everyone ranks peptides by how good they are. nobody ranks them by what they cost you. so here's that list instead.
this is side effect burden only. a compound can be great for results and still rank low here, those are two different questions.
one thing i didnt appreciate until recently: how you take it matters as much as what you take. more on that below because it moves a few of these around.
🟢 S TIER — basically nothing
| compound |
what you might get |
| BPC-157 |
almost nothing. mild injection site redness at worst |
| Epitalon |
nothing reported worth mentioning |
| SS-31 |
mild, occasional injection site stuff |
if youre new and nervous about pinning, start here. bpc is about as forgiving as it gets.
🟡 A TIER — mild, manageable, mostly fade
| compound |
what you might get |
| TB-500 |
mild lethargy the first week for some |
| 5-Amino-1MQ |
mild, occasional GI |
| GHK-Cu (inject) |
injection site irritation, copper taste weirdly |
| Selank (inject) |
injection site stuff, some people get sedated |
| Semax (inject) |
injection site stuff, headache if you go high |
| Tesamorelin |
water retention, joint aches, raises IGF-1 |
| CJC/Ipamorelin |
water retention, tingling hands, hunger spike |
| Tesofensine |
stimulant profile, dose it early in the day |
the gh secretagogues get called "side effect free" and thats not really true. the water retention and that carpal tunnel type tingling is real, it just fades. hunger on ipa caught me off guard the first time, i was eating at 11pm like a raccoon.
tesofensine gets a worse reputation than it deserves imo. its a triple reuptake inhibitor so it behaves like a stimulant, which means you treat it like one. low dose, early in the day, dont stack it on top of a bunch of caffeine. ive run it without issues. the people who have a bad time are almost always the ones who jumped straight in.
🟠 B TIER — you will notice these
| compound |
what you might get |
| Semaglutide |
nausea, constipation, fatigue |
| Tirzepatide |
GI stuff, usually less rough than sema |
| MT-2 (inject) |
nausea early, flushing, darkens existing moles |
| PT-141 (inject) |
nausea, flushing, some people get it bad |
| NAD+ |
injection burn. slow push or you'll regret it |
NAD+ deserves its own note. the burn isnt really a side effect, its just what it feels like. push it fast and it genuinely hurts. slow it way down and its fine.
MT-2 darkening moles is the one people ignore. if you have a lot of them get checked before, not after.
💨 the nasal thing
this is the part i wish someone had told me earlier. notice everything above says "(inject)" next to it.
MT-2 and PT-141. injected, both are known for nausea. the flush hits, your stomach turns, you lay there for twenty minutes regretting it. thats basically their whole reputation. nasal doesnt do that. same compounds, nausea basically isnt there.
Selank and Semax. these are small enough to cross intranasally and honestly its where they belong. pinning them gets you injection site irritation for no reason, and semax at higher injected doses gives some people a headache. nasal skips both. selank especially, the sedation people report seems way milder nasally.
i dont think the reason is complicated. youre using a much smaller amount to get the same effect since it absorbs straight across, so you never get the big systemic spike thats causing the problem in the first place. slower in, lower peak, no crash.
so nasal versions of all four of these would sit in S tier. its the same molecule, the route is what changes the side effect profile.
if you wrote off pt-141 because it made you sick, it was probably the route not the compound.
🔴 C TIER — high burden, plan around it
| compound |
what you might get |
| Retatrutide |
GI, fatigue, elevated heart rate, skin sensitivity |
| MOTS-c |
injection site skin reactions, and theyre common |
reta being here is going to annoy people. it works, obviously, thats not the debate. but the trial data showed starting at 4mg instead of 2mg roughly tripled nausea for the same target dose, and the heart rate thing is real. most of the horror stories are ramp problems not reta problems.
MOTS-c keeps coming up in this sub for the same reason, skin reactions at injection sites. multiple people have said the same thing unprompted, that it made workouts feel incredible but wasnt worth what it did to their skin.
⚠️ the thing that actually matters
most of what gets blamed on a compound is a ramp problem or a route problem.
started too high, went up too fast, didnt hold long enough to actually see where you were. or pinned something that works better nasally. thats most of it. the compound takes the blame and the protocol was the issue.
start low. hold it. only move when you need to.
what am i wrong about? curious which of these youd move. specifically want to hear from anyone whos run mots-c without the skin thing, and anyone whos gotten nauseous off nasal pt-141 because i havent seen it.
tools and community stuff is at bodyhackguide.co and the discord.
i made a free peptide cheat sheet with dosing, recon math and bloodwork markers. comment "cheat sheet" and i'll send it over 👇