Final answer:
Metformin is expected to decrease the blood glucose level in the client.
Step-by-step explanation:
The expected therapeutic effect of metformin, a medication commonly used to treat type 2 diabetes, is a decreased blood glucose level. Metformin works by decreasing the production of glucose in the liver and improving the body's sensitivity to insulin, which helps lower blood sugar levels. By reducing the amount of glucose in the bloodstream, metformin helps to regulate blood sugar levels and manage diabetes.
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