INDICATIONS     CONTRA-INDICATIONS     DOSAGE     SIDE-EFFECTS     PREGNANCY     OVERDOSE     IDENTIFICATION     PATIENT INFORMATION

Logo RELITONE (Film coated tablet)

SCHEDULING STATUS:
S3

PROPRIETARY NAME
(and dosage form):

RELITONE (Film coated tablet)

COMPOSITION:
Each tablet contains 500 mg of 4-(6-methoxy-2-naphthyl) butan-2-one (
nabumetone).

PHARMACOLOGICAL CLASSIFICATION:
A.3.1 Anti-rheumatics (anti-inflammatory agents)

PHARMACOLOGICAL ACTION:
RELITONE is a member of a naphthalene series of synthetic compounds. RELITONE has anti-inflammatory, analgesic and anti-pyretic properties but inhibits prostaglandin synthetase poorly and has no uricosuric activity. After oral administration unaltered RELITONE is only rarely detected in the serum as it is extensively metabolised to mainly 6-methoxy-2-naphthyl acetic acid, a more potent inhibitor of prostaglandin synthetase responsible for RELITONE's pharmacological activity. Steady state serum levels of 6-methoxy-2-naphthyl acetic acid are reached in 3 to 4 days with a serum half life of 20 to 23 hours.
The absorption of RELITONE, is not impaired by food, but may be increased by taking it with milk. The main metabolite is distributed to all tissues, excreted in milk, but shows no evidence of accumulation. The main method of excretion is via the urinary tract as a glucuronide conjugate of the metabolites.

INDICATIONS:
RELITONE is indicated for the symptomatic treatment of:
Rheumatoid arthritis
Osteo-arthritis/Osteo-arthrosis

CONTRA-INDICATIONS:
Pregnancy and lactation.
Active or recent history of peptic ulceration. History of analgesic induced asthma.
Use in children under the age of 12 years.
Hypersensitivity reactions to RELITONE or other nonsteroidal anti-inflammatory drugs.

WARNINGS:
There has been no experience of use in patients with impaired renal function. RELITONE should not be used in renal failure.
Keep out of reach of children.

DOSAGE AND DIRECTIONS FOR USE:
Adults:
The recommended daily dosage is 2 tablets (1 g) taken as a single night time dose.
The Elderly:
Blood levels are higher in elderly patients. In many cases 500 mg may give satisfactory relief.
The total daily dose should not exceed 1 g.

SIDE-EFFECTS AND SPECIAL PRECAUTIONS:
The most commonly reported side-effects are gastro-intestinal symptoms including indigestion, nausea, dyspepsia, abdominal pain, flatulence and diarrhoea. Central nervous symptoms such as headache, dizziness and drowsiness have been reported.
Skin rashes, pruritus, fluid retention and jaundice have also been reported.
Hypersensitivity reactions such as bronchospasm and anaphylactoid reactions may occur.
RELITONE should be used with caution in patients with severe hepatic impairment.
RELITONE is highly bound to plasma proteins and patients receiving simultaneous anti-diabetic sulphonylureas, other highly bound sulphonamides and hydantoins, should be carefully observed for signs of overdosage to these drugs. Although RELITONE will displace warfarin from its serum protein binding sites in vitro this has little or no effect in vivo, but patients should be monitored for idiosyncratic reactions.

KNOWN SYMPTOMS OF OVERDOSAGE AND PARTICULARS OF ITS TREATMENT:
There are no specific known symptoms of overdosage. There is no specific antidote. Treatment is by gastric lavage and appropriate supportive therapy.

IDENTIFICATION:
RELITONE: White, film coated pillow shaped tablets.

PRESENTATION:
High density polyethylene bottles containing 60 tablets or blister packaging in strips of 10 tablets.

STORAGE INSTRUCTIONS:
Store in a cool dry place (below 25°C) and protect from light.
KEEP OUT OF REACH OF CHILDREN.

REGISTRATION NUMBER:
27/3.1/0105

NAME AND BUSINESS ADDRESS OF THE APPLICANT:
Garec Limited registered user
43 Richards Drive
Halfway House
1685

DATE OF PUBLICATION OF THIS PACKAGE INSERT:
24 September 1992.

                        P1672

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