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Kenalog-40 and Mestinon (Pyridostigmine Extended-Release Tablets)

Determining the interaction of Kenalog-40 and Mestinon (Pyridostigmine Extended-Release Tablets) and the possibility of their joint administration.

Check result:
Kenalog-40 <> Mestinon (Pyridostigmine Extended-Release Tablets)
Relevance: 08.01.2023 Reviewer: Shkutko P.M., M.D., in

In the database of official manuals used in the service creation an interaction registered by statistical results of studies was found, which can either lead to negative consequences for the patient health or strengthen a mutual positive effect. A doctor should be consulted to address the issue of joint drug administration.

Consumer:

Triamcinolone may reduce the effects of pyridostigmine in the treatment of myasthenia gravis, at least temporarily. If you have been receiving treatment with pyridostigmine, you may experience increased muscle weakness when triamcinolone is first initiated. Improvement in muscular function may occur gradually. Talk to your doctor if you have any questions or concerns. You may need a dose adjustment or more frequent monitoring by your doctor to safely use both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.

Professional:

ADJUST DOSE: Corticosteroids and adrenocorticotropic agents may diminish the therapeutic effects of acetylcholinesterase inhibitors in myasthenia gravis. The mechanism of interaction is unknown. Marked deterioration in muscle strength has been reported in patients with myasthenia gravis shortly after the initiation of corticosteroid therapy, particularly when high dosages were used. In most cases, the decline in muscular function was relatively refractory to acetylcholinesterase inhibitors. However, clinical improvement generally occurs during prolonged corticosteroid therapy when administered properly.

MANAGEMENT: Corticosteroid therapy should be instituted at relatively low dosages (15 to 25 mg/day of prednisone or equivalent) and in a controlled setting in patients with myasthenia gravis. Respiratory support should be available, and the dosage should be increased stepwise as tolerated (approximately 5 mg/day of prednisone or equivalent at 2- to 3-day intervals until marked clinical improvement or a dosage of 50 mg/day is reached). Dose reductions of the acetylcholinesterase inhibitor may be required as symptoms improve, which often may be delayed and gradual.

References
  • Patten BM, Oliver KL, Engel WK "Adverse interaction between steroid hormones and anticholinesterase drugs." Neurology 24 (1974): 442-9
  • Brunner NG, Namba T, Grob D "Corticosteroids in management of severe, generalized myasthenia gravis." Neurology 22 (1972): 603-10
  • Namba T "Corticotropin therapy in patients with myasthenia gravis." Arch Neurol 26 (1972): 144-50
  • Fauci AS, Braunwald E, Isselbacher KJ, Wilson JD, Martin JB, Kasper DL, Hauser SL, Longo DL, eds. "Harrison's Principles of Internal Medicine. 14th ed." New York, NY: McGraw-Hill Health Professionals Division (1998):
  • Millikan CH, Eaton LM "Clinical evaluation of ACTH and cortisone in myasthenia gravis." Neurology 1 (1951): 145-52
Kenalog-40

Generic Name: triamcinolone

Brand name: Kenalog-40, Zilretta, Aristocort, Azmacort

Synonyms: Kenalog-40 (injection)

Mestinon (Pyridostigmine Extended-Release Tablets)

Generic Name: pyridostigmine

Brand name: Mestinon, Mestinon Timespan, Regonol

Synonyms: Mestinon

In the course of checking the drug compatibility and interactions, data from the following reference sources was used: Drugs.com, Rxlist.com, Webmd.com, Medscape.com.