In this context, it usually means products sold outside regulated pharmacies often labelled "for research only"
Drugs and materials ()Isoprenaline tartrate (dissolved in water) and H89 (dissolved in dimethylsulfoxide) were from Sigma-Aldrich (Taufkirchen, Germany)
Mitchell JL, Buckham R, Lyons H, Walker JK, Yiangou A, Sassani M, et al
The peptide is supplied in lyophilized form to preserve stability during storage and transport, supporting reliable performance in receptor signaling assays, biochemical investigations, and other controlled laboratory research applications
Oral administration Oral peptides face significant bioavailability challenges