Related Experiment Videos
A preliminary study on the interaction between ethanol and propranolol in normal human subjects
A Chakrabarti1, S K Garg, P L Sharma
1Department of Pharmacology, Postgraduate Institute of Medical Education and Research, Chandigarh.
Indian Journal of Physiology and Pharmacology
|July 1, 1992
Summary
Ethanol and propranolol interact, affecting each other's levels and causing significant changes in blood pressure. These pharmacokinetic and hemodynamic interactions warrant further investigation.
Area of Science:
- Pharmacology and Toxicology
- Clinical Pharmacology
Background:
- Ethanol and propranolol are commonly used substances with known individual physiological effects.
- Understanding their combined effects is crucial for patient safety and effective treatment.
Purpose of the Study:
- To investigate the pharmacokinetic and hemodynamic interactions between ethanol and propranolol in healthy volunteers.
- To assess the impact of co-administration on drug concentrations and vital signs.
Main Methods:
- A preliminary study involving four healthy male volunteers.
- Administration of ethanol and propranolol, both individually and in combination.
- Measurement of drug concentrations and hemodynamic parameters (heart rate, blood pressure).
Main Results:
- Ethanol increased propranolol peak concentration; propranolol reduced ethanol clearance.
- Ethanol caused tachycardia and increased systolic blood pressure.
- Propranolol caused bradycardia.
- Combined administration led to a significant fall in diastolic blood pressure without affecting heart rate or systolic blood pressure.
Conclusions:
- Significant pharmacokinetic and hemodynamic interactions exist between ethanol and propranolol.
- These interactions have clinical relevance and require further detailed study.