The nurse is scheduled to administer the patient’s next dose of vancomycin at 9:30 a.m. At what time should the nurse draw the patient’s blood to check the trough vancomycin level?

Choice A rationale:

Side effect: A side effect is an effect of a drug that is secondary to the main intended effect. It is usually predictable and may be either beneficial or harmful. However, constipation is not a common or expected side effect of iron supplements. It is more likely to be an adverse reaction.

Choice B rationale:

Therapeutic effect: The therapeutic effect is the intended effect of a drug, the one that is desired to treat the condition. In this case, the therapeutic effect of the iron supplement would be to increase the patient's iron levels. Constipation is not the desired effect of the iron supplement, so it is not a therapeutic effect.

Choice C rationale:

Adverse reaction: An adverse reaction is an unwanted or harmful reaction to a drug that is not necessarily predictable. It can range from mild to severe. Constipation is a common adverse reaction to iron supplements. It is thought to be caused by the iron binding to undigested food in the intestines, making it harder to pass stool.

Choice D rationale:

Toxicity: Toxicity refers to a poisonous or harmful effect of a drug. It is usually caused by taking too much of a drug or by a drug interacting with another drug or substance. Constipation is not a sign of iron toxicity. Iron toxicity can cause symptoms such as nausea, vomiting, abdominal pain, and diarrhea.

Choice A rationale:

Inaccurate statement: While herbal supplements are derived from plant materials, this does not inherently guarantee their safety or non-toxicity. Some plants contain potent compounds that can have adverse effects, even in small doses.

Lack of regulation: Herbal supplements are not regulated by the FDA in the same way as prescription medications. This means that there is no guarantee of their purity, potency, or consistency.

Potential for interactions: Herbal supplements can interact with prescription medications, potentially leading to harmful side effects.

Choice B rationale:

Cost-related issue: The cost of herbal supplements can vary widely. While some may be less expensive than prescription medications, others can be quite costly.

Misleading focus: Emphasizing cost as a primary factor could lead patients to prioritize affordability over safety and effectiveness.

Choice C rationale:

Addresses quality concerns: This response directly addresses the lack of stringent quality standards for herbal supplements, highlighting a significant safety concern.

Encourages informed decision-making: This response encourages patients to carefully consider the potential risks and benefits of herbal supplements, prompting them to seek reliable information and discuss their choices with healthcare providers.

Choice D rationale:

Convenience vs. safety: While the convenience of herbal supplements may be appealing, this response does not address the potential safety concerns associated with their use.

Potential for misuse: Highlighting convenience could lead to patients using herbal supplements inappropriately or without necessary guidance from healthcare professionals.