Questions people search, answered with sources.
Short articles on peptide and GLP-1 tracking for women: cycles, side effects, vial math, and the record you bring to a clinician. Educational only, every health claim cited, no dosing advice.
4 min read
Can semaglutide or tirzepatide affect your period?
Neither the semaglutide labels nor the tirzepatide labels list menstrual changes as an adverse reaction, but women do report cycle changes on both. The best-supported explanation is the weight change itself, which can shift a cycle on its own, and a 2026 analysis of safety reports adds a signal that nobody has yet explained.
4 min read
How long does a reconstituted peptide vial last in the fridge?
There is no single answer, because stability belongs to the peptide and its label, not to the water. The 28 days quoted everywhere is a rule for an opened multi-dose vial, and the FDA labels of real reconstituted peptides range from "use immediately" to 28 days refrigerated, so the number that governs your vial is the one printed for your product.
5 min read
What should a peptide tracker app actually record?
The things a clinician or pharmacist will ask about: what was taken, how much, from which vial at what concentration, when, where it went, and what happened afterwards. Everything beyond that is a convenience, and how the app stores the record matters as much as what it holds.
4 min read
Where do you inject semaglutide, and how often should you rotate?
Under the skin of the abdomen, thigh, or upper arm, according to the Wegovy and Ozempic labels, and at a different spot for every dose. Exposure is the same from all three regions, so rotation is about protecting the tissue, not about getting more or less of the drug.
4 min read
Why do GLP-1 side effects feel worse before your period?
No study has measured GLP-1 side effects by cycle phase, so there is no proven answer. What is known is that these drugs slow stomach emptying, and that several studies find gut transit also slows in the luteal phase, the week or so before a period, so for some women the two effects may stack.
4 min read
Why does the scale jump before your period on a GLP-1?
Mostly water. Women measured across their cycles gain about half a kilogram, roughly a pound, around menstruation, and the gain is extracellular fluid rather than fat, so a single reading in that window says little about the trend underneath it.
Track it where it stays yours.
Protocol Her keeps doses, vials, symptoms, cycle, and labs in one place, with the reconstitution calculator and a live U-100 syringe gauge built in. Free to download, no account to create.
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