Which abbreviation indicates a delayed release among sustained- or extended-release medicines?

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Multiple Choice

Which abbreviation indicates a delayed release among sustained- or extended-release medicines?

Explanation:
Delayed release means the drug is kept from releasing until some point after administration, often to protect the drug from stomach acid or to release it further along the digestive tract. The DR designation is used to signal this timing design, indicating that release is delayed rather than immediate or prolonged. In contrast, ER stands for extended release, CR for controlled release, and CD is not a standard label for delayed release, so it wouldn’t indicate the intended timing of drug release.

Delayed release means the drug is kept from releasing until some point after administration, often to protect the drug from stomach acid or to release it further along the digestive tract. The DR designation is used to signal this timing design, indicating that release is delayed rather than immediate or prolonged. In contrast, ER stands for extended release, CR for controlled release, and CD is not a standard label for delayed release, so it wouldn’t indicate the intended timing of drug release.

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