Which of the following medications should NOT be followed by juice or water?

Certain medications, especially liquid formulations, can have altered effectiveness when consumed with certain beverages such as juice or water. In this case, liquid antacids typically contain ingredients that can be affected by the acidic content of juices or the dilution from water, which could potentially reduce their efficacy in neutralizing stomach acid. Liquid cough syrups, on the other hand, usually do not have the same interactions but may still be better absorbed when taken alone or with water that doesn't affect the medication's action.

Both types of medication have specific instructions regarding their use with fluids; however, the critical point here is that liquid antacids should not be followed by juice or water as it can mitigate their therapeutic effects. Therefore, when considering the best practice for medication administration, it is essential to follow instructions regarding food and drink interactions to ensure the medication works as intended.