SLU-PP-332 dosage for capsules and vials

The chart has two kinds of rows, and they aren't the same kind of number. The capsule rows are what vendors print on the bottle page, and the mouse rows are what the published research used. Neither is a human dose from a study, because no human study exists. Background on what SLU-PP-332 is and what the mouse work found is on the SLU-PP-332 page.

SLU-PP-332 is a small lab-made molecule, not a peptide, which is why it comes in capsules at all. Most peptides would be broken down in the gut, and this one isn't a peptide to begin with.

Every published result comes from mice injected into the abdomen at 50 mg per kg of body weight, twice a day. Per kg means the amount scales with body weight. In the endurance study the mice were treated for 7 days before their treadmill test, and in the obesity studies for several weeks. Those amounts and schedules come from the developers' 2023 and 2024 mouse papers.

Mouse doses don't translate to people pound for pound, because small animals burn through drugs faster. The FDA's standard conversion from mouse to human divides the mouse dose by about 12. That conversion isn't a dose and nobody suggests using it. It's here to show the scale: the capsule amount of 250 to 500 mcg sits more than a thousand times below what the mice got, given by a route the mice never used.

That gap doesn't mean the capsule amount does nothing or that a higher amount would be better. It means the vendor figure and the research figure aren't describing the same thing, and anyone comparing them should know that.

Capsules are the form most vendors sell. They come at 250 mcg or 500 mcg each, in bottles of 30, 60 or 100. Vendor capsule pages give 250 to 500 mcg a day, taken once a day, and some vendor pages suggest starting with a single capsule. That's the whole of the human-facing guidance, and none of it traces back to a study.

Capsule counts are simple division of the vendor amount by the capsule strength. A capsule holds powder, so it can't be split accurately.

The open question with capsules is absorption. The researchers who made SLU-PP-332 describe it as lacking oral bioavailability, meaning little of it reaches the blood when swallowed, and they built a newer compound, SLU-PP-915, partly to fix that. No one has published how much of a 250 or 500 mcg capsule gets into a person. So the capsule amount isn't just untested, it's untested on a route the developers themselves flagged.

Some vendors sell SLU-PP-332 as a powder in 5 mg and 10 mg vials. With a peptide you'd mix the powder with bacteriostatic water, sterile water with a preservative so one vial can be drawn from more than once, and the math would give units on the syringe. SLU-PP-332 doesn't work that way. Chemical suppliers list it as insoluble in water and soluble in DMSO, a lab solvent, and the mouse studies dissolved it in a solvent mix before injecting.

That's why there's no units table on this page. A powder that won't dissolve in bacteriostatic water can't be measured out by the units on a U-100 syringe, and no source we trust gives either a mixing method or an injected amount for people. Some vendor pages describe mixing it with bacteriostatic water anyway, and that runs against the supplier data. If you're comparing vials, the reconstitution calculator handles the math for anything that does dissolve.

If a vial is mixed, it goes on the same 28-day clock in the fridge as any other mixed vial, starting the day liquid goes in.

Once a day on vendor pages. The capsule pages describe one daily amount, with no time of day attached.

Twice a day in the mice. The research schedule was two injections a day, which reflects how quickly mice clear the compound rather than anything about people.

No course length or break. No source sets how many weeks to take it or when to stop. The mouse studies ran from one week to a few months, and those were study lengths, not courses.

Time of day. No study or label sets one, and vendor pages don't name one either.

With capsules the math is just the count divided by how many you take a day. A 30-count bottle of 250 mcg capsules lasts 30 days at 250 mcg a day and 15 days at 500 mcg. A 60-count bottle of the same capsules lasts 60 days or 30 days. A 100-count bottle of 500 mcg capsules lasts 100 days at 500 mcg a day.

Because capsule strength and count vary so much, the price of a bottle tells you little. Compare on price per milligram: a 30-count bottle of 250 mcg capsules holds 7.5 mg in all, a 60-count holds 15 mg, and a 100-count of 500 mcg capsules holds 50 mg. A 5 mg vial holds 5 mg and a 10 mg vial holds 10 mg, so on paper one 10 mg vial carries as much as 40 of the smaller capsules.

Small amounts make testing matter more. A 250 mcg capsule is a quarter of a milligram of powder, usually mixed with filler, so you can't judge it by eye or by weight in your hand. Before buying, look for a vendor that posts a third-party test for that batch showing the compound's identity, meaning the powder really is SLU-PP-332, and its purity. A test on the raw powder is good, and a test on the finished capsules is better, since it also shows each capsule holds what the label says.

Price per milligram also makes the capsule-versus-vial question easier to see. A vial packs far more milligrams into one container, but it comes with the mixing problem above, while capsules come ready to take. Neither form has been tested in people, so the comparison is about what you're buying, not about which one works better.

For storage, chemical suppliers keep the dry powder in the freezer at about -4°F (-20°C), where they list it as stable for years. Vendor capsule pages vary, so follow the label on the bottle you buy.

SLU-PP-915 is a different molecule from the same lab, made to work when swallowed. In a 2026 mouse study it matched SLU-PP-332's endurance effect given by mouth. Amounts don't carry over between the two, and neither has a human dose behind it.

People who take SLU-PP-332 often look at MOTS-c for similar reasons, and its amounts are on the MOTS-c dosage page. No source sets a combined schedule for the two.

There aren't enough consistent reports yet to describe a pattern. Forum posts are scattered and mostly say people noticed little either way, which fits a compound the developers say absorbs poorly by mouth. These are the things people say they watch for.

A racing heart or feeling overheated. In the developers' mouse studies it raised whole-body energy use, working through receptors that are busiest in heart and muscle. Some people report stopping when it happens, which is reported use rather than studied.

Stomach upset after a capsule. Some people report taking it with food when this happens. It's reported, not studied.

Redness, a lump or pain where you injected, for anyone using a vial. With a powder that doesn't dissolve in water, people who get a lump that lingers stop and get it looked at.

No human safety data exists for SLU-PP-332, and the open questions are set out on the SLU-PP-332 page. If you're comparing it with another compound bought for metabolism, the 5-Amino-1MQ dosage page covers the one people most often weigh it against.