Final answer:
Sodium lauryl sulfate is the ingredient in toothpaste that reduces the antimicrobial effect of chlorhexidine and should be administered at least 30 minutes apart.
Step-by-step explanation:
The ingredient in toothpaste that reduces the antimicrobial effect of chlorhexidine and should be administered at least 30 minutes apart is Sodium lauryl sulfate (option B). Sodium lauryl sulfate is a common ingredient in toothpaste and acts as a foaming agent. However, it can interfere with the antimicrobial properties of chlorhexidine, a commonly used antiseptic. To effectively utilize both chlorhexidine and toothpaste, it is recommended to wait at least 30 minutes between their applications. The usage of chlorhexidine mouthwash and a toothpaste containing sodium lauryl sulfate.
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