A nurse is teaching a client who takes acetaminophen daily to manage mild knee pain. The nurse should instruct the client to monitor for which of the following adverse reactions to this medication?

Montelukast is typically prescribed as a once-daily medication for the treatment of asthma. Taking it in the evening can be beneficial as it helps to control asthma symptoms throughout the day and night. It is important to follow the prescribed dosing schedule provided by the healthcare provider.

The other statements mentioned are incorrect:
A. "I'll rinse my mouth after taking this medication": Rinsing the mouth after taking montelukast is not necessary as it is not an inhaled medication. Rinsing the mouth is typically recommended after using inhaled corticosteroids to reduce the risk of oral thrush.

B. "I'll take this medication when I get an asthma attack": Montelukast is a long-term control medication used to prevent asthma attacks and manage chronic asthma symptoms. It is not intended for immediate relief during an asthma attack.

C. "I use a spacer device when I inhale this medication": Montelukast is not an inhaled medication, so the use of a spacer device is not applicable. Spacer devices are commonly used with inhaled medications to improve the delivery of the medication to the lungs.

Leukotriene receptor antagonists (LTRAs) like Montelukast are commonly used in the treatment of asthma. They work by blocking the action of leukotrienes, which are inflammatory substances that can cause narrowing and inflammation of the airways in individuals with asthma. By preventing this inflammation, LTRAs help to reduce asthma symptoms and prevent asthma attacks.

The other options mentioned in the statements are not accurate or appropriate for teaching about Montelukast. Taking the medication only when experiencing symptoms is not the recommended approach, as LTRAs are typically taken regularly as part of ongoing asthma management. The statement about the therapeutic effect taking several weeks to notice is not accurate, as Montelukast can start to provide symptom relief within a shorter timeframe.

Additionally, the statement about increasing fiber and fluid intake to prevent constipation is unrelated to the use of Montelukast and may not apply to this medication specifically.