Codeine Phosphate Tablets 15 Mg
SUMMARY OF PRODUCT CHARACTERISTICS
1 NAME OF THE MEDICINAL PRODUCT
Codeine phosphate 15 mg tablets
2 QUALITATIVE AND QUANTITATIVE COMPOSITION
Each tablet contains 15 mg of codeine phosphate.
Excipient:
Each tablet contains 28.85 mg of lactose.
For a full list of excipients, see section 6.1.
3 PHARMACEUTICAL FORM
Tablet
White circular normal biconvex tablets, embossed with R114.
4 CLINICAL PARTICULARS
4.1 Therapeutic indications
Recommended Uses: As an analgesic, an anti-tussive, and for the symptomatic treatment of chronic diarrhoea.
4.2 Posology and method of administration
For oral administration.
As an analgesic:
Adults: 30-60mg every four hours, when necessary to a maximum 240mg daily. Children: Not applicable.
As an anti-tussive:
Adults: 15-3 0mg three or four times daily.
Not recommended for children.
For the symptomatic treatment of chronic diarrhoea.:
Adults: 10-60mg every four to six hours. Children: Not applicable.
In general dosage should be reduced in elderly patients.
4.3
Contraindications
• hypersensitivity to codeine phosphate, other opioid analgesics or any other of the excipients
• patients with respiratory depression, liver disease, raised intracranial pressure, head injuries, acute alcoholism and diarrhoea associated with either pseudomembranous colitis or poisoning.
4.4 Special warnings and precautions for use
Prolonged use of high doses has produced drug dependence of the Morphine type. Codeine should be used with caution in patients with a history of drug dependence, in asthmatics and in patients with renal impairment. Care should be taken if the patient has hypotension, hypothyroidism, adrenocortical insufficiency, prostatic hypertrophy, acute abdominal conditions, recent GI surgery, gallstones, myasthenia gravis, history of cardiac arrhythmias or convulsions.
The risk-benefit of continued use should be assessed regularly by the prescriber.
Codeine Phosphate Tablets contain lactose. Patients with rare hereditary problems of galactose intolerance, the Lapp lactase deficiency or glucose-galactose malabsorption should not take this medicinal product.
The leaflet will state in a prominent position in the “before taking” section:
Do not take for longer than directed by your prescriber.
Taking codeine regularly for a long time can lead to addiction, which might cause you to feel restless and irritable when you stop the tablets.
Taking a painkiller for headaches too often or for too long can make them worse.
The label will state (To be displayed prominently on outer pack - not boxed):
Do not take for longer than directed by your prescriber as taking codeine regularly for a long time can lead to addiction.
Codeine is partially metabolised by CYP2D6. If a patient has a deficiency or is completely lacking this enzyme they will not obtain adequate analgesic effects. Estimates indicate that up to 7% of the caucasian population may have this deficiency. However, if the patient is an ultra-rapid metaboliser there is an increased risk of developing side effects of opioid toxicity even at low doses. General symptoms of opioid toxicity include nausea, vomiting, constipation, lack of appetite and somnolence. In severe cases this may include symptoms of circulatory and respiratory depression. Estimates indicate that up to 1 to 2% of the Caucasian population may be ultra-rapid metabolisers.
The leaflet will state in the “Pregnancy and breast-feeding” subsection of section 2 “Before taking your medicine”:
Usually it is safe to take “brand name” while breast feeding as the level of the active ingredients of this medicine in breast milk are too low to cause your baby any problems. However, some women who are at increased risk of developing side effects at any dose may have higher levels in their breast milk. If any of the following side effects develop in you or your baby stop taking this medicine and seek immediate medical advice; feeling sick, vomiting, constipation, decreased or lack of appetite, feeling tired or sleeping for longer than normal, and shallow or slow breathing.
4.5 Interaction with other medicinal products and other forms of interaction
Forms codeine-phenobarbital complex with phenobarbital sodium and crystals of codeine periodide with potassium iodide. Codeine is known to interact with other CNS depressants (e.g. alcohol, sedatives, hypnotics), other antidiarrhoeal agents, neuromuscular blocking agents, antihypertensives, cimetidine and monoamine oxidase inhibitors (also within two weeks of stopping treatment with MAOI). Codeine also interferes with some laboratory tests e.g. plasma amylase, lipase, bilirubin.
4.6 Fertility, pregnancy and lactation
Not recommended during pregnancy due to neonatal withdrawal symptoms and impaired effect of foetus.
At normal therapeutic doses codeine and its active metabolites may be present in breast milk at very low doses and is unlikely to adversely affect the breast fed infant.
However, if the patient is an ultra-rapid metaboliser of CYP2D6, higher levels of the active metabolites may be present in breast milk and on very rare occasions may result in symptoms of opioid toxicity in the infant.
If symptoms of opioid toxicity develop in either the mother or the infant, then all codeine containing medicines should be stopped and alternative non-opioid analgesics prescribed. In severe cases consideration should be given to prescribing naloxone to reverse these effects.
4.7 Effects on ability to drive and use machines
In combination with alcohol, it has a deleterious effect on driving.
4.8 Undesirable effects
Tolerance and dependence, sedation, dizziness, nausea and constipation commonly occurs. May enhance the effect of alcohol. Other undesirable effects are sweating, facial flushing, dry mouth, blurred or double vision, hypotension, malaise, headache, anorexia, bradycardia, allergic reactions (itch, skin rash, facial oedema) and difficulty in micturition. Rare side effects are convulsions, hallucinations, nightmare, uncontrolled muscle movements and rigidity, mental depression and stomach cramps.
Regular prolonged use of codeine is known to lead to addiction and tolerance. Symptoms of restlessness and irritability may result when treatment is then stopped.
Prolonged use of a painkiller for headaches can make them worse.
4.9 Overdose
The effects in overdosage will be potentiated by simultaneous ingestion of alcohol and psychotropic drugs.
Symptoms
Central nervous system depression, including respiratory depression, may develop but is unlikely to be severe unless other sedative agents have been co-ingested, including alcohol, or the overdose is very large. The pupils may be pin-point in size; nausea and vomiting are common. Hypotension and tachycardia are possible but unlikely.
Management should include general symptomatic and supportive measures including a clear airway and monitoring of vital signs until stable. Consider activated charcoal if an adult presents within one hour of ingestion of more than 350mg or a child more than 5mg/kg.
Give naloxone if coma or respiratory depression is present. Naloxone is a competitive antagonist and has a short half-life so large and repeated doses may be required in a seriously poisoned patient. Observe for at least 4 hours after ingestion, or 8 hours if a sustained release preparation has been taken.
5 PHARMACOLOGICAL PROPERTIES
5.1 Pharmacodynamic properties
Pharmacotherapeutic group: Opium alkaloids and derivatives, codeine ATC code: R05DA04
The action of codeine is largely that of Morphine from which it is derived i.e. it is a CNS suppressant.
5.2 Pharmacokinetic properties
Codeine is metabolised in the liver and is excreted in the urine, largely in inactive forms. A small fraction (approximately 10%) of administered Codeine is demethylated to form Morphine; traces of free morphine can be found in the urine after therapeutic doses of codeine.
5.3 Preclinical safety data
Animal work suggested that the analgesic activity of Codeine was not affected by Acetylation.
6 PHARMACEUTICAL PARTICULARS
6.1 List of excipients
Lactose
Starch
Magnesium Stearate Sodium Starch Glycolate
6.2 Incompatibilities
None stated.
6.3 Shelf life
3 years: Polypropylene tamper-evident containers.
2 years: Blister strips.
6.4 Special precautions for storage
Store below 25°C.
6.5 Nature and contents of container
Polypropylene tamper-evident containers: 1000, 500, 100, 90, 80, 70, 60, 50, 40, 30, 20 and 10 tablets
Blister strips: 100, 90, 80, 70, 60, 50, 40, 30, 20 and 10 tablets.
Not all pack types or sizes may be marketed.
6.6 Special precautions for disposal
No special requirements.
7 MARKETING AUTHORISATION HOLDER
Consilient Health Ltd.,
5th Floor, Beaux Lane House,
Mercer Street Lower, Dublin 2, Ireland
8 MARKETING AUTHORISATION NUMBER(S)
PL 24837/0023
9 DATE OF FIRST AUTHORISATION/RENEWAL OF THE AUTHORISATION
27/09/2011
10 DATE OF REVISION OF THE TEXT
27/09/2011