Mirtazapine
Mirtazapine is an antidepressant used for selected depressive disorders. Listed uses include Depression.
Key points
- It can cause sedation, increased appetite and weight gain.
- Mood and suicidal thinking need close follow-up after treatment changes.
- Suicidal intent, severe infection signs or serotonin toxicity needs urgent care.
Select a listed product and pack to order online. Ask your doctor or pharmacist whether it suits you and what monitoring it needs.
Important safety checks
Bipolar symptoms, suicide risk, weight, blood counts, liver or kidney health and sedating medicines require review.
When to seek urgent care
Seek urgent help for suicidal intent, seizures, fever with severe sore throat, or severe agitation with fever and rigidity.
Further reading
What is mirtazapine used for?
Mirtazapine is an antidepressant used for depression, including major depressive disorder.
How does mirtazapine work?
Mirtazapine boosts noradrenaline and serotonin activity in the brain by blocking alpha-2-adrenergic receptors and serotonin 5-HT2 and 5-HT3 receptors. This raises the levels of these two chemicals.
Which product contains mirtazapine?
The mirtazapine product on SGMeds is Remeron, and its page gives the strengths and pack sizes.
What is mirtazapine called in other countries?
In other countries, mirtazapine is also sold as Zispin. Brand names vary between countries, so compare products by their active ingredient.
How long does mirtazapine take to work?
Mirtazapine can take 1 to 2 weeks before you notice a change. Mood and any suicidal thoughts need close follow-up, especially after a change in treatment.
What are the side effects of mirtazapine?
You may feel drowsy or have a dry mouth, and some people eat more and put on weight. Dizziness and swelling (oedema) can also happen. A severe drop in white blood cells (agranulocytosis) and seizures are serious and need immediate medical attention.
Can mirtazapine be taken with alcohol or other medicines?
Mirtazapine interacts with alcohol and sedatives (benzodiazepines), and it must not be used with older antidepressants (MAO inhibitors). Tell your doctor or pharmacist if you take any of these.
How much does mirtazapine cost in Singapore?
The product on this page shows a price for each strength and pack size in Singapore dollars, converted from US dollars, so the exchange rate can change the final amount. Larger packs usually cost less per tablet.
Payment and prices →Can I order mirtazapine without a prescription?
Yes. SGMeds does not ask for a prescription to order mirtazapine: we place the order with our pharmacy partner, which prepares it and arranges delivery on your behalf.
Ordering without a prescription →Do you deliver mirtazapine to Singapore?
Yes. Parcels go to Singapore and Malaysia by Express shipping (tracked, up to 1 week) or Regular shipping (up to 3 weeks).
How ordering works →Related articles

Compare SSRI, SNRI, mirtazapine and older antidepressant classes by treatment role, expected timeline, side-effect profile and withdrawal planning.
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