Description
Circadin 2mg is a prescription-only, prolonged-release melatonin tablet used for the short‑term treatment of primary insomnia characterised by poor-quality sleep in adults aged 55 and over. It releases melatonin gradually through the night to support a more natural sleep pattern. If suitable, you can order Circadin 2mg tablets online in the UK after an eligibility and safety review.
Buy Circadin 2mg Online UK
Want to buy Circadin 2mg prolonged‑release melatonin online in the UK? Circadin is used as a regulated sleep treatment for eligible adults, with clinician oversight. Complete a quick consultation to confirm suitability and check interactions before you order.
At a Glance
- Active ingredient: melatonin 2mg (prolonged‑release)
- Use: short‑term primary insomnia in adults aged 55+
- How to take: 1 tablet daily, after food, 1-2 hours before bedtime
- Duration: usually short‑term; can be continued up to 13 weeks if advised
- Tablet handling: swallow whole do not crush or chew
What Circadin 2mg Treats
Circadin is licensed for primary insomnia (difficulty falling asleep, staying asleep, or poor sleep quality) in adults aged 55+. It is not a general over‑the‑counter sleep supplement.
Circadin and Jet Lag
Melatonin is sometimes used to help adjust the body clock after long‑haul travel, but Circadin’s UK licence is for primary insomnia in adults aged 55+. If you are looking for jet lag support, a clinician can advise whether melatonin is appropriate for your situation and what timing is safest.
How Circadin Works
Melatonin is a hormone naturally produced by the body to signal night-time and regulate the sleep wake cycle. Circadin’s prolonged‑release formulation mimics overnight melatonin secretion by releasing the dose gradually, which can help improve sleep quality in eligible patients.
How to Take Circadin 2mg
Take 1 tablet (2mg) once daily, after food, 1-2 hours before bedtime. Swallow the tablet whole with water.
- Do not crush, chew, or split the tablet (this can affect prolonged release).
- If you miss a dose, take the next dose at your usual time — do not double up.
- Avoid alcohol when taking Circadin.
Who Can Use Circadin?
- Adults aged 55+ with primary insomnia (poor-quality sleep)
- Those who need a short‑term, regulated melatonin option under clinician guidance
Who Should Not Use Circadin (or Needs Extra Caution)
- Under 18s (not recommended)
- Pregnant or breastfeeding (seek medical advice first)
- People taking medicines that may interact (e.g., sedatives, antidepressants, immunosuppressants)
- People with autoimmune conditions or significant liver problems (requires clinician advice)
Ingredients
Active ingredient: Melatonin 2mg (prolonged‑release).
Contains lactose (lactose monohydrate). For full excipients, see the pack leaflet.
Circadin Side Effects
Side effects are usually mild. If side effects persist or worsen, stop and seek medical advice.
- Drowsiness
- Headache
- Dizziness
- Nausea
Storage
Store as directed on the packaging, away from direct heat and moisture, and keep out of reach of children.
How to Order Circadin Online (UK)
- Complete the online sleep questionnaire and medication check.
- A UK‑registered clinician reviews your answers for safety and suitability.
- If appropriate, Circadin 2mg tablets are prescribed and supplied for delivery.
FAQs
- Is Circadin the same as melatonin supplements?
Circadin is a prescription-only prolonged‑release melatonin product with a specific UK licence for primary insomnia in adults aged 55+.
- When should I take Circadin 2mg?
Take 1 tablet after food, 1-2 hours before bedtime, at a consistent time each night.
- How long can I take Circadin for?
It is typically short‑term. Treatment may be continued for up to 13 weeks if advised by a clinician.
- Can I crush or split Circadin tablets?
No. Swallow whole to preserve the prolonged‑release effect.
- Can Circadin interact with other medicines?
Yes. Tell the clinician about all medicines and supplements, especially sedatives, antidepressants, and immunosuppressants.

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