Circadin is used to improve sleep quality and morning alertness in patients with poor quality of sleep. The active substance of Circadin is melatonin which belongs to a group of naturally occurring hormones produced in the body.
Melatonin works by controlling the circadian rhythms and increasing the readiness to sleep.
Melatonin is sometimes used at higher doses for restless legs syndrome and fibromyalgia during menopause.

How to use Circadin

Swallow the tablet whole with a full glass of water, 1-2 hours before bed. Do not chew or suck it.

Risks of using HRT

Circadin is very safe. There is a small risk of drowsiness which may be important if using heavy machinery.

Some medicines and Circadin may interfere with each other. These include hypnotics and tranquilisers (e.g. benzodiazepine); fluvoxamine, thioridazine and imipramine (used to treat depression or psychiatric problems); cimetidine and psoralens (used to treat skin problems e.g. psoriasis); alcohol; caffeine.

This does not mean you cannot take Circadin but that its effectiveness or that of the other medication may be altered

Reasons not to start Circadin

Allergies to Circadin
Current high alcohol use
You are pregnant or breast feeding

Speak with your doctor about any risks because you have…

Kidney or liver disease

Autoimmune disease

Have a rare hereditary problem of galactose intolerance, the LAPP lactase deficiency or glucose-galactose malabsorption

Side effects of Circadin

Side effects are very uncommon and you may not experience any. They occur in less than 1 in 100 people.

Irritability, restlessness, insomnia, abnormal dreams, migraine, dizziness, tiredness, headache.

Stop taking Circadin and seek medical advice if…

Excessive drowsiness

* go to emergency as these need immediate assessment.


For more information view official product information or contact us:
What’s in the box?


Each tablet contains 2 mg melatonin plus inactive ingredients.

Each box contains 30 tablets for 1 month’s supply.