Clindamycin and Pancuronium: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jul 1, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Clindamycin
Pancuronium
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
What's going on: Pancuronium is a muscle relaxant used during surgery to relax your muscles, including the ones that help you breathe. Clindamycin is an antibiotic. When they're used together, clindamycin can add to the muscle-relaxing effect, which could make that effect stronger or last longer than expected.
The main concern is that this could slow or weaken your breathing. The good news is that this only happens in a closely watched setting, like surgery, where your care team monitors your breathing very carefully and can support it if needed. They can also adjust the muscle relaxant dose. This is something your team knows how to manage.
Mechanism: Additive neuromuscular blockade. Clindamycin (like lincomycin) has intrinsic neuromuscular-blocking properties that can potentiate nondepolarizing agents such as pancuronium. Neither agent's activation depends on metabolism relevant here; the effect is pharmacodynamic, not PK.
Direction: Enhanced/prolonged neuromuscular blockade, risk of respiratory depression.
- Onset: Rapid
- Evidence: Theoretical / case-report level
- Severity: Moderate
Management: Monitor depth of neuromuscular blockade (train-of-four) and respiratory function. If co-administered, pancuronium dose may need reduction and individualization. Anticipate the possible need for ventilatory support and have reversal readiness.
What happens
Pancuronium toxicity (respiratory depression)
Interaction Deep Dive
It has been documented that clindamycin and lincomycin can enhance the action of muscle relaxants such as pancuronium, tubocurarine, and vecuronium21.
Why it happens (mechanism)
Additive
How to manage this interaction
This interaction is managed in a monitored setting such as surgery, so keep taking both agents as your team prescribes.
- Your care team may monitor your neuromuscular function and breathing more closely when these are used together.
- The pancuronium dose may be adjusted and individualized by your anesthesia team.
- They will anticipate the possible need for breathing (respiratory) support just in case.
If you are having surgery and take clindamycin, or receive it around the same time, make sure your surgical and anesthesia team knows. Raise any questions with your pharmacist or prescriber.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Clindamycin and Pancuronium together?
Clindamycin can add to pancuronium's muscle-relaxing effect and possibly deepen or prolong it, raising the risk of weakened breathing. This is managed with close monitoring and dose adjustment in a surgical setting, so tell your care team you take clindamycin. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Clindamycin and Pancuronium interaction?
It is rated moderate. Can be significant — usually manageable with monitoring.
How quickly could this interaction happen?
The documented onset is "rapid". Effects can appear quickly, often within about 24 hours of combining the drugs.
How is the Clindamycin and Pancuronium interaction managed?
This interaction is managed in a monitored setting such as surgery, so keep taking both agents as your team prescribes. Your care team may monitor your neuromuscular function and breathing more closely when these are used together. The pancuronium dose may be adjusted and individualized by your anesthesia team. They will anticipate the possible need for breathing (respiratory) support just in case… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Clindamycin or Pancuronium need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there anything you'd monitor while I'm on both?
References (2)
- Ostergaard D, Engbaek J, & Viby-Mogensen J: Adverse reactions and interactions of the neuromuscular blocking drugs. Med Toxicol Adverse Drug Exp 1989; 4:351-368. PubMed
- Rubbo JT, Gergis SD, & Sokoll MD: Comparative neuromuscular effects of lincomycin and clindamycin. Anesth Analg 1977; 56:329-332. PubMed
Keep reading about Clindamycin
Keep reading about Pancuronium
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