How to Log a Peptide or GLP-1 Dose So You Can Trust the Record

A dose log becomes trustworthy when it records the injection you gave in enough detail to rebuild the arithmetic. Six fields do that: compound, vial concentration, volume drawn, milligrams delivered, time, and site. Write them at the moment of injection and the record answers questions months later.

Most logs fail because the entry captures a conclusion, such as "0.25 mg", without the inputs that produced it.

The six fields that make an entry checkable

A checkable entry lets a second person verify it without asking you anything. It holds both the measurement you made and the context that gives the measurement meaning.

Two optional fields earn their place: needle gauge and length, which affect comfort and depth, and a free-text note for anything unusual. The notes field is where the useful surprises end up.

Record volume and concentration, not milligrams alone

Milligrams are derived. The derivation depends on a concentration that lives nowhere except your record.

Take a 5 mg vial mixed with 2 mL of water, which gives 2.5 mg/mL. Drawing 10 units on a U-100 syringe is 0.10 mL, which is 0.25 mg. Now suppose the next vial was mixed with 1 mL, giving 5 mg/mL. The same 10 units is still 0.10 mL, but now it is 0.5 mg. A log that says "0.25 mg" for both weeks looks consistent and is wrong for one of them. A log that says "10 units from a 2.5 mg/mL vial" and then "10 units from a 5 mg/mL vial" shows the change at a glance. The reconstitution math guide covers the conversion.

Write the numbers the way the Institute for Safe Medication Practices recommends: a leading zero before a decimal point, no trailing zero after one, and units spelled out. "0.25 mg" is unambiguous. ".25 mg" reads as 25 mg to a tired eye, and "250 ug" invites a misread of the microgram symbol.

Timestamp the event, not the plan

The timestamp should come from the injection, not from your schedule for the day. Apps that let you plan a dose and mark it done later drift, because "done" gets tapped on the commute or at bedtime and the recorded time becomes fiction.

Interval matters for anything taken on a fixed cadence. A record that shows a dose on Sunday morning and the next on Friday evening describes a five-day interval, and only an accurate timestamp reveals it. When you cannot log at the moment, log later and correct the time field to the real event instead of accepting the default.

The fields people skip

Site and vial identity get skipped because they feel like paperwork. Each one answers a question you will eventually ask.

• Site. Without it you cannot rotate on purpose, and you cannot connect a lump or lingering redness to how often that area was used. The site rotation guide explains why that matters.
• Vial identity. When two vials of the same compound are open, or one is nearly empty, the entry needs to say which one you drew from.
• Lot number and expiration. If a supplier issues a recall or a batch behaves differently, the lot is the only field that lets you find the affected doses. Keep it on the vial's record. See the vial inventory guide.

Partial doses, misses, and waste

Log what happened, including the unflattering version. Three cases recur and each has a clean way to record it.

A partial delivery, where the needle backs out or solution leaks at the site, is recorded as the volume delivered plus a note. "About 7 of 10 units, leaked at site" is more useful than a clean 10 that overstates the dose.

A missed dose is an explicit entry with a reason: travel, illness, out of solution, clinician's instruction. An empty day is ambiguous, and ambiguity is what makes people stop trusting their own records.

Waste, such as a primed syringe that was dropped, matters for inventory rather than dose. Recording it keeps your remaining-volume math honest so a vial does not run out early for no visible reason.

Fast enough to survive a bad week

A log only works if it takes less effort than skipping it. Fifteen seconds is a workable target, and reaching it means removing typing, not adding discipline.

Default the compound and vial to your last entry. Default the volume to your usual draw. Suggest the next site from your rotation instead of asking you to pick. Timestamp automatically. Put the whole thing on one screen. Vitadel Protocol is built around that shape: the concentration lives on the vial, the dose is computed from it, and the next site is suggested from your rotation. Whatever tool you use, the test is the same. Can you complete an entry one-handed, half awake, at 6 AM?

Review a month of entries

Read your log now and then, or the fields are collected for nothing. A monthly review takes a few minutes and looks for four patterns.

1. Interval drift. Are doses landing where you intended, or has the cadence slid by a day or two?
2. Site clustering. Is one area taking most of the injections while another goes unused?
3. Concentration changes. Did a new vial change the units you draw, and did the log capture that on the day?
4. Note clusters. Do the free-text notes gather around one site, one vial, or one time of day?

None of that tells you whether your protocol is right for you, which is a clinical question. It tells you whether the record describes reality.

Export and hand-off

Assume someone else will read your log. A clinician, a pharmacist, or you in eighteen months will need dose, dates, and any interruptions without a decoder key. That means no personal shorthand, explicit units, and the ability to export a date range as a document rather than a screenshot. Vitadel Protocol exports PDF for a clean summary, CSV for a spreadsheet, and JSON for a backup you can import back later.