Anyone running SLU-PP-332 oral capsules with reta and GH long enough to actually feel a difference?

16 posts · started by Dutchman · Apr 30, 2026

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Paris GH
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Paris GH
173 posts · joined Mar 2018
#1
The injectable SLU-PP-332 sellers appearing in France are marketing something that cannot work as described. The chemistry does not support aqueous injection of a hydrophobic compound. Oral capsules are the only legitimate delivery route currently available.
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Dutchman
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Dutchman
582 posts · joined Apr 2016
#2
Hit week 8 today on a stack running SLU-PP-332 oral caps alongside 1mg reta weekly and 3iu GH before bed. Body comp is moving but I genuinely cannot tell what the SLU is contributing on top of the reta and the GH which are doing what they always do. Ran the numbers and at the cap dose I'm taking the cost is real, want to be sure it's earning its place in the protocol. Anyone here pushed it past 12 weeks and felt confident it was actually pulling its weight rather than just adding to the GLP-1 effect? Also keen to hear from anyone running the injectable form because everything I've read says the compound is hydrophobic and won't suspend in BAC water properly.
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FrankfurtFit
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FrankfurtFit
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#3
Came in to back up the hydrophobic point. Tried sourcing the injectable version last year, got two vials that looked fine in storage but had visible particulate within a week of being kicked around in a pin bag. Capsules dosed twice a day fasted is the only way I'd run it now.

On the stack itself, ran SLU-PP-332 caps for 10 weeks with reta and 3iu GH on top of TRT. Hard to separate what's doing what when you've got that many compounds going at once. Conditioning improved more than I'd expect from reta alone, but I'm not sure I'd attribute it to SLU specifically without bloods showing something. Pulling a full panel at week 12 and will report back.
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SWE LIFTS
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SWE LIFTS
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#4
Eight weeks in on the caps alongside 3 IU GH fasted AM and 1mg reta split Monday and Thursday. Genuinely hard to isolate what is doing what at this point with everything running together, which is the honest problem with stacking this many compounds.

The mitochondrial density angle makes sense on paper but I would want at least 12 weeks before saying anything definitive. The cardio capacity thing is the one I actually feel - same HR at higher output than I was getting before - but that could also just be the reta improving body composition. Sticking with it. Oral caps only, anyone buying injectable vials of this is getting burned.
BIGDADDY
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BIGDADDY
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#5
The injectable SLU warning is worth repeating. It does not dissolve in BAC water - if someone is selling it as a vial they are either misinformed or not trustworthy. Caps only. The oral form is what the actual research used and altering the structure to make it water-soluble is not a solved problem. Stick to what works.
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GODZILLA
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GODZILLA
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#6
The injectable scam angle is worth hammering home. We've seen members waste money on SLU vials that can't possibly be what they claim given the chemistry. Oral caps from a reliable source or nothing - the compound just doesn't work as an injectable in any meaningful sense.
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FLbodybuilder
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FLbodybuilder
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#7
Week 8 on the caps, 250mg twice a day from a UK source, alongside 2 IU GH and 1mg reta twice weekly. Recovery between sessions is noticeably better but it's genuinely hard to isolate with the GH and reta already doing their thing. Not going to call it until I hit 12 weeks at minimum, the mechanism is interesting enough to give it a proper run before deciding anything. Blood work in 4 weeks so I'll see if anything shows on the metabolic markers.
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Dutchman
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Dutchman
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#8
14 weeks in here and week 8 wasn't when I started feeling it - more like week 10-11 before the recovery and cardio output shifted in a way that felt real. Running reta at 1mg twice weekly and 3 IU GH alongside so isolating the SLU contribution is genuinely hard, but the oxidative capacity changes felt different from what the reta alone was doing.

Without a blood marker to confirm what it's actually doing the experimental tag sticks. You can't pull SLU levels and there's no standard proxy for mitochondrial density changes. 12 weeks minimum before drawing any conclusions is the right callout - week 8 is just not long enough.

5-Amino-1MQ is next on my list. NNMT inhibitor angle, different mechanism but sits logically on top of the SLU rationale if you're going hard on the metabolic stack side. Nothing to report yet but watching the early data closely.
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FrankfurtFit
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FrankfurtFit
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#9
Week 9 into the oral caps here, 20mg daily. Hard to isolate what's doing what when you're running it alongside reta and low dose GH but the endurance change has been noticeable - cardio sessions that used to genuinely wreck me feel like just another session now. That said, I won't call it definitively until I'm past 12 weeks, too many variables in this stack. The injectable sellers are still all over forums trying to move stock though, saw another one promoted last week.
BIGDADDY
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BIGDADDY
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#10
The injectable vial point is worth repeating. SLU-PP-332 is hydrophobic so it simply cannot dissolve properly in BAC water. If someone is selling it as a clear injectable solution, the compound has either been chemically altered or it is not what the label says. Oral capsules only for now, same as the research it is based on.
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SWE LIFTS
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SWE LIFTS
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#11
Week 9 on the caps alongside 3IU GH fasted AM and 1mg reta split Mon/Thu. Genuinely hard to isolate what the SLU is actually contributing vs what the reta and GH are already doing on their own - they all hit overlapping pathways so there's no clean read on it. Recovery between sessions does feel noticeably better than it did at week 4 but whether that's the SLU specifically or just everything compounding together I can't honestly say. Someone in another thread is adding 5-Amino-1MQ on top of this same stack. Not touching it yet, nowhere near enough data and I'm already not sure what's doing what in my current protocol. 12 weeks minimum before I even consider changing anything.
GODZILLA
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GODZILLA
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#12
Good discussion. The oral-only rule for SLU-PP-332 is something we keep having to repeat because injectable vials keep appearing from sketchy sources. Capsules or nothing. Anyone getting genuine results at the 8+ week mark please keep posting, the community data on this one is still thin.
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FLbodybuilder
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FLbodybuilder
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#13
Week 8 is too early to draw conclusions honestly. Mitochondrial adaptation is cumulative, same as aerobic training - takes weeks to show up in conditioning. 12 weeks minimum before you're calling it either way. Separately, anyone here adding 5-Amino-1MQ into the stack? NNMT inhibitor angle, starting to appear alongside SLU in a few advanced protocols. No real data from anyone I know personally yet but it's on my radar for next run.
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Dutchman
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Dutchman
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#14
Still running it at week 14 now. Honestly the mitochondrial density angle is hard to assess subjectively but my cardio capacity at this stage of prep is noticeably better than previous years on the same stack without it. Endurance work that would have me gassed by week 12 just isn't doing that. Could be the reta, could be SLU, probably both working together. Either way I'm keeping it in.
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FrankfurtFit
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FrankfurtFit
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#15
For what it is worth I would not even try to assess this properly until week 12 minimum. You are running it on top of reta and GH so picking apart what SLU is actually doing at week 8 is near impossible. The exercise mimetic tag does seem to hold up though, the mitochondrial side of it looks real even if the community data is still thin. Just stick with the oral caps, anyone pushing injectable SLU vials does not understand the compound is hydrophobic and it will not hold in BAC water. Keep logging it, a proper 12 week writeup on a stack like this is genuinely useful.
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SWE LIFTS
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SWE LIFTS
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#16
Worth flagging again, do not buy injectable SLU vials no matter how it's pitched. The compound is hydrophobic so any vendor selling vials has either altered the structure (losing receptor binding) or is selling something else entirely. Caps only at this stage. The 5-Amino-1MQ talk is getting louder in the metabolic stack threads but it's still very early, almost no community data to point at yet.
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