The FDA has approved a higher-dose intranasal naloxone formulation (Kloxxado – Hikma) for emergency treatment of opioid overdose. A single spray of the new formulation delivers 8 mg of naloxone; a formulation that delivers 4 mg per spray (Narcan) was approved in 2015.

The FDA has approved an extended-release tablet formulation of amantadine (Osmolex ER – Vertical/Osmotica) for once-daily treatment of Parkinson's disease (PD) and drug-induced extrapyramidal symptoms (EPS) in adults. An extended-release capsule formulation of amantadine (Gocovri) was approved in 2017 for treatment of levodopa-induced dyskinesia in patients with PD.

Trofinetide (Daybue – Acadia), a synthetic analog of glycine-proline-glutamate, has been approved by the FDA for treatment of Rett syndrome in patients ≥2 years old. It is the first drug to be approved in the US for treatment of Rett syndrome.

Every pharmaceutical drug is a dose-dependent poison. This article describes the clinical presentation and treatment of some dangerous overdoses commonly reported in adults.

View the Expanded Table: Drugs for Prophylaxis of Malaria

When used for the appropriate seizure type, antiseizure medications (ASMs) are roughly equivalent in efficacy. In addition to the seizure type, the choice of drug is usually based on factors such as ease of use, spectrum of activity, adverse effects, interactions with other drugs, presence of comorbid conditions, suitability for elderly persons and those with childbearing potential, and cost. Treatment should begin with a single drug, increasing the dosage gradually until seizures are controlled or adverse effects become unacceptable. If seizures persist, expert clinicians generally...

The FDA has approved recombinant interferon alfa-2a conjugated to polyethylene glycol (Pegasys - Roche) alone or with oral ribavirin (Copegus - Roche) for treatment of adults with chronic hepatitis C virus (HCV) infections not previously treated with interferon alpha. The standard of care for treatment of most patients with hepatitis C has been once-weekly injections of peginterferon alfa-2b (PEG-Intron -Schering) plus oral ribavirin (Rebetol - Schering) (Medical Letter 2001; 43:54).

Vilazodone (Viibryd – Forest), a selective serotonin reuptake inhibitor (SSRI) and partial 5-HT_1A receptor agonist, has been approved by the FDA for treatment of depression. It has been claimed to have no sexual side effects and not to cause weight gain.

The FDA has approved ceftazidime/avibactam (Avycaz – Actavis) for IV treatment of complicated urinary tract and intra-abdominal infections in adults who have limited or no other treatment options. Ceftolozane/tazobactam (Zerbaxa – Cubist), another cephalosporin/beta-lactamase inhibitor combination, was approved in 2014.

Brivaracetam (Briviact – UCB), an analog of levetiracetam (Keppra, and others), has been approved by the FDA for adjunctive treatment of partial-onset seizures in patients ≥16 years old. New drugs for epilepsy are often approved initially only as adjunctive treatment for partial seizures.