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Pronunciation |
|
(dye
KLOE fen ak & mye soe PROST
ole) |

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U.S. Brand
Names |
|
Arthrotec® |

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Generic
Available |
|
No |

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|
Synonyms |
|
Misoprostol and Diclofenac |

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|
Pharmacological Index |
|
Nonsteroidal Anti-Inflammatory Agent (NSAID); Prostaglandin |

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|
Use |
|
The diclofenac component is indicated for the treatment of osteoarthritis and
rheumatoid arthritis; the misoprostol component is indicated for the prophylaxis
of NSAID-induced gastric and duodenal ulceration |

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|
Pregnancy Risk
Factor |
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X |

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Contraindications |
|
Pregnancy; patients who have demonstrated hypersensitivity to diclofenac,
aspirin, other NSAIDs, misoprostol, other prostaglandins, or any component of
the drug product |

|
|
Warnings/Precautions |
|
Use in premenopausal women; should not be used in premenopausal women unless
they use effective contraception and have been advised of the risks of taking
the product if pregnant |

|
|
Adverse
Reactions |
|
>10%: Gastrointestinal: Abdominal pain (21%), diarrhea (19%), nausea
(11%), dyspepsia (14%)
1% to 10%:
Endocrine & metabolic: Elevated transaminase levels
Gastrointestinal: Flatulence (9%)
Hematologic: Anemia
Miscellaneous: Anaphylactic reactions |

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|
Drug
Interactions |
|
Increased effect/toxicity: Aspirin (shared toxicity), digoxin (elevated
digoxin levels), warfarin (synergistic bleeding potential), methotrexate
(increased methotrexate levels), cyclosporine (increased nephrotoxicity),
lithium (increased lithium levels)
Decreased effects: Aspirin (displaces diclofenac from binding sites),
antihypertensive agents (decreased blood pressure control), antacids (may
decrease absorption) |

|
|
Mechanism of
Action |
|
See individual agents |

|
|
Pharmacodynamics/Kinetics |
|
The pharmacokinetic profiles of diclofenac and misoprostol administered as a
combination product is similar to the profiles when the two drugs are
administered as separate tablets. No pharmacokinetic interaction between the two
drugs has been observed following multiple doses. |

|
|
Usual Dosage |
|
Adults: Oral:
Osteoarthritis: 1 tablet 2-3 times/day
Rheumatoid arthritis: 1 tablet 3-4 times/day
For both regimens, if not tolerated by patient, the dose may be reduced to 1
tablet twice daily
Arthrotec® 75:
Patients who cannot tolerate full daily Arthrotec® 50
regimens: 1 tablet twice daily
Note: The use of these tablets may not be as effective at preventing
GI ulceration |

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|
Mental Health: Effects
on Mental Status |
|
May cause nervousness or dizziness; may rarely cause
depression |

|
|
Mental Health:
Effects on Psychiatric
Treatment |
|
May rarely cause agranulocytosis; use caution with clozapine and
carbamazepine; may decrease the clearance of lithium resulting in elevated serum
levels and potential toxicity; monitor serum lithium levels |

|
|
Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
|
No information available to require special precautions |

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|
Dental Health:
Effects on Dental Treatment |
|
No effects or complications reported |

|
|
Patient
Information |
|
See individual agents. Pregnancy/breast-feeding precautions: Inform
prescriber if you are pregnant. Do not get pregnant during or for 1 month
following therapy. Male: Do not cause a female to become pregnant. Male/female:
Consult prescriber for instruction on appropriate contraceptive measures. This
drug may cause severe fetal defects. Do not breast-feed. |

|
|
Dosage Forms |
|
Tablet: Diclofenac 50 mg and misoprostol 200 mcg; diclofenac 75 mg and
misoprostol 200 mcg |

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