Difficulty: Medium

Average Score: 69%

Which of the following is the most appropriate long-term storage temperature range for promethazine suppositories?

Rationale

Room temperature at 15°C to 30°C (59°F to 86°F) is the most appropriate long-term storage temperature range for promethazine suppositories.

Promethazine suppositories are best stored at room temperature to maintain their effectiveness and stability. Storing them within this range ensures that the active ingredients remain stable and that the suppositories do not degrade or lose potency.

A (Freezer at -20°C to -10°C (-4°F to 14°F)) YOUR ANSWER

Storing promethazine suppositories in a freezer can adversely affect their formulation. Extreme cold temperatures can cause the suppositories to become brittle or alter their physical properties, potentially leading to improper dosing or ineffective medication.

B (Refrigerator, at 2°C to 8°C (36°F to 46°F)) YOUR ANSWER

While refrigeration can preserve some medications, it is not suitable for promethazine suppositories. Cold storage can result in the formation of condensation, which may compromise the integrity of the suppository and lead to degradation of the active ingredient.

D (Warm, at 30°C to 40°C (86°F to 104°F)) YOUR ANSWER

Storing promethazine suppositories in a warm environment is not advisable, as elevated temperatures can lead to melting or degradation of the suppository base. This can affect the dosage and efficacy of the medication, making it less effective for the patient.

Conclusion

For optimal stability and efficacy, promethazine suppositories should be stored at room temperature between 15°C to 30°C (59°F to 86°F). This temperature range prevents physical alterations that could arise from extreme cold or heat, ensuring the medication remains effective for patient use. Proper storage is essential for maintaining the quality and therapeutic value of the suppositories.

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