Viatris and Kindeva Drug Delivery have received FDA approval for Breyna inhalation aerosol, which is a generic version of AstraZeneca's Symbicort. The drug is intended to treat asthma and chronic lung disease. The aerosol will be available in dosages of 160 mcg/4.5 mcg and 80 mcg/4.5 mcg. Sales are scheduled to begin in 2022.