Question 65

Adsorption is most likely to cause a medication to lose potency.

Adsorption can lead to a decrease in the effective concentration of a medication, thereby causing it to lose potency. This occurs when drug molecules adhere to surfaces, which can reduce their availability for therapeutic action.

A) lose potency

This option is correct because adsorption can significantly affect the pharmacokinetics of medications. When a drug adsorbs to surfaces such as container walls or biological tissues, its effective concentration in the solution decreases, leading to reduced efficacy.

B) become contaminated

While contamination is a concern in drug handling, it is not a direct result of adsorption. Adsorption pertains to the adherence of molecules to surfaces rather than introducing foreign substances that cause contamination.

C) require refrigeration

Refrigeration is typically related to the stability and shelf-life of certain medications, not directly to the process of adsorption. Adsorption does not inherently necessitate changes in temperature requirements for medications.

D) trigger anaphylaxis

Anaphylaxis is an immune response to certain allergens or medications and is unrelated to the process of adsorption. This option does not connect with the concept of how adsorption affects medication characteristics.

Conclusion

The option that most accurately reflects the impact of adsorption on medications is that they lose potency due to decreased availability of the drug. The other options either misinterpret the implications of adsorption or relate to different aspects of medication stability and safety, confirming that A is the definitive correct choice.