Which drug class treats or prevents electrolyte depletion?

• A. Corticosteroid
• B. Electrolyte replacement
• C. Anti-infective
• D. Antiprotozoal

Answer: (B)

The key idea is directly replenishing the minerals that are lost to restore normal electrolyte balance. When people lose fluids, such as from diarrhea, vomiting, sweating, or certain medications, they lose electrolytes like sodium, potassium, chloride, and bicarbonate. Providing electrolyte replacement—through oral solutions or IV fluids that contain these ions—directly restores those levels and helps fix the underlying imbalance, supporting proper fluid balance and electrical gradients in the body.

Corticosteroids can affect how the body handles electrolytes (they can cause sodium retention and potassium loss in some situations), but they don’t supply electrolytes themselves, so they’re not the primary treatment for depletion. Anti-infectives and antiprotozoals treat infections, not electrolyte losses, so they don’t address depletion directly.

Thus, electrolyte replacement is the approach that directly treats or prevents electrolyte depletion.