What goes together.
Pick what you are considering. See what our protocols pair, and never pair.

What you need
The names you are considering.
Before you start.
- This tool tells you what the engine behind every protocol here does with a set of compounds: what it pairs, what it never runs together, and what a medical flag removes.
- Have the names of the compounds you are thinking about. Tick any medical flags that apply to you.
- You get plain statements about how our protocols are built. No doses, no verdicts.
Compounds
Medical flags, if any apply
ยท
Pick two or more compounds.
The checker says what the engine behind every protocol here would do with them.
What the protocols never do
- CJC-1295 + Ipamorelin and Tesamorelin: both work on the growth hormone axis; stacking them doubles the cost and hides which one did anything.
- Semax and Selank: alternatives for focus, chosen by the quiz from your answers, not run together.
- Retatrutide and Tirzepatide: the same class of fat-loss compound; running two is a dosing error, not a stack.
- KLOW Blend already contains BPC-157, TB-500 and GHK-Cu; buying them separately beside it is paying twice for the same molecules.
- GLOW Blend already contains BPC-157, TB-500 and GHK-Cu; buying them separately beside it is paying twice for the same molecules.
- DSIP is not added beside CJC-1295 + Ipamorelin when the pairing is already in the protocol; it deepens the part of the night DSIP works on.
Nothing you enter here leaves your phone.
What to do with the number.
If the checker says two things never run together, take one out; the reason is on screen. If it names a pairing our protocols build, that is the shape the quiz would give you.
If a flag removes something, that is a fact about the protocol, not a diagnosis; it is what the results sheet would do with your answers.
Try it with an example.
Tap a pair that our protocols never run together and read why. The compounds and flags are the only inputs.
Facts, not rulings.
The checker does not decide anything. It reads the engine that builds every protocol on this site and reports what that engine does: which compounds it treats as one class and never runs together, which it pairs for each goal, which order rule it applies inside a build, and which compounds a medical flag removes rather than warns about. The removals are found by building every goal with and without each flag and comparing what comes back.
Nothing here is a dose, and nothing here is a verdict on a combination the engine does not know about. It is how our protocols are built, said plainly.
Questions
Can I take two of these together?
Pick both and read what appears. The protocols here run one compound from each class and never two of the same, and the checker says which pairs are which.
Where do these rules come from?
From the engine that builds every protocol on this site. The checker reads it rather than restating it, and the removals are found by building every goal with and without each flag.
Does this replace asking a doctor?
No. It says what our protocols would and would not do. A doctor who knows your history is the person who says what you should do, and the sheet is built to be taken to them.
Why is a blend listed with its own contents?
Because buying one of them separately beside the blend is paying twice for the same molecule. The checker names the contents from the catalogue.
What if I do not know what I am considering yet?
Take the quiz. It builds a protocol from your answers, and the stacking guide explains the pairings by goal.
Three minutes. Built from your answers.
Get startedRelated
Nothing you enter here leaves your phone. Longevity Manila builds your protocol from your answers. Fulfilment is by Primara Labs, our partner and supplier. Take it to a doctor who knows you before you begin.
Built into every protocol.
Fourteen questions, and the protocol arrives with the numbers this tool asks for already filled in.