Question

for which of the following reasons should a nurse instruct a client to avoid taking guaifenesin with combination over - the - counter cold products? over - the - counter cold products can also contain guaifenesin. blood glucose levels are increased. rebound congestion is likely. medication tolerance is likely.

Explanation:

Combination OTC cold products often include guaifenesin as an active ingredient. Taking additional guaifenesin alongside these products risks exceeding the safe recommended dose of the medication. The other options are not associated with concurrent guaifenesin and cold product use: blood glucose elevation is not a linked effect, rebound congestion relates to decongestant overuse, and tolerance is not a primary concern with this combination.

Answer:

Over-the-counter cold products can also contain guaifenesin.