GLP1 Protocol
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All GLP-1 Journey Guides

235 hand-edited guides organized by topic, category, and medication. New guides go live every day.

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Side effects · 72 guides

What to expect, how to manage, when to call your doctor

lunch_diningDigestive (14)

Nausea, constipation, diarrhea, vomiting, bloating, heartburn, sulfur burps.

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Semaglutide

Semaglutide Bloating: Causes and How to Calm Your Gut

About 7% of Wegovy users report abdominal distension. Here's why food sits and gas builds — and the eating, drinking, and OTC fixes that quiet a bloated belly.

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Semaglutide

Semaglutide Constipation: Causes, Timeline, and Relief

Constipation affects roughly 1 in 4 people on semaglutide. Here's why it happens, when it starts, and the hydration, fiber, and laxative strategies that actually work.

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Semaglutide

Semaglutide Diarrhea: Why It Happens and How to Manage It

About 30% of people on Wegovy report diarrhea. Learn why semaglutide causes loose stools, when to worry, and the foods and OTC remedies that help.

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Semaglutide

Semaglutide and Heartburn: Acid Reflux on GLP-1s

About 9% of people on Wegovy report dyspepsia and 5% report GERD. Here's why semaglutide causes heartburn and how to keep acid where it belongs.

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Semaglutide

Semaglutide Nausea: Why It Happens & How to Find Relief

Nausea is the most common side effect when starting semaglutide. Learn the timeline, comfort measures, and when to call your doctor.

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Semaglutide

Semaglutide Sulfur Burps: The Egg-Smelling Burps Explained

Sulfur burps on semaglutide smell like rotten eggs and feel embarrassing. Here's the gas chemistry behind them and what actually makes them stop.

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Semaglutide

Semaglutide Vomiting: When It's Normal and When to Call Your Doctor

About 24% of people on Wegovy vomit at least once. Here's how to tell ordinary GI adjustment from a red-flag pattern that needs urgent care.

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Tirzepatide

Tirzepatide Bloating: Causes and How to Calm Your Gut

Slowed digestion, gas, and constipation drive bloating on Mounjaro and Zepbound. Learn the food and habit fixes that actually deflate the discomfort.

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Tirzepatide

Tirzepatide Constipation: Causes, Timeline, and Relief

About 1 in 6 tirzepatide users gets constipated. Learn why Mounjaro and Zepbound slow your gut, when it peaks, and what actually relieves it.

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Tirzepatide

Tirzepatide Diarrhea: Why It's Common and How to Manage It

Roughly 22% of tirzepatide users experience diarrhea — more than with semaglutide. Learn why, what to eat, and when to call your doctor.

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Tirzepatide

Tirzepatide and Heartburn: Acid Reflux on Mounjaro and Zepbound

Tirzepatide slows digestion, which can push stomach acid into your esophagus. Learn why heartburn is common and what actually helps.

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Tirzepatide

Tirzepatide Nausea: What to Expect and How to Get Relief

Nausea is the most common tirzepatide side effect. Learn the SURMOUNT-1 rates, typical timeline, and proven comfort measures for Mounjaro and Zepbound.

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Tirzepatide

Tirzepatide Sulfur Burps: The Rotten-Egg Burps Explained

Why tirzepatide causes rotten-egg burps, which foods make them worse, and the OTC fixes that actually clear them up on Mounjaro and Zepbound.

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Tirzepatide

Tirzepatide Vomiting: When It's Normal and When to Call Your Doctor

About 1 in 10 tirzepatide users vomits during the trial. Learn what's typical, what's a red flag, and how to keep down fluids on Mounjaro or Zepbound.

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bedtimeEnergy & sleep (2)

Fatigue, insomnia, vivid dreams.

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fitness_centerPhysical changes (11)

Hair loss, muscle loss, skin, headaches, injection-site reactions.

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Skin Changes on GLP-1: Texture, Acne, and 'Ozempic Face'

GLP-1s do not act on skin directly, but rapid weight loss reshapes it. Here is what causes 'Ozempic face,' loose skin, acne shifts, and what actually helps.

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Semaglutide

Semaglutide Dizziness: Causes, Timeline, and When to Worry

Dizziness is listed in ~8% of Wegovy trial patients. Here's why it happens, how dehydration drives it, and the red flags that need urgent care.

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Semaglutide

Semaglutide Hair Loss: What's Really Happening and What to Do

About 3% of Wegovy users report hair loss in trials, but real-world rates are higher. Here's why rapid weight loss triggers shedding and how to slow it down.

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Semaglutide

Semaglutide Headaches: Triggers, Patterns, and Relief

About 14% of people on Wegovy report headaches. Usually it's dehydration or low blood sugar. Here's how to identify the pattern and stop the cycle.

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Semaglutide

Semaglutide Injection Site Reactions: Redness, Bumps, and How to Avoid Them

Injection site reactions affect 6-9% of semaglutide users. Here's how to tell normal redness from infection — and the simple technique tweaks that prevent most reactions.

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Semaglutide

Semaglutide Muscle Loss: Real Risk and How to Protect Lean Mass

Up to 40% of semaglutide weight loss can be lean mass without intervention. Here's the evidence — and the protein and resistance training plan that protects muscle.

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Tirzepatide

Tirzepatide Dizziness: Causes and When to Call Your Doctor

Roughly 5% of Zepbound users report dizziness. Most causes are dehydration, low sodium, or hypoglycemia — and most are fixable. Here's how to sort them.

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Tirzepatide

Tirzepatide Hair Loss: Is It the Drug or the Weight Loss?

About 5% of Zepbound users report hair loss in trials. The cause is almost always rapid weight loss and low protein — not the drug itself. Here's what helps.

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Tirzepatide

Tirzepatide Headaches: Triggers, Patterns, and Relief

Headaches on Mounjaro or Zepbound are usually a hydration and electrolyte problem. Learn the patterns, the easy fixes, and when to call your doctor.

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Tirzepatide

Tirzepatide Injection Site Reactions: What's Normal

Roughly 3–6% of Zepbound users report injection site reactions. Most are harmless redness or bruising. Here's what's normal — and what isn't.

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Tirzepatide

Tirzepatide Muscle Loss: How to Protect Lean Mass

On tirzepatide, roughly 25–40% of total weight loss can come from lean mass without intervention. Protein and resistance training change that ratio.

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psychologyMental & emotional (9)

Anxiety, mood changes, food noise, alcohol cravings, motivation.

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Food Noise on GLP-1: Why It Goes Quiet and What That Feels Like

Food noise is the constant background chatter about what to eat next. GLP-1 medications quiet it — here is why, and what people actually notice when it stops.

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GLP-1 and Alcohol Cravings: The Surprising Side Effect

GLP-1 users keep reporting that alcohol just stopped sounding good. Researchers are paying attention. Here is what the early evidence actually shows.

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GLP-1 and Depression: The FDA Investigation Explained

The FDA investigated whether GLP-1 medications cause suicidal thoughts. Here is what they found, what the data actually shows, and when to get help.

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Mood Changes on GLP-1: What Real Users Notice

GLP-1 users report a quieter, flatter emotional landscape — sometimes welcome, sometimes not. Here is what the research and patient reports actually say.

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Motivation on GLP-1: Why It Feels Different (and Sometimes Worse)

GLP-1 users report wildly different motivation experiences. Some feel sharper; others feel flatter. Here is why, and what to do about each.

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Semaglutide

Semaglutide and Anxiety: What's the Real Connection?

Anxiety isn't listed in the Wegovy label, but many users report it. Here's what the data actually says — and the lifestyle drivers usually behind it.

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Semaglutide

Semaglutide and Insomnia: Why Sleep Suffers and What Helps

Insomnia isn't a labeled semaglutide side effect, but it's commonly reported. Here's what drives it — undereating, GI symptoms, mood — and how to fix it.

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Tirzepatide

Tirzepatide and Anxiety: What People Notice and Why

Anxiety isn't a top-line tirzepatide trial finding, but reports are common. Here's what's drug, what's caloric deficit, and what to do about it.

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Tirzepatide

Tirzepatide and Insomnia: Sleep Disruption Explained

Insomnia isn't a top tirzepatide trial finding, but patient reports are common. Here's the likely mechanism — and how to sleep through dose escalations.

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warningSerious & rare (11)

Gallbladder, hypoglycemia, plus reported anecdotal effects (vision, tinnitus, hot flashes, etc.).

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GLP-1 and Libido: How Sex Drive Can Change

Some GLP-1 users feel their libido rise; others feel it drop. Neither is on the label. Here is what is likely happening and what to do about it.

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Period Changes on GLP-1: Why Your Cycle Might Shift

GLP-1s do not act directly on menstrual hormones, but rapid weight loss reshapes them. Cycles often regularize in PCOS — and can pause altogether with aggressive loss.

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Why You Feel Cold on GLP-1 Medications

Feeling cold on a GLP-1 is not on the label, but it is one of the most consistent off-label reports. Here is the likely mechanism and when to investigate.

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Hot Flashes on GLP-1: Is It the Drug or Something Else?

Hot flashes on GLP-1s are not on the label, but they are reported — sometimes from the drug, sometimes from rapid weight loss, sometimes from menopause hiding underneath.

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GLP-1 and Ringing in the Ears: What Users Report

Tinnitus is not on any GLP-1 label, but reports exist. Most are likely incidental — but the patterns worth investigating are specific and not all benign.

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GLP-1 Vision Changes: When Blurry Vision Means Something

Most blurry vision on GLP-1s is transient and benign — but a rare optic nerve signal and diabetic retinopathy risk deserve real attention. Here is what to know.

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Vivid Dreams on GLP-1: What's Causing Them

Many GLP-1 users report dreams that are sharper, weirder, or more emotional. It is anecdotal, not labeled — but there are real mechanisms worth understanding.

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Semaglutide

Semaglutide and Gallbladder Issues: What the Data Says

Gallbladder problems affected ~2.6% of Wegovy users in trials versus 1.2% on placebo. Here's the evidence, the warning signs, and how to lower your risk.

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Semaglutide

Semaglutide and Low Blood Sugar: When Hypoglycemia Actually Happens

Hypoglycemia is rare on semaglutide alone but a real risk if you combine it with insulin or sulfonylureas. Here's who's at risk and the warning signs.

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Tirzepatide

Tirzepatide Gallbladder Issues: What the SURMOUNT Data Shows

Gallbladder events occurred in roughly 0.5–2.5% of Zepbound users in SURMOUNT-1 vs. 0.6% on placebo. Here's the mechanism, risk factors, and red flags.

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Tirzepatide

Tirzepatide and Low Blood Sugar: Risk Profile and Prevention

Tirzepatide alone causes hypoglycemia in about 4% of non-diabetic users. Combined with insulin or sulfonylureas, the risk multiplies. Here's how to manage it.

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health_and_safetySafety questions (6)

Cancer, thyroid, pregnancy, contraindications, who shouldn't take GLP-1s.

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monitor_heartLiving with other conditions (6)

PCOS, T2D, sleep apnea, heart, kidney, fatty liver.

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groupsSpecial scenarios (9)

Bariatric, teens, elderly, with other meds, sickness, holidays.

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GLP-1s After Bariatric Surgery: When They Help and When They Don't

GLP-1s are increasingly used after sleeve or bypass — for weight regain, suboptimal loss, or T2D recurrence. Here's when they help and how dosing changes.

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GLP-1s with Antidepressants: SSRIs, SNRIs, and What to Watch

GLP-1s and antidepressants don't have a major pharmacologic interaction, but overlapping side effects and mood changes deserve attention. Here's the honest picture.

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GLP-1s and Birth Control: Why Tirzepatide Has a Pill Warning

Tirzepatide's label warns that oral contraceptives may be less effective for 4 weeks after starting and after each dose escalation. Here's what to do.

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Navigating Holidays on GLP-1: Family, Food, and Self-Compassion

Holiday meals, family comments, and visible weight loss are a different experience on a GLP-1. Practical strategies for the food and the dynamics.

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Getting a Tattoo on GLP-1: What to Know About Healing

Tattoos and GLP-1 medications: how rapid weight loss, protein intake, and hydration affect healing. Practical prep tips before your appointment.

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Taking GLP-1s with Thyroid Medication: Timing and Absorption

GLP-1s slow gastric emptying, which can change levothyroxine absorption. Here's the timing strategy and what to ask your prescriber about TSH monitoring.

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GLP-1s for Adults 65+: Special Considerations

GLP-1s work in older adults, but the side-effect calculus shifts. Hypoglycemia, dehydration, sarcopenia, and renal monitoring deserve more weight after 65.

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GLP-1s for Teens: What FDA Approval Means for Adolescents

Wegovy and Saxenda are FDA-approved for adolescents 12+. Here's what the trials showed, what parents should ask, and the conversation to have with your teen.

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Should You Inject GLP-1 When You're Sick? A Practical Guide

Stomach bug, flu, or COVID on a GLP-1? Here's when to skip your dose, how to avoid dehydration and AKI, and what to tell your prescriber.

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menu_bookReference & getting started (4)

Glossary, newcomer guide, full medication list, methodology.

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