l carnitine comes from L-Carnitine | Linus Pauling Institute LeanShots Liquid L-Carnitine Shot (3000mg)

For general peptide storage best practices, storing peptides after reconstitution and peptide refrigeration timelines provide comprehensive guidance that applies across all peptide types, including tirzepatide

Composition: Sterile water with 0.9% benzyl alcohol Form: Multi-use vials Primary Use: Diluent / solvent for reconstitution of lyophilized compounds Storage: Store at controlled room temperature

doi:10.1017/s0007114520003207 Khani B, Mardanian F, Fesharaki SJ

Because this combination bypasses the first (and rate-limiting) step to produce glutathione in your cells, it is vital in supporting higher glutathione levels through diet