Search Results for "phenytoin"
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Searched for phenytoin. Results 11 to 20 of 25 total matches.
See also: Dilantin

Osilodrostat (Isturisa) for Cushing's Disease

   
The Medical Letter on Drugs and Therapeutics • Feb 08, 2021  (Issue 1617)
metabolized by these isozymes (e.g., theophylline, phenytoin). Use of osilodrostat with other drugs ...
The FDA has approved osilodrostat (Isturisa – Recordati), a cortisol synthesis inhibitor, for oral treatment of adults with Cushing's disease when surgical resection of the pituitary adenoma is not an option or has not been curative. Osilodrostat is the first cortisol synthesis inhibitor to be approved in the US for this indication. Other oral steroidogenesis inhibitors such as ketoconazole and metyrapone have been used off-label for this indication for many years.
Med Lett Drugs Ther. 2021 Feb 8;63(1617):21-3 |  Show IntroductionHide Introduction

Azstarys (Serdexmethylphenidate/Dexmethylphenidate) for ADHD

   
The Medical Letter on Drugs and Therapeutics • Oct 04, 2021  (Issue 1634)
., phenytoin) and antidepressants (e.g., selective serotonin reuptake inhibitors). DOSAGE AND ADMINISTRATION ...
The FDA has approved a long-acting fixed-dose combination of the stimulant dexmethylphenidate and the prodrug serdexmethylphenidate (Azstarys – Corium) for once-daily treatment of attention-deficit/hyperactivity disorder (ADHD) in patients ≥6 years old. Azstarys is the first product containing serdexmethylphenidate to become available in the US.
Med Lett Drugs Ther. 2021 Oct 4;63(1634):157-9 |  Show IntroductionHide Introduction

Cabotegravir (Apretude) for HIV-1 Pre-Exposure Prophylaxis

   
The Medical Letter on Drugs and Therapeutics • Feb 21, 2022  (Issue 1644)
, such as carbamazepine, phenytoin, and rifampin, with cabotegravir is contraindicated. Rifabutin can decrease serum ...
The FDA has approved Apretude (ViiV Healthcare), an IM extended-release (ER) formulation of the integrase strand transfer inhibitor (INSTI) cabotegravir, for use every 2 months to prevent sexually acquired HIV-1 infection in at-risk adolescents and adults. Apretude is the first ER formulation to be FDA-approved for pre-exposure prophylaxis (PrEP) of HIV-1 infection.
Med Lett Drugs Ther. 2022 Feb 21;64(1644):29-31 |  Show IntroductionHide Introduction

Deuruxolitinib (Leqselvi) for Severe Alopecia Areata

   
The Medical Letter on Drugs and Therapeutics • Oct 27, 2025  (Issue 1740)
of deuruxolitinib with drugs that strongly induce CYP3A and moderately or strongly induce CYP2C9 (e.g., phenytoin ...
The FDA has approved the oral Janus kinase (JAK) inhibitor deuruxolitinib (Leqselvi – Sun) for treatment of severe alopecia areata in adults. Two other oral JAK inhibitors are approved for treatment of severe alopecia areata: baricitinib (Olumiant) is approved for use in adults, and ritlecitinib (Litfulo) is approved for use in patients ≥12 years old.
Med Lett Drugs Ther. 2025 Oct 27;67(1740):174-6   doi:10.58347/tml.2025.1740b |  Show IntroductionHide Introduction

Stiripentol (Diacomit) for Dravet Syndrome (online only)

   
The Medical Letter on Drugs and Therapeutics • Mar 24, 2021  (Issue 1620)
. Concomitant administration with potent inducers of these enzymes such as phenytoin and carbamazepine can ...
The FDA has approved stiripentol (Diacomit – Biocodex) for treatment of seizures in patients ≥2 years old with Dravet syndrome who are also taking clobazam (Onfi). Stiripentol, which has been available in Europe, Canada, and Japan for many years, is the second drug to be approved in the US for this indication; cannabidiol oral solution (Epidiolex), a purified marijuana product, was the first.
Med Lett Drugs Ther. 2021 Mar 24;63(1620):e1-3 |  Show IntroductionHide Introduction

Bexagliflozin (Brenzavvy) — A Fifth SGLT2 Inhibitor for Type 2 Diabetes

   
The Medical Letter on Drugs and Therapeutics • Aug 21, 2023  (Issue 1683)
, phenobarbital, ritonavir, or phenytoin can de crease serum concentrations of bexagliflozin and its efficacy ...
Bexagliflozin (Brenzavvy – TheracosBio), a sodium-glucose cotransporter 2 (SGLT2) inhibitor, has been approved by the FDA to improve glycemic control in adults with type 2 diabetes. It is the fifth SGLT2 inhibitor to be approved in the US for this indication (see Table 4).
Med Lett Drugs Ther. 2023 Aug 21;65(1683):130-2   doi:10.58347/tml.2023.1683b |  Show IntroductionHide Introduction

Drugs for Treatment and Prevention of Venous Thromboembolism

   
The Medical Letter on Drugs and Therapeutics • Jul 25, 2022  (Issue 1655)
, phenytoin (initial use), rosuvastatin, trimethoprim-sulfamethoxazole, and voriconazole can increase ...
Anticoagulants are the drugs of choice for treatment and prevention of deep venous thrombosis (DVT) and pulmonary embolism (PE), collectively referred to as venous thromboembolism (VTE). US guidelines for treatment of VTE were updated in 2020 and 2021.
Med Lett Drugs Ther. 2022 Jul 25;64(1655):113-20 |  Show IntroductionHide Introduction

Drugs for Hypothyroidism

   
The Medical Letter on Drugs and Therapeutics • Feb 20, 2023  (Issue 1670)
Phenobarbital Decreased LT4 effect Increased metabolism Monitor thyroid function Phenytoin Decreased measured ...
Primary hypothyroidism is usually the result of Hashimoto's (autoimmune) thyroiditis, thyroidectomy, or radioactive iodine therapy. Treatment of hypothyroidism with replacement doses of thyroid hormone is usually lifelong. Levothyroxine (LT4; synthetic thyroxine; Synthroid, and others) is the drug of choice.1
Med Lett Drugs Ther. 2023 Feb 20;65(1670):25-9   doi:10.58347/tml.2023.1670a |  Show IntroductionHide Introduction

Drugs for Alcohol Use Disorder

   
The Medical Letter on Drugs and Therapeutics • Dec 13, 2021  (Issue 1639)
the anticoagulant effect of warfarin and raise serum concentrations of phenytoin. OFF-LABEL ALTERNATIVES ...
Consumption of alcohol has increased during the COVID-19 pandemic. The Diagnostic and Statistical Manual for Mental Disorders, 5th edition (DSM-5) defines alcohol use disorder (AUD; previously called alcohol dependence) as meeting ≥2 of the 11 criteria listed in Table 1 in the past year. The lifetime prevalence of AUD in the US population has been estimated to be about 30%. Despite this high prevalence and the associated morbidity, mortality, and costs, only 3 drugs are FDA-approved for treatment of the disorder.
Med Lett Drugs Ther. 2021 Dec 13;63(1639):193-8 |  Show IntroductionHide Introduction

Drugs for Hepatitis C Virus Infection

   
The Medical Letter on Drugs and Therapeutics • Oct 28, 2024  (Issue 1714)
/CYP3A inducers (e.g., carbamazepine, phenytoin), darunavir, lopinavir, ritonavir, efavirenz ...
About 2.5 million persons in the US had hepatitis C between 2017 and 2020. Guidelines from the American Association for the Study of Liver Diseases (AASLD) and the Infectious Diseases Society of America (IDSA) on management of hepatitis C virus (HCV) infection were updated in 2023.
Med Lett Drugs Ther. 2024 Oct 28;66(1714):169-74   doi:10.58347/tml.2024.1714a |  Show IntroductionHide Introduction