A nurse is reinforcing teaching with a client who has a new prescription for enoxaparin. The nurse should identify which of the following over-the-counter products as unsafe for use with enoxaparin.

A. Incorrect. Cimetidine is not known to interact significantly with enoxaparin. B. Incorrect. Docusate is a stool softener and does not typically interact with enoxaparin. C. Incorrect. While calcium supplements may interact with certain medications, there's no significant interaction between calcium supplements and enoxaparin. D. Correct. Naproxen is a nonsteroidal anti-inflammatory drug (NSAID. and can increase the risk of bleeding when taken with anticoagulants like enoxaparin. Therefore, it's considered unsafe to use both together.