I wonder if I have ruined it by keeping it for 2 days in the draw
Storage before and after reconstitution Lyophilized powder (before mixing): Freezer: -20C (best, 24+ months) Refrigerator: 2-8C (good, 12-18 months) Room temp: Short-term only (weeks) After reconstitution: Refrigerate immediately (2-8C) Use within 30 days Never freeze liquid peptide Protect from light (amber vials or keep in box) Traveling with GHK-Cu: Cooler with ice packs Refrigerate ASAP Powder easier to travel with Check local laws for international See our peptide storage guide , how long reconstituted peptides last in fridge , and should copper peptides be refrigerated

However, some studies reported the inability of TAT-PTD to translocate monolayers of Caco-2 and MDCK epithelial cells (Violini et al., 2002), and in intestinal insulin absorption from the ileum in rats ( in vitro study of epithelial transport of insulin by D-form of arginine octamer (D-R8) indicated that cellular uptake is the critical step for efficient epithelial absorption and showed that D-R8 mediates intestinal epithelial transport of insulin by energy-independent unsaturable uptake ( Biotinylated transportan and its analog transportan 10 were reported to pass through epithelial Caco-2 monolayer cells mainly via transcellular transport and partly via paracellular pathway, while penetratin passes across cell monolayers in low yields, possibly due to partial degradation (Lindgren et al., 2004)
While they didn't go down quite as easily as soft gels, the tablets weren't overly large and I found them easy to swallow, with no noticeable smell or aftertaste
For tirzepatide (various vial sizes), the same principle applies
Users often describe going from years of digestive discomfort to feeling noticeably lighter and more stable