For systemic benefit, injection wins
Puig M, Shubow S (2025) Immunogenicity of therapeutic peptide products: bridging the gaps regarding the role of product-related risk factors
Xiao B, Zhang M, Viennois E, Zhang Y, Wei N, Baker MT et al (2015) Inhibition of MDR1 gene expression and enhancing cellular uptake for effective colon cancer treatment using dual-surface-functionalized nanoparticles
NAD+ Flexible dosing : Ranges from 100-1,000 mg based on needs Fast absorption : Injections work within hours, nasal spray offers daily convenience Clinical use : Higher doses (400-1,000 mg) for recovery protocols Typical NAD+ injection dosages start at lower levels and may increase based on individual response and health goals
Every supplement comes with questions about safety, and glutathione side effects deserve a straightforward, honest answer
Clinically, BPC-157 and TB-500 are synergistic