My supply (vials and pens)

Tell Tirzing what medication you have on hand and it works out your supply runway: roughly how many days of dosing you have left, and warns you before you run low.

Adding supply

1. Open My supply → Add supply.
2. Choose what you have: a vial, a vial with a blend, single-dose pens, or a multi-dose pen (KwikPen).
3. For a vial, enter its strength and size. For pens, enter the dose and how many pens you have. Add the expiry if you track it.
4. Save. The runway recalculates against your current dosing.

Prefilled pens

• Single-dose pens (like Mounjaro or Zepbound pens): enter the dose on the pen and how many you have, for example 4 pens of 2.5 mg. Each pen is one shot, so logging a shot from it marks it as used, whatever dose you log. The runway counts whole pens: 5 mg pens at a 2.5 mg dose last one shot each, not two.
• KwikPens (multi-dose pens): enter the dose per injection and how many doses each pen holds (4 for a Mounjaro KwikPen). Each shot takes its dose out of the pen, and the list shows how many doses are left.
• Pens have no syringe units and no overfill. Edit a pen to mark it used or unused by hand.

Scan a vial (fastest)

Short on time? On My supply tap Scan vial, take a photo of the front and the side/back of the label, and let the app read the strength, volume, BUD, compounding date and lot for you. You review and confirm every field before saving: usually you’ll only add the provider or pharmacy. If scanning is unavailable, you can always add a vial by hand. Reading a label is an estimate and can misread: always check it against the vial.

Punctures, dates & opening

• Punctures: the count of times the stopper has been pierced. It bumps up automatically each time you log a shot from the vial (and on a vial transition, both vials), and you can correct the number on the vial’s edit screen.
• Compounded date: for compounded vials. When two vials share a BUD, the one compounded earlier is used first.
• Open vial: a sealed vial has an Open vial button right on the list, so you can mark it open without editing.

Time-savers

• Overfill: many vials hold a little more than the label says; account for it so the runway isn’t pessimistic.
• Duplicate: got several identical vials? Add one, then duplicate it instead of re-entering.
• Edit or delete vials as you use them up or replace them.

Reorder reminder

Your dashboard shows a “Time to order more” warning when a medication is projected to run out soon. Set how far ahead it warns you under Preferences → Reorder reminder (default: 2 weeks before you run out).

B12 and other medicines measured in mcg

If a medication is logged in mcg, like Vitamin B12, its vial strength can be entered in mcg/mL or mg/mL, whichever your label shows (1000 mcg/mL and 1 mg/mL are the same). The vial then counts down in mcg, matching the doses you log.

Mixes taken by the mL (Lipo-C, Lipo-Mino-C, MIC + B12)

A lipo or MIC mix is the whole vial, not one ingredient, and it has no single strength. Add it with A vial of one medicine and pick or type its name: there is no strength to enter, you log each shot as the mL you draw, and your supply counts down in mL. If you start a blend and add the mix as an ingredient, Tirzing offers to set the vial up as that mix instead.

Listing what is in it is optional. Add the ingredients from the label if you want an estimated level for each one.

Blended vials (several ingredients in one)

Some vials hold more than one active ingredient, like Tirzepatide compounded with B12 or B6. When you add a vial, choose A vial with a blend and add each ingredient with its strength from the label, in mg/mL or mcg/mL. For each one you can pick an existing medication, add it as a new med/supplement right there (it gets a sensible half-life automatically, so it shows its own level curve), or leave it untracked as a name only.

Then say how you measure a shot:

• By an amount of one ingredient: log shots as the mg of the one you titrate, just like a normal medication. If a weight-loss medication is in the vial, it is picked for you. Every other ingredient’s amount, and the volume drawn, are worked out from it, so the B12 you get is tracked automatically without being a dosing target.
• By a volume in mL: for a mix with no weight-loss medication in it, log shots as the mL you draw. Every ingredient’s amount comes from that volume. This is where a blend without one starts.

A blend’s inventory is tracked by volume: each shot subtracts the mL it draws. One injection feeds every ingredient’s level curve at once. It isn’t several separate shots.