long acting

/lɔŋ ˈæktɪŋ/
adjective
  1. Designed to work or remain effective for a long period of time, especially of medications or treatments.
    • Long-acting allergy pills can provide relief all day with just one dose.
    • Some long-acting injections are given once a month instead of daily.
    • The doctor prescribed a long-acting insulin that lasts for 24 hours.
What does "long acting" mean? | whatsthatwordmean | whatsthatwordmean