atropine vs metoclopramide
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Side-by-side comparison of atropine and metoclopramide. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
7 DRUG INTERACTIONS 7.1 Mexiletine Atropine Sulfate Injection decreased the rate of mexiletine absorption without altering the relative oral bioavailability; this delay in mexiletine absorption was reversed by the combination of atropine and intravenous metoclopramide during pretreatment for anesthesia.
AtroPen
Reglan
Atropine is a medicine that can temporarily block severe effects on your body. It can treat certain types of poisoning and help with a very slow heart rate.
Metoclopramide is a drug that helps with stomach problems. It can help food move faster through your stomach and reduce nausea.
Atropine is used to treat severe or life-threatening muscarinic effects. This includes reducing saliva production, acting as an antivagal agent, and treating poisoning from organophosphorus or certain mushrooms. It can also treat a very slow heart rate that can lead to cardiac arrest.
This medicine treats heartburn caused by acid reflux when other treatments don't work. It also helps with symptoms of slow stomach emptying in people with diabetes, like nausea, vomiting, and feeling full. This medicine is for adults and should not be used for more than 12 weeks.
Atropine works by blocking the effects of a chemical called acetylcholine in your body. This helps to reduce saliva, relax your airways, and increase your heart rate. It counteracts the effects of certain poisons by blocking their action on your body.
Metoclopramide helps your stomach muscles move faster. This helps food empty from your stomach more quickly. It also blocks a chemical in your brain that causes nausea.
- • Dry mouth
- • Blurred vision
- • Sensitivity to light
- • Fast heart rate
- • Restlessness
- • Drowsiness
- • Fatigue
- • Feeling tired
- Diarrhoea 535
- Hypotension 485
- Nausea 458
- Death 445
- Dyspnoea 394
- Tardive Dyskinesia 13,205
- Extrapyramidal Disorder 11,628
- Nervous System Disorder 7,175
- Dystonia 6,661
- Pain 4,666
If you have coronary artery disease, the total dose of atropine should be limited to avoid a fast heart rate. Atropine may cause acute glaucoma, pyloric obstruction, complete urinary retention, or thick bronchial secretions.
Metoclopramide can cause a serious movement disorder called tardive dyskinesia. This may not go away even after you stop taking the medicine. The risk of tardive dyskinesia increases with long-term use and high doses. Call your doctor right away if you have uncontrolled muscle movements.
If you are pregnant and have a life-threatening condition, you should still receive atropine if needed. Small amounts of atropine can pass into breast milk. To minimize exposure to the baby, you may pump and discard your milk for 24 hours after using atropine before breastfeeding again.
Tell your doctor if you are pregnant or plan to become pregnant. It is not known if this medicine will harm your unborn baby. Talk to your doctor about the risks and benefits of taking this medicine while breastfeeding.
How to Read This atropine vs metoclopramide Comparison
atropine is classified in the Anticholinergic drug class, while metoclopramide sits within the Prokinetic / Antiemetic class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, atropine has 2,317 submissions while metoclopramide has 43,335. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to metoclopramide speeds up the stomach and can cancel out the slowing effect that atropine has on digestion.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for atropine or metoclopramide.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.