Drug interactions
Clonidine + Pentazocine
Severity: Moderate
Clonidine and Pentazocine: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Both drugs depress the central nervous system, so together they can cause greater sedation, hypotension and bradycardia than either alone. This is particularly relevant in older or frail patients and with higher doses.
What this interaction means in plain words
Clonidine and Pentazocine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Clonidine belongs to Cardiovascular; Pentazocine belongs to Musculoskeletal.
Why it happens
Additive CNS depression and hypotension from opioid receptor activity and central alpha-2 adrenergic agonism.
What to do
Start with reduced doses of pentazocine and titrate, monitoring sedation, blood pressure and heart rate. Counsel patients to avoid driving or other hazardous tasks.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Pentazocine
- Calcium / magnesium / potassium / sodium oxybates + Pentazocine Contraindicated
- Olanzapine / samidorphan + Pentazocine Contraindicated
- Pentazocine + Phenelzine Contraindicated
- Pentazocine + Tranylcypromine Contraindicated
- Alfentanil + Pentazocine Major
- Alprazolam + Pentazocine Major
Other interactions of Clonidine
- Acebutolol + Clonidine Major
- Amifostine + Clonidine Major
- Amiodarone + Clonidine Major
- Amoxapine + Clonidine Major
- Atenolol-chlorthalidone + Clonidine Major
- Atenolol + Clonidine Major
Frequently asked questions
Can I take Clonidine with Pentazocine?
MediHelp rates the interaction as moderate. Clonidine and Pentazocine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Both drugs depress the central nervous system, so together they can cause greater sedation, hypotension and bradycardia than either alone. This is particularly relevant in older or frail patients and with higher doses.
How serious is the interaction between Clonidine and Pentazocine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Start with reduced doses of pentazocine and titrate, monitoring sedation, blood pressure and heart rate. Counsel patients to avoid driving or other hazardous tasks.
What other medicines interact with Pentazocine?
MediHelp also lists interactions of Pentazocine with, for example, Calcium / magnesium / potassium / sodium oxybates, Olanzapine / samidorphan, Phenelzine. The full list is on the Pentazocine page.
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