Daridorexant vs Zopiclone: What’s the Difference?

If you've previously been prescribed zopiclone for sleep, you may have started hearing about a newer treatment called daridorexant.

Both are prescription medicines used in insomnia care.

But they work very differently and aren't intended to play exactly the same role.

How does zopiclone work?

Zopiclone is a Z-drug hypnotic.

It acts on GABA-related signalling in the brain to produce a sedative effect and is generally intended for short-term treatment of severe insomnia.

Concerns with longer-term use include tolerance, dependence and withdrawal. NICE discussions describe Z-drugs such as zopiclone as treatments generally restricted to short durations because of these risks.

How is daridorexant different?

Daridorexant is a dual orexin receptor antagonist or DORA.

Rather than enhancing broad sedative pathways, it blocks orexin receptors involved in promoting wakefulness.

In simple terms:

Zopiclone promotes sedation.

Daridorexant reduces the brain's drive to stay awake.

Daridorexant is specifically licensed for adults with insomnia symptoms present for at least three months and with a considerable impact on daytime functioning.

Which is for long-term insomnia?

This is perhaps the biggest distinction.

Zopiclone is normally used as a short-term hypnotic.

Daridorexant was developed and studied specifically in people with chronic insomnia, including clinical data extending to 12 months.

NICE recommends daridorexant for qualifying long-term insomnia when CBT-I has been tried without success, or when CBT-I is unavailable or unsuitable.

What about addiction and withdrawal?

This requires careful wording.

Z-drugs can cause dependence and should not normally be stopped suddenly after prolonged use without professional advice.

In daridorexant insomnia trials, researchers found no evidence of withdrawal symptoms indicative of physical dependence after treatment discontinuation.

However, that does not mean daridorexant has zero abuse potential. Its product information advises careful monitoring in people with a history of alcohol or substance misuse.

Is one “better”?

Not in every situation.

They have different indications, mechanisms and intended treatment roles.

The appropriate choice depends on the nature and duration of the insomnia, other medicines, medical history and what has already been tried.

How Pharmulous can help

Chronic insomnia deserves a proper sleep assessment, rather than repeatedly cycling through sleeping tablets.

Our clinicians can review the duration and pattern of your insomnia, previous treatments, CBT-I history, other medication and daytime impact when considering your options.