Topic

Peptide side effects

Every medication that does something can do something unwanted. These articles catalogue peptide side effects and those reported for GLP-1 medications — nausea, injection-site reactions, and the rarer things worth knowing about — plus what researchers report about how long effects last and what tends to help.

Honest side-effect information is a feature, not a liability: it's how you and your provider decide together whether a treatment fits. Where an effect has its own article — nausea, hair shedding, fatigue — you'll find the detail there.

56 articles on this topic

  1. A woman pours water in a quiet spa lounge while dressed in a sage top and cream trousers

    Does Semaglutide Make You Tired? What Trials Show

    Yes, fatigue can happen, though it was reported by a minority of people in STEP trials. The timing and accompanying symptoms help distinguish low intake or dehydration from hypoglycemia or another cause.

    August 27, 2026 · Julian Reyes, Health Writer
  2. 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
  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 man in a long-sleeve shirt and work trousers kneels beside a raised vegetable bed in a small garden

    NAD Injection Side Effects: What Is Reported

    Published intravenous data describe transient infusion-associated symptoms in one small retrospective series and no reported adverse events in an earlier slow-infusion pilot; because the studies differed in design and did not randomize infusion rate, they do not establish speed as the cause.

    August 27, 2026 · Julian Reyes, Health Writer
  5. A woman in a linen shirt and trousers fastens her cuff in a sunlit living room

    TB-500 Side Effects: What Is Known and What Is Not

    Most of what circulates as a TB-500 side effect list is neither reported nor ruled out. The honest version starts with how thin the human safety data is — and with why a seller's clean record is not one.

    August 27, 2026 · Nadia Okonjo, Health Writer
  6. A man in a softly lit bedroom folds a cream blanket beside a neatly made bed

    Ipamorelin Side Effects: What Human Data Shows

    Human safety data for ipamorelin are unusually thin. Short-term reports exist, but no published trial tells us how common side effects are with months or years of compounded use.

    August 26, 2026 · Julian Reyes, Health Writer
  7. 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
  8. 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
  9. A woman in a long-sleeve top stands beside a window in soft early-morning light, her long hair loose over one shoulder

    Does Semaglutide Cause Hair Loss?

    In the pooled 68-week trials, hair loss was reported by 3% of adults on semaglutide 2.4 mg against 1% on placebo. Telogen effluvium after fast weight loss explains it better than any proven effect on the follicle.

    August 25, 2026 · Julian Reyes, Health Writer
  10. A woman in a long-sleeve top and full-length leggings holds a calm seated stretch on a mat in a sunlit room

    MOTS-c Side Effects: What Is Known and What Is Not

    No completed human trial has measured them. What gets sold as a MOTS-c side-effect profile is assembled from injection-site experience with subcutaneous peptides, from pharmacology, and from what a prescriber screens for.

    August 25, 2026 · Elena Marsh, Health Writer
  11. Two adults in fitted long-sleeve tops sit talking across a small table by a window in warm afternoon light

    Are Peptides Safe? What the Risk Depends On

    Safety is not a property a molecule carries on its own. It belongs to the compound plus a dose, plus the vial it came from, plus the person injecting it, plus someone qualified who is accountable for the decision.

    August 24, 2026 · Nadia Okonjo, Health Writer
  12. A woman with loosely tied hair pauses over tea at a sunlit table with a wooden hairbrush nearby

    Does Tirzepatide Cause Hair Loss?

    In the pivotal 72-week obesity trials, hair loss was reported by about 3%–7% of tirzepatide groups versus about 1% with placebo. Weight-loss-related telogen effluvium is the leading explanation, but a direct drug effect has not been ruled out.

    August 18, 2026 · Priya Raman, Health Writer
  13. A woman pauses mid-thought over an open notebook at a wooden desk by a sunlit window

    BPC-157 Side Effects and the Evidence Gap

    [FDA's July 2026 briefing](https://www.fda.gov/media/193343/download) identifies three indexed uncontrolled reports describing BPC-157 exposure in 31 people, plus two older controlled enema studies reported only as meeting abstracts. That limited record, more than any list of symptoms, is the honest answer to what its side effects are.

    August 15, 2026 · Priya Raman, Health Writer
  14. A man in a grey t-shirt reads a book in bed under cream linen bedding in low warm lamplight

    Sermorelin Side Effects, by the Numbers

    About one patient in six gets a reaction where the needle went in. Almost everything else on the list occurs in under 1% — but the trial data behind those numbers comes from a population that may not look like you.

    August 15, 2026 · Julian Reyes, Health Writer
  15. A man slices fresh vegetables at a sunlit kitchen counter, bowls of produce beside him

    Tirzepatide Side Effects, From Common to Rare

    Gastrointestinal effects are the ones almost everyone asks about — and across the tirzepatide dose range they affect 39% to 49% of people, concentrated in the weeks when the dose is going up.

    August 15, 2026 · Julian Reyes, Health Writer
  16. A man prepares a light, colorful meal of vegetables and grains at a stone kitchen counter in soft morning light

    Semaglutide Side Effects, From Common to Rare

    Across pooled STEP-trial safety data, only 4.3% of adults taking semaglutide 2.4 mg stopped treatment because of gastrointestinal side effects.

    August 14, 2026 · Elena Marsh, Health Writer

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