep percentage and HRV are the markers most likely to move with effective insomnia treatment.