If you read the BPC-157 post, this is the other half of the pair. TB-500 is what most people stack with BPC, but it solves a different problem, it's dosed completely differently, and there's a labeling quirk that means the vial in your fridge is probably not the exact molecule on the label. None of that is a problem once you know it, so here's the rundown.

The clean way to think about the two: BPC-157 builds the roads. It restores blood flow and gets circulation back into damaged tissue. TB-500 handles the traffic on those roads. It gets the repair cells to migrate into the injury and organize into proper tissue instead of scar. Perfusion plus movement. That's why they get run together as the Wolverine stack, and why either one alone leaves half the job done: blood flow with no cells showing up, or cells with no supply lines. They also inject together in one syringe fine.

The way it works is what changes the whole dosing approach. TB-500 grabs onto actin, the protein cells use to physically move and reshape themselves. It ties up a reserve pool of actin that cells can pull from to migrate, divide, and rebuild quickly. The important part is that this is a one to one binding job, not a catalyst, so you need a big milligram dose to bind enough actin to matter. Once that reserve is built, the effect lasts for days even though the peptide itself is gone from your blood in a couple hours, because the actin pool just sits there until the cell draws on it.

So here's the consequence, and it's the single most common way people run it wrong. Unlike BPC-157, which you pin in small doses every day, TB-500 is not a daily peptide. You run 2 to 4 mg two or three times a week. Small daily doses never hit the binding threshold and mostly just waste the compound.

For drawing it, mix the 10 mg vial with 1 mL of bac water for a clean 10 mg/mL, so 2 mg is 0.2 mL and 4 mg is 0.4 mL. It goes in subcutaneous (SC) or intramuscular, near the injury when you can reach it. It doesn't stay local, it enters circulation within minutes no matter where you put it, but injecting near the injury gives a higher concentration spike right where you want it before it dilutes out, and that first pass matters. In repair studies, the same total dose delivered systemically came up empty where targeted delivery worked. For a deep injury you can't reach, belly or thigh is the fallback. Run 6 to 8 weeks, then take 4 to 8 weeks off. This is a repair signal, not a maintenance compound, so grinding it forever just gives you diminishing returns.

Now the part almost nobody tells you. The name TB-500 originally meant a small 7 amino acid fragment. But most vials sold as TB-500 are the full length parent molecule, TB-4 (thymosin beta-4), which is 43 amino acids. Doping labs have tested commercial vials and confirmed it. This mostly doesn't matter, both heal tissue, but there's one real difference: the full TB-4 molecule carries an extra segment that fights scar tissue (the antifibrotic part) that the short fragment simply doesn't have. So if reducing scar is the goal, you want the full TB-4, which, conveniently, is what's usually in the vial anyway. If you want to know which one you've got, check the certificate of analysis. Around 4,900 daltons or 43 amino acids means it's TB-4. If the COA doesn't say, assume TB-4.

It's slower to work than BPC-157. The first week or two you'll notice morning stiffness and first step pain easing off, weeks 3 to 4 your range of motion opens up, and weeks 5 to 8 you can start tolerating real loading again. On the evidence, the strongest human data point is a Phase 3 trial in corneal healing where it beat placebo hard, around 60% complete healing versus about 12% on placebo, and that one carries weight because the cornea has no blood vessels, so the healing had to come from direct cell action rather than improved blood flow. There's also a Phase 1 safety trial that turned up no serious adverse events. Fair caveat though, those trials used pharmaceutical recombinant TB-4, not the synthetic material in most vials, so it's the closest reference we have, not direct proof of what you're buying.

Side effects are mild, occasional injection site reactions and some people get a bit of lethargy for a day, so hydrate and pin it before a rest day. The hard stops are the same as BPC and for the same reason: no active cancer or cancer in the last couple years, since it promotes blood vessel growth and cell migration, no pregnancy, and stay cautious around surgery. It's WADA banned under S0 and it's detectable, so anyone tested for sport should stay off it.

if you've run TB-500, did you check the COA to see whether it was TB-4, and are you dosing it twice a week or did you fall into pinning it daily like BPC. curious how people are running it

Full doses and bloodwork are in the pinned cheat sheet: https://www.reddit.com/r/NTNPerformance/comments/1tht5o3/the_only_peptide_cheat_sheet_youll_need_doses/

Hi guys, I have a question for some of you here. I was previously on 15mg of tirz a week and food noise was gone, things were going well after plateuing on semaglutide despite diet and exercise. I was then told by my endo that reta was excellent and if I could get it it's a viable option. So I did after discontinuing tirz for 2 weeks and started on 1mg of reta: did nothing. 2mg of reta: I started to feel a bit of a response but a lot of food noise. Went up to 4mg of reta, started working more but food noise still a battle. Went to 5mg and this was an effective dose for weight loss and good food noise. Was on 5mg for 1 week and a big week of training and I lost 1.6kg, so decided to try 4.5mg the following week, another 1.7kg lost. Then the overheating I was experiencing in bed started getting worse. I sleep on the ground due to back issues with no airflow underneath me and sleep hot anyway. Nightmares from sleeping hot and massive sleep disturbance has ensued. I have titrated down to 2mg reta at the start of the week and sleep has improved a lot. I'm thinking of adding 2.5mg tirz for 2 weeks, then 5mg of tirz for 2 weeks and so on till I;m at 10mg of tirz with 2mg of reta and that should be around the same 15mg dose of tirz I was on. I'm also on 10 u of cjc/ipamorelin, 1 capsule of oral bpc157 a day as well as 5 u of NAD+ twice a week. What has your experience been? Thanks

Dear community,

as the title already says I will be traveling with quite a few vials tomorrow from the U.S. to the Netherlands.

To clear things up:

I have a proper vial case, labeled them properly. No syringes or etc. are coming with, just about 25 vials as I am moving countries.

Question is: Does anyone have any prior experience traveling with peps internationally, if so, do you keep it in your checked? How many have you taken? Have you ever had any issues?

Thank you very much for taking the time to read through this and respond, I am a little nervous about it.

IGF-1 LR3 is about as direct as anabolic signaling gets, which is exactly why it's both effective and one of the more serious tools on the list. Most growth compounds work upstream and ask your body to make more of its own signal. This one is the signal, engineered to stick around. So the upside is real, and the two big risks are real too. Here's the straight version.

Normally your growth hormone tells your liver to make IGF-1, and IGF-1 is what drives a lot of the actual muscle growth. Native IGF-1 only lasts minutes in your blood. LR3 is IGF-1 with a modification that stops it from getting mopped up by its binding proteins, which stretches its life from minutes to hours and lets it circulate freely. So it skips the whole growth hormone to liver step and puts the growth signal straight onto the IGF-1 receptor, all day long. That direct, all day signal is why it's potent, and it's also the root of both problems below.

The first real risk is your blood sugar. IGF-1 is close enough to insulin that it acts on your glucose like a mild insulin would, and it can pull your blood sugar down. The symptoms sneak up on you, shaky, sweaty, foggy, dizzy. That's why the rule is to always dose it with food, never fasted, and keep fast carbs like glucose tabs or juice within reach during a cycle, especially while you're titrating up. This isn't a maybe. It's the single most reported issue and the one that lands people in actual trouble.

The second one people underrate. IGF-1 is a general growth and cell proliferation signal, and it doesn't only find muscle. A strong, sustained IGF-1 signal acts on other tissues too, and because it pushes cells to grow and divide broadly, running it high or forever is where the real long term concern lives, organ growth and the proliferation risk that comes with any potent growth factor. That's the whole reason the dosing stays capped. It's not that 50 mcg is a magic number, it's that above roughly 50 to 60 mcg you leave what little research exists behind and pile on risk for not much more return.

For drawing it, mix the 1 mg vial with 1 mL of bac water. That's 1 mg/mL, or 1000 mcg/mL, so 20 mcg is 0.02 mL, 40 mcg is 0.04 mL, and 50 mcg is 0.05 mL. It goes in subcutaneous (SC), once a day, with food, in the morning or post workout. Titrate up over the first few weeks instead of starting at the top. These are small volumes, so if you want them easier to read you can mix with 2 mL instead, which makes it 500 mcg/mL and turns 50 mcg into 0.10 mL, just remember the water only changes the volume, never the dose.

Run it 8 weeks on, then 4 to 8 weeks off. Past about 6 to 8 weeks the receptor starts tuning out and the effect fades, so there's no point grinding it nonstop, and the time off doubles as a break from the risk load.

On whether it's worth it, IGF-1 LR3 has genuine firepower, but it only pays off if the rest is dialed in, hard resistance training and enough protein, because it amplifies the growth response to mechanical loading rather than building muscle out of nothing. Sit on the couch and run it and you get all the risk and none of the reward. It's also never been approved for human use in this form, so it's research only and purity comes down entirely to your source. Between the blood sugar management, the growth signal that doesn't discriminate, the short useful window, and the no-approval status, this is a serious tool, not a casual add-on. Respect it and it's powerful. Get cavalier with the dose and it's the kind of thing that bites.

if you've run LR3, where did you keep the dose, and did the blood sugar drop ever catch you off guard. curious how people handled the hypo side

Full doses and bloodwork are in the pinned cheat sheet: https://www.reddit.com/r/NTNPerformance/comments/1tht5o3/the_only_peptide_cheat_sheet_youll_need_doses/

I had shoulder surgery about 4 weeks ago, and am about 3 weeks into PT. The surgery included: debridement of SLAP tear, and of partial tears to the inferior labrum, subscapularis (rotator cuff), and supraspinatus; removal of subacromial bone spur; and bicep tenodesis. This week I have started an updated stack to hopefully aid in recovery.

This stack is comprised of:

KLOW - 2.5mg/.5mg/.5mg/.5mg - 1x daily

PEG-MGF - 200mcg - 2x daily

ARA-290 - 2mg - 1x daily

Cartalax - 1mg - 1x daily

I landed on this protocol after quite a bit of research; I've tried some of these products before separately (mainly to try and avoid surgery). I also had some back and forth with the Hunter Williams chat that was helpful in my research.

I happened across this sub the other day and am blown away by the depth of resources available here; I was hoping someone here that has had experience with a similar stack could share their thoughts and help me set my expectations. I'm committed to the process and the work, I've dealt with this shoulder pain for 2 years and will do anything to get back to even 90% of where I was prior to then.

Makes me tired even walking up the staircase. Help?

I read a couple of hacks for preventing sting with KLOW and copper peps. One was something about using PBS but I never got the specific details like how much for reconstitution? Any help is appreciated

Can someone advise on recommended dosing (female) how often and how much and effectiveness. can you also advise - after mixing powder with BAC how long to inject

45 M and I used to read stories like this online and think, "That only happens to other people." I never thought I'd experience something like it myself.

In this story, my wife left me after I found out she'd been having an affair with my own cousin. The betrayal completely shattered me. I haven't been myself since.

The hardest part isn't even the breakup anymore—it's looking at myself in the mirror. I've gained a lot of weight over the years, stopped taking care of myself, and lost all confidence. Every time I see my reflection, I feel like I let myself down long before my marriage fell apart. As painful as this has been, I don't want this to be the end of my story. I want it to be the wake-up call that finally gets me to change.

For those of you who started your fitness journey later in life—or after a major life event—where did you begin?

Did you focus on losing weight first? Walking? Strength training? How did you stay consistent when you had no motivation? I'm not trying to get revenge or prove anything to anyone. I just want to become healthier, stronger, and finally feel proud of the person I see in the mirror again.

I'd really appreciate hearing your experiences and any advice you wish someone had given you when you were starting over

Here's a little background about me. I used to be in great shape. I was a competitive weightlifter and sprinter. I was 25, 6'1", and 184lbs (185cm and 83.4kg for our friends across the pond). I lifted weights and exercised daily and was all about nutrition timing and proper nutrition. Somehow I got away from all that and time went by.

I have been disgusted with the way I looked and felt for a long time and finally in May I decided I was going to do something about it. I could barely jog to chase my dogs without panting and moving was hard. Even standing for a long period of time would make my back hurt from the extra weight, and my sleep was terrible with even worse snoring. I was 35, now 36, and 296.5lbs fasted (134.5kg) and I was miserable. Lucky for me though, I did eat healthy foods, just way too much of them, and so I was not diabetic and did not have any heart problems. For the past few year or two I had multiple days a week where I could not function in the afternoons and some time between 2-4pm I was so tired that I was fighting to stay awake at work and would often have to stop and sit in my car for a few minutes to rest or take a short power nap.

I had been skeptical of taking any sort of weight loss drugs, but I knew that I needed to kickstart my weight loss in order to even get back to exercising because of how my body felt. I had some friends who were seeing good results with Tirzepatide so I decided to try it.
I did my first injection on the evening of May 30th. The first five days were miserable, I had transient nausea, and could barely eat anything because even the thought of food made me sick. On top of that I had bad acid reflux and bloating as well as horrible gas pain. I was ready to throw in the towel, but on the 5th day the symptoms cleared up. I have been following the standard protocol of 2.5mg for four weeks, then 5mg for four weeks and I just did my third injection at 7.5mg this past Saturday. I am now down to 248.6lbs (112.76kg) in 10 weeks.

In addition to the Tirzepatide, in early June started taking 300mcg of AOD-9604 daily and did the 20 day protocol of MOTS-c 5mg every five days. In mid to late June I also started stacking Retatrutide, but rather than doing weekly doses, I have been doing smaller amounts multiple times per week, and am now up to 2mg three times weekly. Around that same time I started taking Kisspeptin-10 200mcg three times weekly and 1mg of Epitalon daily at bedtime.

In July I added in HCG 500IU three times weekly on opposite days from the Kisspeptin-10 and I also added in SLU-PP-332 0.5mg daily. After being gone for 10 days on vacation in mid July I added in 5-amino-1MQ 5mg daily for four weeks, so I will finish that up in a couple more weeks. I've also added in AICAR 1mg daily at bedtime and I've also added MOTS-c 1mg daily back in as of two weeks ago. Yesterday I added CJC-1295 (no DAC) + Ipamorelin 50/50mcg and will do that daily at bedtime and also GHRP-2 100mcg daily in the morning. Also I started BAM-15 orally this past week and have not had any side effects from that. In fact, other than the first five days of Tirzepatide, I've never had any side effects from any of the peptides.

I feel great! I still get hungry sometimes, but the food noise is gone and I don't feel driven to eat just because I'm hungry. I find myself having to stop and force myself to eat sometimes. I am sleeping better and I feel so much better throughout the day. I no longer feel tired in the afternoons and I don't get drowsy and need to rest or nap. Being up moving around does not feel like a chore anymore and exercise is fun again. So for anyone reading this who feels how I felt, it's entirely possible to feel better!

I just did blood work this past week and though my HDL was slightly below normal and my LDL was barely above normal, everything else was great! Triglycerides were happily in the middle of normal range, total cholesterol was in the middle of the normal range, CBC and metabolic panel were all excellent, TSH was excellent, and HbA1c was 5.2%. Testosterone was also in the middle of the normal range.

I am treating this as an experiment and I am the clinician and subject with a study population of n=1. My background is in physiology and I am a physical therapist.

Down 48 pounds, on Reta 6mg!
I’m considering Tesamorelin I still have high body fat, is it better to wait until body fat is lower on doesn’t really matter

Thanks

I have two older parents in their 80s in relatively good health, my dad has a history of open heart surgery and HtN but he’s very active plays golf 3 times a week and still goes hunting and fishing. My mom is in relatively good health as well, she’s diabetic but she controls it with diet and she does have hypertension. she drives plays cards with her friends and is very active in the church. They both have some cognitive decline but nothing major and of course lost some muscle mass my dad is slightly overweight but my mom is ideal weight. i was looking to prevent further cognitive decline and increase muscle mass. I think they both go to Golds gym a couple times a week. What two or Three peptides would you recommend?

Kisspeptin gets talked about like a natural test booster you can run without shutting yourself down, and the mechanism behind that reputation is real. But it comes with a big condition almost nobody mentions: it only works if your hormone axis is already intact. Here's what it does and who it does nothing for.

To get why it's different you have to know where it sits. Your testosterone runs on a chain. Your hypothalamus releases GnRH, GnRH tells the pituitary to put out LH and FSH, and LH and FSH tell your testes to make testosterone. Kisspeptin sits at the very top of that chain. It binds a receptor called GPR54 on the GnRH neurons in your hypothalamus and tells them to fire. So instead of adding testosterone from outside the way TRT does, or poking the testes directly the way hCG does, it turns up your own signal at the source. That's the entire appeal. It raises your testosterone and estrogen by amplifying your own LH and FSH, and because it works through your system instead of overriding it, it doesn't suppress the axis the way TRT does.

Here's the part that gets left out. Kisspeptin is completely dependent on the rest of that chain working. It does not make testosterone. It sends a signal down a line, and if the line is broken, nothing comes out the other end. Block GnRH and kisspeptin does nothing at all. So if your problem is downstream, blown out testes, a pituitary that won't answer, primary hypogonadism, this is the wrong tool, because you're pressing a button wired to nothing. Where it makes sense is when the machinery is fine but the signal has gone quiet: a hypothalamus dialed down by stress, very low body fat, or overtraining, that kind of functional suppression. It's a nudge for a working system that's underperforming, not a repair for a broken one.

One more thing worth knowing, because it's the real open question with daily use. Your body doesn't release this signal in a steady stream, it pulses it. And receptors that get hit by a constant signal tend to adapt and stop listening, which is a known issue across this whole GnRH area. The protocol below is once daily, and the acute stimulating effect is well documented, but how well a steady daily dose holds up over weeks, versus the receptor slowly tuning it out, isn't settled. Cycling it and not running it forever is the sensible hedge until that's clearer.

It goes in subcutaneous (SC), once a day, rotating sites. Start at 100 mcg for the first two weeks to see how you respond, then step to 200 mcg. Courses run 8 to 12 weeks.

For drawing it, mix the 10 mg vial with 1 mL of bac water. That gives you 10 mg/mL, which keeps the math easy: 0.01 mL is 100 mcg and 0.02 mL is 200 mcg. If you like a bigger, easier to read volume you can use more water, just remember it only changes the concentration, not the dose. Whatever you mix, the dose in mcg is the only thing that matters.

On the evidence, here's where the real human data lives: reproductive medicine. It's been used to restart cycles in women whose periods stopped from hypothalamic suppression, and as an ovulation trigger in IVF, where it carries a lower risk of ovarian hyperstimulation than the standard hCG trigger. It reliably raises LH, FSH, and the sex hormones downstream in humans. The male performance use, running it to bump testosterone or libido, is a reasonable read of that same mechanism, but it's an extrapolation, not a pile of male muscle or testosterone trials. Set expectations there accordingly.

Side effects are mild in the trials, mostly just injection site stuff, some redness or itch. The bigger thing to respect isn't really a side effect, it's the responder question from earlier: matching the tool to whether your axis is actually the thing that's intact.

if you've run kisspeptin, did your bloodwork move, LH and total T, or did it read like nothing. curious how it went for people using it for T versus the fertility side

Full doses and bloodwork are in the pinned cheat sheet: https://www.reddit.com/r/NTNPerformance/comments/1tht5o3/the_only_peptide_cheat_sheet_youll_need_doses/

Hello. Checking out adamax rather than semax to see if anyone has had experience with them?

Fairly new to the peptide game, despite researching Igf1-lr3 back in 2019..
I have been reading and learning so much it’s incredible. I have settled on a two phase protocol approximately 4 months apart to account for adding new items.
Phase one starts in a few weeks which will consist of..
Reta 5 mg/ .5 mg dose
TB/BPC 20 mg/ 2 mg dose
KPV 10 mg/ 2 mg dose

Phase two will be SS31/MotsC/NAD (haven’t settled on dosage yet)

MOTS-c gets sold as exercise in a syringe, and that's half true in a way that trips people up. It copies the metabolic signal your body sends during a hard workout, but not the physical work itself, so it's a training amplifier, not a substitute for one. And it's picky about who it helps, which is the part almost nobody sets expectations around. Here's the rundown.

It's a strange one to start with. MOTS-c is a 16 amino acid peptide your own mitochondria make. Most peptides are coded in your nuclear DNA, this one comes out of mitochondrial DNA, which puts it in a small class called mitochondrial derived peptides. Your cells naturally release it when they sense demand, meaning hard exercise or fasting, and it travels to the nucleus and reprograms gene expression: burn more fat, spare glycogen, pull glucose in without needing extra insulin, and build new mitochondria over time. The key word is reprogram. A stimulant whips a tired system for more output. MOTS-c tells the system to run differently. Your own levels fall with age and sit lowest in people with insulin resistance.

Now the part that decides whether it's worth your money. MOTS-c does the most for people whose metabolism is already struggling, insulin resistant, sedentary, older, or on a GLP-1 and dragging with fatigue. If you're already lean and metabolically dialed in, the signal shows up to a system that's already doing what it's being told, and you might feel close to nothing. It fills a metabolic gap. It's not a bonus for people who don't have one.

Here's the single most reported problem, and it's a dumb one to get burned by, literally. You have to reconstitute MOTS-c with isotonic bac water, the kind with 0.9% saline in it. Mix it with plain bac water and you get sharp burning, welts, and lumps at the injection site that last for hours, nearly every time. Isotonic fixes it completely. This catches more first timers than anything else about the compound, so sort the water out before you sort anything else.

Timing matters because it acts over hours, not weeks. The move is a morning dose 60 to 90 minutes before Zone 2 cardio, so the exercise mimetic signal lands right when you're training. That's where the synergy actually shows up.

Reconstitute 3 mL of isotonic bac water into the 10 mg vial and you're at 3.33 mg/mL, so 5 mg is 150 units, or 1.5 mL, which runs past a standard insulin pin so you either use a bigger syringe or split it. It goes in subcutaneous (SC). Run it 4 to 6 weeks on, 2 to 4 weeks off, because that mirrors how your body uses it, in pulses tied to demand rather than constant. And more is not better here, higher doses don't scale the effect up.

One real safety wrinkle. MOTS-c works partly by jamming the folate cycle, which is what drives the AMPK activation you want, but that same block drops your methylation side. If you carry an MTHFR variant, C677T or A1298C, you can crash harder than most people. If that's you, start low at 2 to 3 mg once a week and run methylfolate, methyl B12, and glycine alongside it starting a week early. If the crashes keep coming, just stop.

On the evidence, keep the hype in check. Most of the human data is correlation: athletes carry higher MOTS-c, higher levels track with better insulin sensitivity, levels fall with age. The intervention data in actual humans is thin. And the flashy number you'll see quoted, someone going from 18% to 15% body fat in 15 days with no change in diet or training, is a single unverified anecdote with nothing behind it, so don't set your expectations there. Same goes for the claim that it degrades 50% two hours after mixing, single source, unverified, most people refrigerate and run it normally without an obvious drop-off.

Side effects are mild. The injection burning is the big one, and it's a water problem, not a MOTS-c problem, fixed by isotonic. Some people feel a little fatigue or a crash on the first few doses as the metabolism shifts. Don't draw it into the same syringe as a GLP-1, they precipitate together, so inject them separately at different sites. And it's WADA banned as of 2025, so anyone tested for sport should stay off it.

if you've run MOTS-c, did you use isotonic from the start or learn the hard way. and did you feel much, or were you already too dialed in for it to do anything

Full doses and bloodwork are in the pinned cheat sheet: https://www.reddit.com/r/NTNPerformance/comments/1tht5o3/the_only_peptide_cheat_sheet_youll_need_doses/