Research · product model

Cycles, stacks & terminology

This page summarizes how PepRally groups plans and peptides: what a cycle is, how stacks fit inside it, and the supporting words we use for timing and amounts. For research record-keeping only; not medical guidance.

Relationship map

At the highest level, planning revolves around a single container: the cycle. Optional programs group multiple cycles over time; inside each cycle, one or more stacks group peptides you use together.

Program (optional)

Multiple cycles over time — useful when you think in seasons or phases, not a single block.

Cycle

Your full plan for a defined period: what you are tracking, how much, when, and how long. In product terms, this merges what might otherwise be called a protocol and the lived schedule into one concept.

Stack(s)

Grouped peptides used together for a purpose (for example cognitive vs sleep) or a time window (AM vs PM). A cycle can have one stack or several.

Cycle = protocol (merged). Instead of juggling two separate ideas, think of the cycle as the place where plan and execution live together.

Ways to structure stacks

Both patterns are valid; pick what keeps your own records clear.

By purpose

Sleep stack (e.g. DSIP)
Cognitive stack (e.g. Semax + Selank)
Recovery stack

By timing

Morning (AM) stack
Evening (PM) stack

Supporting terms

These refine a cycle; keep them lightweight in your own notes.

Dose

Amount per administration (for example micrograms).

Frequency

How often — daily, twice daily, etc.

Duration

Total length of the cycle (for example several weeks).

Washout

Time off between cycles.

Pulsing

Intentional breaks within a cycle (for example several days on, several off).

One-line definitions

Cycle — the full plan over time.
Stack — the peptides grouped together inside that plan.
Blend — a single vial containing multiple peptides combined at specific milligram amounts. Blends are scheduled and dosed just like individual peptides.

Example

“I'm running a six-week cycle: AM cognitive stack (Semax + Selank), PM sleep stack (DSIP), daily dosing, then two weeks off.”

Cycle — six weeks plus washout.
Stacks — AM and PM groupings.
Structure — daily use with time off between cycles.

Key takeaway

Think in cycles (the plan).
Organize with stacks (the groupings).
Keep dose, frequency, duration, washout, and pulsing as simple supporting details.

Research hub · Log dose calculations — how microgram amounts relate to vial concentration, draw volume, and U-100 syringe units in the app.