A nurse is reviewing a list of current medications for a client who is starting therapy with furosemide. Which of the following medications should the nurse identify as being contraindicated?

A. Levothyroxine: No known contraindication when used with furosemide. B. Lithium carbonate: Furosemide can increase lithium levels due to its diuretic effects, which may lead to lithium toxicity. C. Albuterol: No contraindication with furosemide. D. Cetirizine: No contraindication with furosemide.