Guys, these peptides are already present in your whey protein. Adding Biogro to your protein is basically just adding a few more grams of protein to your protein.
Lots of people claimed for years and continue to claim to have significantly better recovery with glutamine. Yet a high protein diet already consists of more than enough glutamine for your bodies needs.
So yes, I would consider such effects to be a placebo until demonstrated otherwise in a blind study.
I am of course not cancelling out placebo, but just to note, Bio-Gro was basically the only addition I added after using what I was using for a few weeks straight already. So to have the DOMS be reduced very notably and for that to be consistent since (I've been using the stuff for 2+ week now), could be strong placebo or could be effective.
I totally understand that adding Bio-Gro is essentially like adding another scoop of protein powder minus the macronutrients, it's one of the questions I actually brought up on AM a few weeks back, didn't really get a good answer but I decided to drop the issue
I do recall bringing up the same question to the iSatori folks on bb.com as well. Basically I asked "Why can't I just add another scoop of protein and reap the benefits that way instead of using Bio-Gro?" There's still plenty I'm in the dark about for a product like Bio-Gro and PF3 and I am waiting to see if there will be further findings particularly: can I reduce my actual protein macros and still be able to utilize roughly the same amount of aminos as I would have with Bio-Gro in the mix (optimizing amino utilization) compared to without Bio-Gro + higher protein macros (hopefully that made sense). That was one of the claims iSatori was making (being able to utilize more of the aminos you take in more efficiently), but I personally am still waiting to see if this can actually be demonstrated beyond just anecdotal findings.
Lot's of questions, very few answers from both companies for each of their respective products. I'm still using Bio-Gro though and will be trying out PF3. So far, it could totally be some strong arse placebo working here and I'll LMAO if it one day is demonstrated that it's all straight up placebo