Epinastine HCl, an H₁-receptor antagonist and mast cell stabilizer, has been approved by the FDA for use in a 0.05% ophthalmic solution (Elestat - Allergan/Inspire) for prevention of itching associated with allergic conjunctivitis. The drug is available orally in Europe and Asia.

Difelikefalin (Korsuva – Vifor), an IV kappa opioid receptor (KOR) agonist, has been approved by the FDA for treatment of moderate to severe pruritus associated with chronic kidney disease (CKD) in adults on hemodialysis. It is the first drug to be approved for this indication and the first KOR agonist to become available in the US. Difelikefalin has not been studied in patients on peritoneal dialysis.

The FDA is requiring stronger warnings in the labeling of the leukotriene receptor antagonist montelukast (Singulair, and generics) about the risk of suicidal behavior and other serious neuropsychiatric events associated with its use.

Levocetirizine (Xyzal - UCB/Sanofi-aventis), the active enantiomer of the second-generation H₁-antihistamine cetirizine (Zyrtec), has been approved by the FDA for treatment of seasonal and perennial allergic rhinitis (SAR and PAR) and chronic idiopathic urticaria in adults and children 6 years of age and older. Cetirizine has been approved by the FDA for over-the-counter use and may also become available generically in the US. Levocetirizine has been available in Europe since 2001.

View the Expanded Table: Some Drugs for Altitude Illness, Jet Lag, and Motion Sickness

A new albumin-bound formulation of paclitaxel (Abraxane - American Pharmaceutical Partners) has been approved by the FDA for treatment of metastatic breast cancer after failure of combination chemotherapy or relapse within 6 months of adjuvant chemotherapy. This formulation is free of polyoxyethylated castor oil (Cremophor), a solvent thought to contribute to the hypersensitivity reactions that occur frequently with standard paclitaxel (Taxol, and others) and are severe in about 3% of patients.

View the Comparison Table: Some Nasal Sprays for Seasonal Allergic Rhinitis

Desloratadine (des lor at' a deen; Clarinex - Schering), an active metabolite of the H1-receptor antagonist loratadine (Claritin), has been approved by the FDA for oral treatment of allergic rhinitis and chronic urticaria in patients at least 12 years old. The patent for loratadine expires in December 2002, and generic or over-the-counter versions are expected.

The FDA has approved Odactra (ALK), a sublingual allergen extract, for immunotherapy in adults 18-65 years old with house dust mite (HDM)-induced allergic rhinitis, with or without conjunctivitis. Odactra is the first sublingual allergen extract to be approved in the US for this indication. Three other sublingual allergen extracts were approved earlier (see Table 1).

Tafasitamab-cxix (Monjuvi – Morphosys), a CD19-directed cytolytic antibody, has received accelerated approval from the FDA for use in combination with lenalidomide (Revlimid) for treatment of relapsed or refractory diffuse large B-cell lymphoma (DLBCL), not otherwise specified, including DLBCL arising from low grade lymphoma, in adults who are not eligible for autologous stem cell transplant. Accelerated approval was based on overall response rates.