# Side-effect tracking

> What the labels say about each GLP-1 side effect, when it tends to show up, and how to log it against every dose.

Source: https://peppytracker.com/side-effects/
Last updated: 2026-09-02

## [Nausea on GLP-1s: what to track, when it tends to show up, and how to log it](https://peppytracker.com/side-effects/nausea/)

GLP-1 nausea is the most-listed side effect on the Wegovy, Ozempic, Mounjaro and Zepbound labels. What to log, when it peaks, and how to track it in Peppy.

## [Constipation on GLP-1s: what to track, when it tends to show up, and how to log it](https://peppytracker.com/side-effects/constipation/)

GLP-1 constipation is listed on the Wegovy (24%), Zepbound (11-17%) and Saxenda (19%) labels. What to log day to day, red flags, and how to track it in Peppy.

## [Sulfur burps on GLP-1s: what to track, when they tend to show up, and how to log them](https://peppytracker.com/side-effects/sulfur-burps/)

Sulfur burps (eructation on the labels) are listed for Wegovy (7%), Zepbound (4-5%) and Saxenda (4.5%). When they show up, what to log, and how to track them in Peppy.

## [Food noise on GLP-1s: what to track, when it changes, and how to log it](https://peppytracker.com/side-effects/food-noise/)

Food noise is the constant background thinking about food that many people say GLP-1s quiet. It is not on any label. How to score it 1-5 and track it in Peppy.

## [Heartburn on GLP-1s: what to track, when it tends to show up, and how to log it](https://peppytracker.com/side-effects/heartburn/)

GLP-1 heartburn shows on the labels as GERD (Wegovy 5%, Zepbound 4-5%) and dyspepsia (up to 10%). When it hits, what to log, and how to track it in Peppy.

## [Diarrhea on GLP-1s: what to track, when it tends to show up, and how to log it](https://peppytracker.com/side-effects/diarrhea/)

GLP-1 diarrhea is the second most-listed reaction: Wegovy 30%, Zepbound 19-23%, Saxenda 21%, Mounjaro 12-17%. What to log, dehydration red flags, and tracking in Peppy.

## [Fatigue on GLP-1s and peptides: what to track, when it tends to show up, and how to log it](https://peppytracker.com/side-effects/fatigue/)

GLP-1 fatigue is on the Wegovy (11%), Saxenda (7.5%) and Zepbound (5-7%) labels. When it tends to hit, what to log next to energy and sleep, and how to track it in Peppy.

## [Headache on GLP-1s and peptides: what to track, when it tends to show up, and how to log it](https://peppytracker.com/side-effects/headache/)

GLP-1 headache is on the Wegovy (14%) and Saxenda (13.6%) labels and is commonly reported with GH-secretagogue peptides. What to log and how to track it in Peppy.

## [Injection site reactions on GLP-1s and peptides: what to track, where, and how to log them](https://peppytracker.com/side-effects/injection-site-reaction/)

Injection site reactions range from 0.2% (Ozempic) to 6-8% (Zepbound) and 13.9% (Saxenda) on the labels. What to log per site and how to track it with Peppy's body map.

## [Bruising at the injection site: what to track, which sites bruise, and how to log it](https://peppytracker.com/side-effects/bruising/)

Bruising after a GLP-1 or peptide shot is listed as an injection site reaction on the Zepbound and Egrifta labels. What to log per site and how to track it in Peppy.

## [Suppressed appetite on GLP-1s: what to track, when it tends to show up, and how to log it](https://peppytracker.com/side-effects/suppressed-appetite/)

GLP-1 appetite suppression is the intended effect and, on the Mounjaro label, a listed side effect (5-11%). What to log so you can tell useful from too much, and how to track it in Peppy.

## [Insomnia on peptides and GLP-1s: what to track, when it tends to show up, and how to log it](https://peppytracker.com/side-effects/insomnia/)

Insomnia is listed on the Saxenda label (2.4% vs 1.7%) and reported by many people on growth-hormone peptides. What to log against shot time and how to track it in Peppy.

## [Vomiting on GLP-1s: what the labels say, when it tends to show up, and how to track it](https://peppytracker.com/side-effects/vomiting/)

GLP-1 vomiting is on every label: Wegovy 24%, Zepbound 8-13%, Saxenda 15.7%, Ozempic 5-9.2%. When it hits, what to log, and how to track it in Peppy.

## [Belching on GLP-1s: what the labels call it, when it shows up, and how to log it](https://peppytracker.com/side-effects/belching/)

GLP-1 belching is listed on the labels as eructation: Wegovy 7%, Zepbound 4-5%, Saxenda 4.5%, Mounjaro about 3%. When it starts, what to log, and how to track it in Peppy.

## [Indigestion on GLP-1s: what the labels call it, when it shows up, and how to track it](https://peppytracker.com/side-effects/indigestion/)

GLP-1 indigestion is listed on the labels as dyspepsia: Wegovy 9%, Zepbound 9-10%, Saxenda 9.6%, Mounjaro 5-8%, Ozempic 2.7-3.5%. When it hits, what to log, and how to track it in Peppy.

## [Stomach pain on GLP-1s: what is expected, what the labels warn about, and how to track it](https://peppytracker.com/side-effects/stomach-pain/)

GLP-1 stomach pain is listed on every label as abdominal pain: Wegovy 20%, Zepbound 9-10%, Ozempic 5.7-7.3%, Mounjaro 5-6%, Saxenda 5.4%. The pancreatitis red flag, what to log, and how to track it in Peppy.

## [Dehydration on GLP-1s: why the labels warn about it, what to watch, and how to log it](https://peppytracker.com/side-effects/dehydration/)

GLP-1 dehydration is a label warning, not a percentage: vomiting and diarrhea leading to kidney injury. Signs, what to log, and how to track it in Peppy.

## [Low blood sugar on GLP-1s: what the labels say, who it mostly affects, and how to log it](https://peppytracker.com/side-effects/low-blood-sugar/)

GLP-1 low blood sugar is rare alone (Ozempic 1.6-3.8%) but up to 29.8% with insulin; Wegovy 6% in T2D. What to log and how to track it in Peppy.

## [Dizziness on GLP-1s: what the labels list, what usually sits behind it, and how to log it](https://peppytracker.com/side-effects/dizziness/)

GLP-1 dizziness is on the labels: Wegovy 8% vs 4%, Zepbound 4-5%, Saxenda 6.9%. Often dehydration or under-eating. What to log and how to track in Peppy.

## [Increased hunger: late-week hunger on GLP-1s, the hunger that comes with GH peptides, and how to log both](https://peppytracker.com/side-effects/increased-hunger/)

Increased hunger: appetite returning late in a GLP-1 week or after a missed dose, and the hunger many report on ipamorelin, GHRP-6 or MK-677. Log in Peppy.

## [Migraine on GLP-1s: what the labels actually list, likely triggers, and how to log it](https://peppytracker.com/side-effects/migraine/)

GLP-1 migraine is on no label; headache is (Wegovy 14% vs 10% placebo). Why fluids and skipped meals matter, what to log, and how Peppy tracks it.

## [Mood swings on GLP-1s and peptides: what the labels say, what to log, and when to call](https://peppytracker.com/side-effects/mood-swings/)

GLP-1 mood swings: the labels list little, and the suicidal ideation warning was removed in 2026. What to log in Peppy and when to call your prescriber.

## [Metallic taste on GLP-1s: what the labels call it, when it shows up, and how to log it](https://peppytracker.com/side-effects/metallic-taste/)

GLP-1 metallic taste is dysgeusia on the labels: Wegovy 1.7%, Zepbound 0.4%, Mounjaro 0.1%. What to log, when to call, and how to track it in Peppy.

## [Hair loss on GLP-1s: what the labels say, when it tends to show up, and how to log it](https://peppytracker.com/side-effects/hair-loss/)

GLP-1 hair loss is on the labels: Wegovy 3% (6% at 7.2 mg), Zepbound 4-5%, both tied to weight reduction. What to log, when to call, how Peppy tracks it.

## [Water retention on growth hormone peptides: what to track, when it shows up, and how to log it](https://peppytracker.com/side-effects/water-retention/)

Peptide water retention (puffy hands, tight rings) is common with GH secretagogues; Egrifta lists peripheral edema at 6% vs 2%. How to log it in Peppy.

## [Joint pain on peptides: what to track, when it shows up, and how to log it](https://peppytracker.com/side-effects/joint-pain/)

Peptide joint pain is reported with GH secretagogues; Egrifta's label lists arthralgia at 13% vs 11%, tied to fluid retention. How to log it in Peppy.

## [Numbness and tingling on peptides: what to track, when it shows up, and how to log it](https://peppytracker.com/side-effects/numbness-tingling/)

Peptide numbness and tingling is reported with GH secretagogues; Egrifta's label lists paresthesia at 5% vs 2%. What to log and how to track it in Peppy.

## [Flushing on peptides and NAD+: what to track, when it shows up, and how to log it](https://peppytracker.com/side-effects/flushing/)

Peptide flushing, the warm red face and chest, is reported most with NAD+ shots and some GH peptides. No label gives a rate. How to log it in Peppy.

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Peppy is a tracking tool, not medical advice. Dose calculations are mathematical conversions only. Always follow your prescriber's instructions and verify every draw-up yourself.

Peppy is a free iPhone app (Pro subscription optional). App Store: https://apps.apple.com/us/app/peptide-tracker-peppy/id6775005514