12 articles

Taking a GLP-1 with other medicines

GLP-1 drugs slow the stomach, which can change how other pills are absorbed, and several common medicines overlap with them on heart rate, blood sugar or appetite. These articles go one combination at a time: what each label says, what has been studied together, and what to raise with the prescriber before starting.

  1. GLP-1s and Your Other Medications: What Actually Interacts

    Digoxin, warfarin and oral contraceptives came through interaction studies needing no dose adjustment. The warfarin problem is real but dietary, and taking other pills with oral semaglutide cuts its absorption by 34%.

    7 min read · 3 citations
  2. Metformin and a GLP-1 Together: The Risk Is Not the One People Expect

    The diabetes trials behind these drugs were largely run on people already taking metformin. Stomach side effects did not stack in the largest analysis, and low blood sugar comes from other drugs. The real overlap is dehydration.

    8 min read · 13 citations
  3. Phentermine and a GLP-1 Together: What the Labels and Trials Show

    Phentermine's label says combining it with any other weight-loss drug is not recommended; the Wegovy and Zepbound labels never mention it. The one trial, with liraglutide, found no meaningful extra loss. No semaglutide or tirzepatide trial exists.

    10 min read · 17 citations
  4. Antidepressants and a GLP-1: Ozempic, Wellbutrin, Lexapro and What the Labels Say

    No GLP-1 label names an antidepressant as an interaction, and people on antidepressants lost as much weight on semaglutide as everyone else. The real overlaps: stacked nausea, slowed absorption of tablets, and two bupropion rules.

    11 min read · 19 citations
  5. Levothyroxine and a GLP-1: Why Your Thyroid Dose May Need to Come Down

    Levothyroxine and a GLP-1 can be taken together. Semaglutide tablets raised thyroxine exposure 33% in a dedicated study, and weight loss lowers the dose most people need. On an unchanged dose both push TSH down, not up.

    11 min read · 16 citations
  6. Drinking on a GLP-1: What the Label Actually Says

    The Wegovy label contains no guidance about drinking at all; we checked every one of its eleven uses of the word. What it does warn about, and what two randomized trials found when they tested the pairing deliberately.

    8 min read · 4 citations
  7. Jardiance or Farxiga With Ozempic or Mounjaro: Taking an SGLT2 and a GLP-1

    SGLT2 inhibitors like Jardiance and Farxiga are routinely taken with Ozempic or Mounjaro, and no label forbids it. Sugar and weight effects add up in trials; heart and kidney gains rest on subgroups. The real overlap is dehydration and ketoacidosis.

    12 min read · 23 citations
  8. Blood Thinners and a GLP-1: Warfarin, Eliquis, Xarelto With Ozempic or Mounjaro

    Blood thinners and GLP-1 drugs can be taken together. Warfarin showed no meaningful change with semaglutide, but tirzepatide was never tested with it and no DOAC has been studied with any approved GLP-1. What the labels say and where the real risks are.

    11 min read · 22 citations
  9. Adderall and a GLP-1: Taking an ADHD Stimulant With Ozempic or Zepbound

    No label lists an interaction between Adderall, Vyvanse or Concerta and Ozempic, Wegovy or Zepbound, and no study has tested the pairing. Both raise heart rate and cut appetite, and the GLP-1 slows the stomach. What the labels say and what to ask.

    10 min read · 15 citations
  10. Gabapentin and Pregabalin Weight Gain: What the Labels Show, and Where a GLP-1 Fits

    Pregabalin (Lyrica) weight gain rises with dose: 9% gained 7% or more in short trials vs 2% on placebo. Gabapentin's label signal is smaller. Neither may be stopped abruptly, and no trial has tested a GLP-1 for this gain.

    11 min read · 15 citations
  11. Coffee on Ozempic, Wegovy or Mounjaro: What the Labels and Studies Say

    You can drink coffee on Ozempic, Wegovy, Mounjaro or Zepbound; no label mentions it. Semaglutide tablets are the exception: a small glass of water alone, and coffee held for half an hour. What coffee does to reflux, heart rate, hydration and blood sugar on a GLP-1.

    11 min read · 26 citations
  12. Statins and a GLP-1: Taking Lipitor or Crestor With Ozempic or Mounjaro

    A statin and a GLP-1 can be taken together, and most people in the semaglutide heart trials did. Atorvastatin exposure held steady with semaglutide; tirzepatide was never tested with a statin. What changes is the lipid panel, and how to read muscle aches.

    11 min read · 15 citations