The Peptide Directory

Titration vial planner (total mg and vials for a stepped schedule)

Last updated . Reviewed by The Peptide Directory Editorial Team

Four steps of 4 uses at 0.25, 0.5, 1 and 1.7 mg total 13.8 mg, which is two 10 mg vials (rounded up).

Also called: titration calculator, escalation schedule calculator, vials needed calculator.

Calculator

Result

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Reference chart

Vials needed = total mg ÷ vial size, rounded up (before dead-space loss).
Total mg needed5 mg vials10 mg vials15 mg vials30 mg vials
51111
102111
13.83211
204221
306321
5010542

Totals for the FDA-label escalations

Worked totals for the first four four-week steps of each label schedule we reproduce (four weekly uses per step). They show the arithmetic, not a recommendation.

Total mg over 16 weeks at the fastest label escalation
ScheduleSteps (mg)Total mg
Semaglutide 2.4 mg0.25 → 0.5 → 1 → 1.713.8
Tirzepatide 15 mg2.5 → 5 → 7.5 → 10100

Worked example

Example: 4 uses each at 0.25, 0.5, 1 and 1.7 mg → 1 + 2 + 4 + 6.8 = 13.8 mg → two 10 mg vials.

How it works

  1. 1. List each step

    For each step, enter the amount per use (mg) and how many uses it covers.

  2. 2. Add up

    Total mg = sum of (amount × uses) across steps.

  3. 3. Vials

    Vials = total mg ÷ vial size, rounded up.

Frequently asked questions

How many vials do I need for a titration schedule?

Add up amount × uses for each step, divide by the vial size and round up. This tool does that arithmetic for a schedule you already have.

Where do titration schedules come from?

Approved drugs have schedules in their FDA labels; trial drugs have schedules in published trial designs. Our protocol pages reproduce those with sources.

Does this recommend a schedule?

No. It sums numbers you enter.

Sources

  1. Reconstitution, units and concentration arithmetic: see our lab-handling guide, The Peptide Directory

Label and trial dose references

For doses as printed in FDA labels or used in trials, see the peptide dose reference and the protocol pages.

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