During a recent episode of Trensparent with Nyle Nayga, coach Calum Raistrick opened up about the peptides he has been using with athletes throughout the current bodybuilding season, highlighting SLU-PP-332 as one of the most valuable tools in his arsenal.
When asked which peptides have impressed him the most lately, Raistrick pointed to two compounds in particular.
“Two of the biggest ones recently have been SLU-PP-332, which is an exercise mimetic, and GC-1, which is a slightly more tissue selective thyroid support,” he said.
Raistrick explained that he has been incorporating SLU-PP-332 at multiple stages of contest preparation. According to him, the compound has been useful both during the early phases of dieting and after competitions.
“For quite a few athletes this year, I’ve been using SLU quite early on in the prep and also post show to help that post show transition as well,” he said.
“And it seems to just leverage a little bit more of what we’re getting out of the deficit in the first place.”
Host Nyle Nayga also spoke highly of SLU-PP-332, mentioning it among the ones he frequently turns to. He listed it alongside “BPC-157, TB-500 for soft tissue healing, retatrutide and other GLPs, mitochondrial support such as SS-31, methylene blue, SLU, and a bunch of others.”
The discussion then shifted toward thyroid support, where Raistrick explained why he has become increasingly cautious about using T3 during contest prep.
“I’m not a huge fan of T3 in prep for a lot of athletes,” he said. “I feel as though T3 is something that is abused a little bit more than it should be.”
Raistrick believes the downsides often outweigh the benefits when athletes rely too heavily on the hormone.
“And usually in those situations it comes at a cost to the look, not a benefit to the look,” he explained. “Because athletes flatten off and lose a bit of life. They’ll get a little bit stringy towards the back end of prep with aggressive exogenous thyroid use.”
As an alternative, he highlighted GC1 as a promising option.
“The GC1 has been a really interesting tool there for whether an athlete is using monotherapy like T4 only and GC1 together or just T4 only,” Raistrick said.
