GLP-1 is a hormone your gut releases after you eat — it tells your brain you're full and helps your body manage blood sugar. GLP-1 medications (semaglutide, tirzepatide, and newer molecules) copy that signal, which is why they're so widely studied for weight management and metabolic health.

The articles below explain how these medications work, what the research actually shows, and what side effects and dosing schedules look like in practice. Promise offers compounded GLP-1 medications by prescription only: a licensed provider reviews every request, and not everyone qualifies.

136 articles on this topic

  1. Two friends in knitwear have a relaxed conversation beside a bright living-room window

    Semaglutide and Alcohol: What to Know

    There is no listed direct interaction between semaglutide and alcohol, but the combination can make nausea, dehydration, low blood sugar, and pancreatitis risk more important.

    August 27, 2026 · Priya Raman, Health Writer

  2. A woman pauses on a quiet desert trail and looks across the open landscape

    What Happens When You Stop Taking Semaglutide

    Appetite commonly returns as semaglutide clears, and some weight regain is likely. Trials show why stopping is better treated as a long-term care decision than as a test of willpower.

    August 27, 2026 · Elena Marsh, Health Writer

  3. A woman sits on a low sofa in a sunlit living room, holding a ceramic mug in both hands

    Does Tirzepatide Make You Tired? What Trials Say

    Fatigue was reported by 5–7% of trial participants on tirzepatide against 3% on placebo. The more useful question is what is actually causing it.

    August 27, 2026 · Elena Marsh, Health Writer

  4. A woman in a sage shirt and cream trousers rests in an armchair with a mug

    Does Insurance Cover Tirzepatide? 2026 Guide

    Insurance may cover Mounjaro for type 2 diabetes, while Zepbound coverage for obesity or sleep apnea depends on the plan. Compounded tirzepatide is generally self-pay.

    August 26, 2026 · Priya Raman, Health Writer

  5. A woman waters a potted fern beside a sunlit windowsill

    How Long Does Tirzepatide Stay in Your System?

    Tirzepatide usually takes about 25–30 days to fall to a small fraction of its starting level after the last dose. Its five-to-six-day half-life explains that estimate, but side effects and clinical effects do not end on one exact day.

    August 26, 2026 · Elena Marsh, Health Writer

  6. A woman in knitwear pauses with a mug of tea beside a sunlit windowsill

    Tirzepatide Diarrhea: How Long It Lasts

    Diarrhea is common with tirzepatide, especially after treatment begins or the dose increases. It is usually temporary, but persistent symptoms can cause dehydration and deserve a clinician's attention.

    August 26, 2026 · Nadia Okonjo, Health Writer

  7. Two people sit talking in armchairs in a bright living room, one holding a mug

    Is Tirzepatide Safe? What the Evidence Shows

    Safety is not a property of the molecule. It is the dose, the source of the vial, your own medical history, and whether a licensed clinician is accountable for the decision.

    August 26, 2026 · Julian Reyes, Health Writer

  8. A man fills a glass of water from a jug at a clear kitchen counter in morning light

    Oral Semaglutide: How the Semaglutide Pill Works

    Estimated absolute bioavailability is about 0.4% to 1% for Rybelsus tablets and about 1% to 2% for Ozempic and Wegovy tablets; all three labels require fasting administration with up to 4 ounces of water and a 30-minute wait. Promise's compounded semaglutide formulation discussed here is an injectable solution.

    August 26, 2026 · Nadia Okonjo, Health Writer

  9. A woman waters potted herbs on a sunlit windowsill in a quiet living room

    Tirzepatide vs Retatrutide: How They Compare

    Tirzepatide is a dual GIP/GLP-1 agonist with completed phase 3 trials and approved U.S. indications. Retatrutide is an investigational triple agonist that cannot be prescribed here yet — and that, not potency, is the difference that matters.

    August 26, 2026 · Elena Marsh, Health Writer

  10. Two women in full-length casual clothes sit in armchairs for a calm conversation at home

    Is Semaglutide Safe? What the Evidence Shows

    Semaglutide has years of trial data and a defined risk profile, but safe is not universal. Eligibility depends on personal history, other medicines, monitoring and exactly what product is dispensed.

    August 25, 2026 · Nadia Okonjo, Health Writer

  11. A woman kneels beside a raised herb bed in a quiet kitchen garden, a watering can resting beside her.

    Tirzepatide and Thyroid Cancer: What We Know

    The boxed warning comes from thyroid C-cell tumors in rats, not proof of human cancer. Human studies conflict, so MTC and MEN 2 history remains the decisive screening issue.

    August 25, 2026 · Elena Marsh, Health Writer

  12. A man in a blue overshirt prepares strawberries in a bright home kitchen

    Tirzepatide Weight Loss Results by Month

    In SURMOUNT-1, average weight loss reached 15.0% to 20.9% at 72 weeks, depending on dose. The first month was only the initiation phase, and results varied widely.

    August 25, 2026 · Julian Reyes, Health Writer

  13. A man in a long-sleeve top folds a linen towel at a sunlit bathroom counter in the morning

    Switching From Semaglutide to Tirzepatide

    There is no validated milligram equivalence between the two molecules. Tirzepatide restarts at its own labeled starting dose no matter where the semaglutide dose ended, and a prescriber sets the timing.

    August 25, 2026 · Elena Marsh, Health Writer

  14. A woman in a loose long-sleeve shirt kneels at a raised vegetable bed in a back garden in soft morning light, tending the plants

    Tirzepatide and Alcohol: The Risks That Matter

    There is no alcohol contraindication in the labelling. The real issues are additive nausea, low blood sugar with certain diabetes medicines, a stomach that empties slowly, and pancreatitis risk arriving from two directions.

    August 25, 2026 · Priya Raman, Health Writer

  15. A man in a long-sleeve henley sits on the edge of a made bed in soft morning light

    Tirzepatide for Sleep Apnea: What Was Approved

    In December 2024 Zepbound became the first medicine approved in the United States for moderate-to-severe obstructive sleep apnea in adults with obesity. The trials behind it are specific, and so is what that approval does and does not cover.

    August 25, 2026 · Julian Reyes, Health Writer

  16. A woman sits by a window with both hands around a mug of tea in soft morning light

    Semaglutide Cost: Brand, Self-Pay and Compounded

    Wegovy lists near $1,350 a month and Ozempic near $1,040, while the manufacturer's own self-pay channel charges $349 and eligible Medicare beneficiaries now pay a $50 copay. Same molecule, four very different bills.

    August 24, 2026 · Elena Marsh, Health Writer

  17. A woman arranges fresh vegetables into a ceramic bowl at a bright kitchen counter

    Semaglutide for Type 2 Diabetes: What Trials Show

    Brand semaglutide is approved for glycemic control in adults with type 2 diabetes, and the trial record now runs past blood sugar into heart and kidney outcomes. Compounded semaglutide is a different thing again — here is what separates them.

    August 24, 2026 · Nadia Okonjo, Health Writer

  18. An adult ties back their hair beside a dresser with a capped unbranded injection pen resting on a small tray

    How to Inject Semaglutide Safely

    Semaglutide goes into the fatty layer beneath the skin of the abdomen, front of the thigh, or back of the upper arm. The device and pharmacy label—not a generic online diagram—determine the exact technique and measured amount.

    August 21, 2026 · Priya Raman, Health Writer

  19. A woman in a long-sleeve top waters a small potted plant on a sunlit windowsill

    Is Tirzepatide a Peptide? A Clear Answer

    Yes. Tirzepatide is a 39-amino-acid synthetic peptide, and it is also a dual GIP/GLP-1 receptor agonist. Those labels describe its structure and its action, respectively.

    August 21, 2026 · Elena Marsh, Health Writer

  20. A man in a long-sleeve top pours a glass of water at a bright kitchen counter beside a bowl of citrus

    Tirzepatide Units to Mg: The Safe Conversion

    Tirzepatide units to mg is not a fixed conversion. On a U-100 syringe, 20 units is 0.2 mL; the milligram amount depends on the vial concentration.

    August 20, 2026 · Julian Reyes, Health Writer

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