[Physicochemical incompatibility of injectable drugs: practical considerations]

Area of Science:

• Pharmaceutical Science
• Clinical Pharmacy

Background:

• Injectable solutions require preservatives and additives for stability.
• These excipients can cause physiochemical reactions when drugs are mixed.
• Potential outcomes include drug inactivation or patient toxicity.

Purpose of the Study:

• To highlight the risks associated with mixing injectable drug solutions.
• To address the scarcity of information on compatible drug mixtures.
• To suggest safer administration practices.

Main Methods:

• Review of potential physiochemical interactions between common injectable additives and drugs.
• Analysis of the challenges in performing timely and cost-effective compatibility studies.
• Evaluation of alternative administration strategies.

Main Results:

• Mixing injectable solutions can result in inactive or toxic end-products.
• Information regarding safe drug combinations is limited.
• Compatibility analyses are often time-consuming and expensive.

Conclusions:

• Separate administration of drugs via infusion (50-100 ml) is the preferred method.
• Utilizing pre-prepared infusion solutions from laboratories can mitigate risks.
• Further research and guidelines on drug compatibility are needed.