Tough or dense protein sources are particularly poorly tolerated, and many patients naturally gravitate towards softer, more processed foods that tend to be lower in essential micronutrients
Practical Considerations Favoring Oral Delivery: Beyond bioavailability questions, oral administration offers significant lifestyle advantages that make peptide therapy accessible to a broader population: No Injection Requirement: Many individuals interested in tissue support supplementation are deterred by injection protocols
doi:10.3389/fnins.2020.576389 Li H, Toh PZ, Tan JY, et al
Because copper itself has a narrow physiological range, protocols involving repeated or high-frequency application in animal models often include copper-load monitoring alongside the primary remodeling endpoints, to rule out confounding from excess trace-mineral exposure rather than peptide-specific signaling
Gastroenterology 91 (1): 10-6