This is a gradual process
Garca-Gimnez JL, et al
So to determine whether you want to try weight gain supplements, weigh the pros and cons
Schluter J, Peled JU, Taylor BP, Markey KA, Smith M, Taur Y, et al
As a potent mitogen, IGF-1 has been implicated in cell proliferation pathways relevant to tumor growth, though causality in humans remains debated. Pollak, Nature Reviews Cancer Post Cycle Therapy (PCT) After IGF-1 Peptide Use IGF-1 peptides like LR3 and DES do not directly suppress endogenous testosterone production, which means most users dont require a traditional post cycle therapy (PCT) protocol when these peptides are used alone
Research is ongoing to better understand how oral delivery compares to other forms