More blood means more oxygen and more nutrients delivered to the damaged tissues
The review suggests their effects may be comparable, and because they use different mechanisms, combining them could provide additive benefits

Joint pain and injury: knee, shoulder, wrist, and hip conditions including arthritis, tendon injuries, cartilage damage, and general joint discomfort (via subcutaneous or intra-articular injection) Musculoskeletal trauma: hairline fractures (particularly foot), wrist injuries, muscle strains, deltoid and Achilles tendon damage, and general soft tissue injuries Post-surgical recovery: supporting tissue repair following orthopedic and other surgical procedures Sports and exercise rehabilitation: slow recovery from training, exercise-related soft tissue injuries, and reducing downtime between sessions Gut health: gastrointestinal mucosal protection, inflammatory bowel conditions, and systemic inflammation reduction Degenerative joint conditions: chronic pain from advanced joint degeneration where conventional treatments have provided incomplete relief Skin healing: tissue regeneration and wound healing, including extended protocols for significant skin repair requirements BPC-157 is among the most frequently prescribed healing peptides in physician-supervised longevity and regenerative medicine practice

The titration protocol exists because GLP-1 receptor agonists cause gastrointestinal side effects, primarily nausea, that are dose-dependent