Scientific Glossary

▾

For compounds with long half-lives, reaching steady state through regular maintenance dosing takes 4-5 half-lives — potentially weeks. A loading dose front-loads the compound to quickly achieve target concentrations. For semaglutide (7-day t½), steady state without loading would take ~5-6 weeks. Clinical protocols often use gradual titration instead of true loading doses for GLP-1 agonists to minimize GI side effects. Loading strategies are also used in some peptide research cycles for compounds with very short half-lives where rapid saturation of target systems is studied.