Therapeutic Group: NSAIDs
Novas® 500 mg
Tablet: Each enteric-coated tablet contains Naproxen BP 500 mg.
Novas®
(Naproxen) is a nonsteroidal anti-inflammatory drug (NSAID) with analgesic,
anti-inflammatory and antipyretic properties.
Naproxen is a
propionic acid derivative related to the arylacetic acid class of drugs. It
inhibits synthesis of prostaglandins.
Novas® is
indicated for the treatment of rheumatoid arthritis, osteoarthritis, ankylosing
spondylitis and juvenile rheumatoid arthritis. Novas® is also indicated for the
treatment of tendonitis, bursitis, acute gout, for the management of pain,
primary dysmenorrhea, migraine treatment and prophylaxis.
Onset of pain
relief can begin within 1 hour in patients taking Novas®. After assessing the
risk/benefit ratio in each individual patient, the lowest effective dose for
the shortest possible duration should be used.
Novas® Tablet: For oral use.
Dose in Adults: Chronic conditions: Osteoarthritis/Rheumatoid arthritis/Ankylosing spondylitis/chronic pain states in which there is an inflammatory component: The recommended dose of Novas® is 250 mg or 500 mg taken twice daily (morning and evening).
Acute
conditions: Analgesia/Dysmenorrhea/Acute musculoskeletal conditions/Acute pain
states in which there is an inflammatory component. The recommended starting
dose is Novas® 500 mg followed by Naproxen 250 mg every 6-8 hours or as
required. The total daily dose should not exceed 1250 mg.
Acute gout:
The recommended starting dose is of 750 mg followed by Naproxen 250 mg every
6-8 hours until the attack has subsided. The total daily dose should not exceed
1250 mg.
Migraine: 750 mg at the first
symptom of an impending attack. An additional dose of Naproxen 250 mg to 500 mg
can be taken throughout the day, if necessary, but not before half an hour
after the initial dose. For prophylaxis of migraine headache, the dose of
Novas® is 500 mg twice daily. If no improvement is seen within 4-6 weeks, the
drug should be discontinued.
Common: Gastrointestinal:
abdominal pain, heartburn, constipation, diarrhoea, dyspepsia, heartburn,
nausea, stomatitis. Central nervous system: dizziness, drowsiness, headache,
lightheadedness, vertigo. Dermatologic: ecchymosis, itching (pruritus), purpura,
skin eruptions, sweating. Special senses: hearing disturbances, tinnitus,
visual disturbances. Cardiovascular: dyspnea, edema, palpitations. Renal:
glomerular nephritis, haematuria, interstitial nephritis, hyperkalaemia.
Rare: Hematologic:
agranulocytosis, hemolytic anemia. Central & peripheral nervous system:
cognitive dysfunction, convulsions. Dermatological: urticarial. General:
angioneurotic edema, hyperglycemia, hypoglycemia. Reproductive: female
infertility. General: thirst.
Gastrointestinal ulceration,
bleeding and perforation: Gastrointestinal mucosal injury may occur. Serious
gastrointestinal toxicity, such as gastrointestinal irritation, bleeding,
ulceration and perforation can occur at any time, with or without warning symptoms,
in patients treated with NSAIDs including Naproxen therapy. In patients with a
history of gastrointestinal disease, Naproxen should be given under close
supervision.
Renal effects: There have been
reports of impaired renal function, renal failure, acute interstitial
nephritis, hematuria, proteinuria, renal papillary necrosis and occasionally
nephrotic syndrome associated with Naproxen.
Hematological: Naproxen decreases
platelet aggregation and prolongs bleeding time. This effect should be kept in
mind when bleeding times are determined.
Hepatic effects: Hepatic
abnormalities may be the result of hypersensitivity rather than direct
toxicity. Severe hepatic reactions, including jaundice and hepatitis (some
cases of hepatitis have been fatal) have been reported with it.
Precautions to elderly patients:
Use of the lower end of the dosage range is recommended.
Combination with other NSAIDs:
The combination of other NSAIDs is not recommended, because of the cumulative
risks of inducing serious NSAID-related adverse events.
With Medicine: Concomitant
administration of antacid or cholestyramine can delay the absorption of
Naproxen, but does not affect its extent. Naproxen is highly bound to plasma
albumin; Patients simultaneously receiving the drug and a Hydantoin, Sulphonamide
or Sulphonylurea should be observed for adjustment of dose if required. Caution
is advised when Methotrexate is administered concurrently, since Naproxen and
other prostaglandin synthesis-inhibiting drugs have been reported to reduce the
clearance of Methotrexate and thus possibly enhance its toxicity. Naproxen can
reduce the anti-hypertensive effect of beta-blockers. Concomitant use of NSAIDs
with ACE inhibitors or angiotensin receptor blockers may increase the risk of
renal dysfunction, especially in patients with pre-existing poor renal
function. Naproxen may inhibit the natriuretic effect of Frusemide. Inhibition
of renal Lithium clearance leading to increases in plasma Lithium
concentrations has been reported. Naproxen decreases platelet aggregation and
prolongs bleeding time. This effect should be kept in mind when bleeding times
are determined.
With Food and Others: Concomitant
administration of food can delay the absorption of Naproxen, but does not
affect its extent. After administration of Naproxen tablets peak plasma levels
are attained 2-4 hours, depending on the food intake.
Significant overdose of the
medicine may be characterised by dizziness, drowsiness, epigastric pain,
abdominal discomfort, indigestion, transient alterations in liver function,
hypoprothrombinaemia, renal dysfunction, metabolic acidosis, apnoea, disorientation,
nausea or vomiting. Gastrointestinal bleeding may occur. Hypertension, acute
renal failure, respiratory depression and coma may occur after the ingestion of
NSAIDs, and may occur following an overdose.
Patients should be managed by
symptomatic and supportive care following NSAIDs overdose. There are no
specific antidotes. Prevention of further absorption (e.g. activated charcoal)
may be indicated in patients seen within 4 hours of ingestion with symptoms or
following a large overdose. Forced diuresis, alkalinisation of urine,
hemodialysis, or hemoperfusion may not be useful due to high protein binding.
Due to the sustained-release characteristic of Naproxen SR tablets, it should
be expected that Naproxen will continue to be absorbed for up to 16 hours after
ingestion.
Store at temperature not
exceeding 30o C in a dry place. Protect from light.
Novas® 500 mg Tablet: Each box
contains 3X10’s tablets in Alu-Alu blister strips.