Happy Friday, Friends! 👋
Week two of the recap. A quieter week in the free community (about 75 new posts and 1,000 comments, not counting the counting game), but the best member thread of the week was bigger than anything from last week. Inside: Jamey's explainer on why Reta is not Tirz 2.0, how a vial actually gets tested before it reaches you, the storage basics a lot of you asked for, and my new video on backfilling a syringe so your dog or cat gets one pin instead of three. My own posts are left out on purpose. Let's get into it.
Not in the community yet? Every link below lands inside the free group:
🎬 New Video: How To Backfill a Syringe (One Pin for Your Dog or Cat)
A few of you asked about this after the animal threads, so I filmed it. Backfilling means loading the syringe from the back instead of drawing your dose through the needle you inject with. Why bother: the pin that goes into the skin stays sharp because it never went through a rubber stopper, and for a dog or a cat that means one poke instead of several. The second half walks through a safe subcutaneous injection on a dog. Under four minutes, no fluff.
🐾 Before you press play
This video is for educational purposes only. It is not veterinary advice. Talk to your vet before you do anything with your dog or cat, and follow their guidance over anything you see here. The mechanics are the same as for people, the biology is not.
Research Use Only! ⚠️
🔁 Did You Miss This? The 5 Threads That Got the Group Talking
Ranked by how much you all liked and commented, not by me.
1. "Why Reta isn't Tirz 2.0, and why combining them may not be the answer"
Jamey wrote the post I had been meaning to write, and did it better. The short version: Sema, Tirz and Reta are not stacks of separate keys. Each one is a single key cut to fit several locks, and every extra lock costs some precision on the others. Reta kept GIP and added glucagon, so GLP-1 gave up the most, and GLP-1 is the part that quiets food noise. What you get instead is the spending side: energy expenditure and fat mobilization tick up, and you cannot feel either of those. So hunger creeping back on Reta is not the peptide failing. It is a different job with a lower awareness component. Cindy asked about inflammation in the comments and Jamey came back with trial CRP numbers (same ballpark for both).
2. "189 in January, 136 in September, and every number on the labs is green"
Jamie posted twice this week and both earned the spot. Face to Face Friday is the side by side, January to September. Go Big Green is the lab printout she has been waiting for since she started a GLP-1 in November, all green, and she shared her full stack so you can see what "showing up week after week" looked like in practice. I am NOT claiming her results are yours. I am saying consistency is boring, and boring works.
3. "How does a vendor actually test a batch?"
Isabelle asked how the vetting works before placing her first Skye order, and this is one I answered in full. The short version: the raw peptide gets tested several times, internally and by an outside lab, then it is vialed and freeze-dried in the US, then random vials from each finished batch (usually three) get tested again. That last step is the whole point. Testing the powder tells you nothing about what ended up in your vial. Christiane added a practical tip: Skye overfills most vials, so when a COA shows three values, average them and use that in your math.
4. "I pulled my lower back deadlifting. Will this set me back for months?"
Jennifer strained her low back three weeks after finishing a KLOW cycle and was worried about losing her training progress. The replies were a mini masterclass. Restart the repair stack now rather than waiting, BPC-157 and TB-500 together, and check whether your "KLOW" actually contains TB-500 or a TB4 fragment, because labels differ by vendor. Cindy's line stuck with me: do not wait, your body builds compensation patterns that show up somewhere else later. Reading a thread is not a protocol. Get someone who can actually look at your back.
5. "What's your favorite stack, and why?"
Laura wanted energy for the gym and lean muscle without bulking up. The answers were less exciting than you might expect, which is the point. Tirz on maintenance every 14 days, MT1, KPV or KLOW for inflammation, Vesugen and Cartalax for the joints. Nobody listed nine vials. The members who have been at this the longest run the shortest lists.
Also worth a scroll:
💵 "My provider wants $450 for Tirz. How do I tell her I'm sourcing it myself?" Julie's thread, 15 comments, and the consensus was "just say you cannot afford it, nothing else needs to be said."
🌸 Tesamorelin for women and visceral fat. Heather waited until she was near goal weight and paired it with Ipa; Christiane's slow ramp for women is in there too.
🦴 PRP for hip pain. Honest, mixed experiences. "Worked until it didn't" came up twice.
😴 Does it get worse before it gets better? A month in with a lot of vials going. Christiane's answer: that is a lot of signals at once.
🧪 Does AOD-9604 need acetic acid instead of BAC water? Depends where it came from. Skye's is pH adjusted before vialing (regular BAC water, 6 mg vial plus 4 mL), Limitless ships the solution with it.
Research Use Only! ⚠️
❓ Best Questions of the Week, Answered
These came up more than once, so they get a proper answer here.
"The label says 24 mg/mL with 2.5 mL and 60 mg/mL with 1 mL. Am I still getting 15 mg?"
Diana asked that one, Jillian asked the cousin of it (a 40 mg vial that only holds 3 mL), and Kandi and Thang asked how much water to add in the first place. Yes, you are still getting 15 mg. The water changes the concentration and the number of units you draw. It never changes the dose.
Jillian's example, worked: 40 mg vial, 3 mL of water = 13.33 mg per mL. Her dose is 2 mg. 2 ÷ 13.33 = 0.15 mL, which is 15 units. Before, at 10 mg per mL, the same 2 mg was 20 units. Same dose, fewer units, nothing else changed.
Rule of thumb: keep the concentration you are used to when the vial has room for it. When it does not, do the math once, write the new units on the label, and stop thinking about it.
Do not want to do the math? That is exactly why the calculator exists.
"I left my reconstituted peptides on the counter overnight. Are they trash?"
Kellie asked, and the honest answer is probably not. Our own storage article gives a conservative 24 to 48 hours at room temperature for a reconstituted vial, and a couple of members pushed back in the thread with the view that most peptides lose very little in a single night. One night on the counter is not a week in a hot car. Put them back in the fridge and look: clear, no particles, no color change. If it looks the same and pins the same, carry on. If you left it in the car for a weekend, that is a different conversation.
Related, from Amy: how do I store a peptide nasal spray? Once it is mixed, fridge, same as a vial. The amber or dark blue bottle takes care of the light. Powder you will not touch for three months or more goes in the freezer, dark and dry.
Debbie read that somewhere and got confused, because they sit together in every KLOW blend. Vickie asked about Cartalax, KPV and GHK-Cu in one syringe, and Bernadette about vitamin C and glutathione in one vial. Three questions, one distinction: same syringe at pin time is one thing, same vial for weeks is another.
Same syringe: common practice. Draw them one after another into one syringe (Christiane's order for that trio: GHK-Cu first, KPV, then Cartalax) and push a syringe of air into each vial first so the vacuum does not fight you.
Same vial for storage: the cautious answer is no, unless the two were stabilized and pH adjusted together before mixing. It is not about whether they "get along" in the body. Each one is stable at a different pH and for a different length of time, and in one vial the fussier one sets the clock for both. That is also why a manufactured blend like KLOW is different from your kitchen counter: it was formulated and freeze-dried as one product. Vitamin C and glutathione: keep them apart. Vitamin C is acidic and glutathione is delicate.
"How long should I wait before adding a new peptide?"
Jackie asked, and this is where I get boring. It is not a number of weeks, it is a rule: one compound at a time, at one tenth of the planned dose, and wait until it is boring (usually a couple of weeks) before the next one. Debbie's thread above is what the other road looks like: a month in, six things going, more tired and achy, and no way to know which one is doing what. Erika asked how you would even know if you were allergic to something. This is how. One variable at a time. If you missed it, that was the whole point of the EP10 email two weeks ago.
Research Use Only! ⚠️
📈 What Everyone Was Talking About
Out of roughly 66 member posts this week:
Reconstitution, concentration, mixing and storage were about 1 in 4 posts. Water amounts, a vial too small for the usual concentration, "does the label concentration change my dose", what can share a syringe, what can share a vial, vials left on the counter, nasal sprays. Hence the Basics block below.
GLP-1s (Reta, Tirz, Cagri) about 1 in 6. Jamey's explainer, switching from Tirz to Reta without titrating down, what the GLP names even mean, a site reaction after ten months on the same vendor, and the provider-pricing thread.
GH axis and energy: Tesamorelin for women (twice), 5-Amino-1MQ tablets vs capsules, CJC/Ipa blends, DAC or no DAC, SLU-PP-332 vs 915, AICAR.
Healing and pain: the back strain, PRP, how long to cycle off KLOW, KPV for sciatica, BPC capsules, and 40 years of hairdressing and house cleaning showing up in the fingers and knees.
Glutathione had six threads of its own: where to buy it, how much water (for a 1500 mg vial the group standard is 7.5 mL), dosing ramps, and one reaction.
Sourcing: how vendors test, purity testing in the UK and EU, and "did Skye reduce the discount?" (no, see Before You Go).
Christiane answered 156 of your comments this week. Sue, Cindy, Heather and Jackie were right behind her. If you learned something in the group lately, you probably know who to thank. 🙏
🧪 EP Basics: Storage (Powder vs Liquid, Fridge vs Freezer, Labels)
Week two of the rotating block. Last week was reconstitute, draw up, inject. This week, where everything lives when you are not using it. This is the mechanical part, not a dosing guide. (Not advice, just how it is done.)
Part 1: Powder (unmixed vials)
Split your stock in two. What you will mix in the next 2 to 3 months goes in the fridge. Everything else goes in the freezer. Powder is the stable form, so the freezer is where the long-term stock lives.
Light and moisture are the two enemies. A sealed container with a desiccant pack, or a thermos with inserts. Not loose vials on a fridge shelf where the door light hits them every time you open it.
Take out only what you need, and let a frozen vial reach room temperature before you open it. Cold glass in warm air makes condensation inside the vial, and that is the moisture you were trying to avoid.
No freeze, thaw, refreeze. A vial makes one trip out of the freezer. If you pull it, it stays out.
Part 2: Liquid (reconstituted vials)
Once water is in, it lives in the fridge, not the freezer. Upright, capped, out of the light. A small box or a thermos in the fridge door works.
Label it the moment you mix it: name, date mixed, mg per mL, and the units you draw. A pen and the sticker on the vial is fine. I use a Dymo because I am that person.
Liquid is weeks, not months. Every time you draw, look: clear, no particles, no color change. If any of those change, it is done.
Bac water gets the same treatment. Cool dark cupboard, swab the stopper, write the date you opened it on the vial.
Part 3: The "oops" list
Left on the counter overnight: back in the fridge, inspect, carry on (see Kellie's question above).
Hot car for a day: assume the worst.
Frost inside the container: moisture got in. Add a desiccant pack and check the seal.
Cannot remember when you mixed it: that is what the label was for. Next time.
Research Use Only! ⚠️
⏰ Before You Go
No live sale this week, but Annie asked in the group whether Skye reduced their discount, so for the record: the community code at Skye was 10% for years and is currently sitting at 15%. Whether that stays is up to Skye, so enjoy it while it lasts. Same codes as always: Skye code Exploringpeptides, Scantifix code Exploringpeptides (15% there too), Limitless code EP20, and for Canada BioSlab code EP10. At Skye, Exploringpeptides always gets you the max perks (priority shipping, free BAC water if you ask in the order notes, the occasional freebie) and it supports the community, so it beats any generic code even when one shows up during a sale.
And if this recap was useful, hit reply and tell me. If something was wrong, or a thread you loved got left out, tell me that too. Week two is still early enough to change the shape of it.
❄️ My Long-Term Storage Approach
(Not advice, just my own system for research peps.) I've shared this before, but it's worth revisiting, especially with storage being the Basics topic this week:
2 to 4 × HydraPeak 32oz thermoses with peptide inserts
2 to 3 of them for freezer storage (1 to 3 years)
One for fridge storage (6 to 12 months)
Everything labeled, rotated, and calmly managed
I use a Dymo labeler, but tons of labeling machines work great for this. You can also just use a pen and mark the sticker on the vial. Anxiety-free prep! ❄️
⚠️ Research Use Only.
Disclaimer: This email is provided for informational purposes only and does not constitute medical or veterinary advice. Products discussed are intended for research use only, are not approved for human consumption, and should be handled in accordance with applicable laws and regulations. Community threads are member experiences, not recommendations, and nothing here is a protocol to follow. Decisions about hormones, medications, bloodwork, pregnancy, or any health condition belong with a licensed clinician.
Have a great weekend, Friends! 💦
Stay Curious 🕵️
Tk - Exploring Peptides