Final answer:
Non-narcotic analgesic drugs are not effective in controlling severe pain; they are more suited to managing low-to-moderate intensity pain. Severe pain usually requires prescription medications, which can have significant risks including addiction.
Step-by-step explanation:
The option that is NOT an advantage of using nonnarcotic analgesic drugs as the first step in pain control is B. These drugs can control severe pain. Nonnarcotic analgesics, such as over-the-counter (OTC) medicines like acetaminophen and nonsteroidal anti-inflammatory drugs (NSAIDs), including aspirin, naproxen, and ibuprofen, are typically effective for low-to-moderate intensity pain, especially pain associated with inflammation. However, they are not generally effective for controlling severe pain. Severe pain often requires stronger medication, such as prescription opioids, which can have serious side effects and carry risks of addiction and abuse, hence the need to use them under strict medical supervision.