Description
The active substance of Circadin, melatonin, belongs to a natural group of hormones produced by the body.
Circadin is used on its own for the short-term treatment of primary insomnia (persistent difficulty in getting to sleep or staying asleep, or poor quality of sleep) in patients aged 55 years and older.
‘Primary’ means that the insomnia does not have any identified cause, including any medical, mental or environmental cause
Uses / Instructions
The recommended dose is one Circadin tablet (2 mg) taken daily by mouth, after food, 1-2 hours before bedtime.
- You should swallow the tablet whole.
- Circadin tablets should not be crushed or cut in half.
Warnings
Talk to your doctor or pharmacist before taking Circadin.
- If you suffer from liver or kidney problems. No studies on the use of Circadin in people with liver or kidney diseases have been performed, you should speak to your doctor before taking Circadin as its use is not recommended.
- If you have been told by your doctor that you have an intolerance to some sugars.
- If you have been told you suffer from an autoimmune disease (where the body is ‘attacked’ by its own immune system). No studies on the use of Circadin in people with auto-immune diseases have been performed; therefore, you should speak to your doctor before taking Circadin as its use is not recommended.
- Circadin can make you feel drowsy, you should be careful if the drowsiness affects you as it may impair your ability on tasks such as driving.
- Smoking may make Circadin less effective, because the components of tobacco smoke can increase the breakdown of melatonin by the liver.
Side Effects
Like all medicines, this medicine can cause side effects, although not everybody gets them.
If you experience any of the following serious side effects, stop taking the medicine and contact your doctor immediately:-
Uncommon: (may affect up to 1 in 100 people)
Rare: (may affect up to 1 in 1000 people)
- Loss of consciousness or fainting
- Severe chest pain due to angina
- Feeling your heartbeat
- Depression
- Visual impairment
- Blurred vision
- Disorientation
- Vertigo (a feeling of dizziness or “spinning”)
- Presence of red blood cells in the urine
- Reduced number of white blood cells in the blood
- Reduced blood platelets, which increases risk of bleeding or bruising
- psoriasis
See patient information leaflet for a full list of side effects.
Ingredients
The active substance is melatonin. Each prolonged-release tablet contains 2 mg melatonin.
The other ingredients are ammonio methacrylate copolymer type B, calcium hydrogen phosphate dihydrate, lactose monohydrate, silica (colloidal anhydrous), talc and magnesium stearate.
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