Describes a substance that counteracts acidity in the stomach.
Después de la cena, tomé un antiácido para aliviar la acidez estomacal.
After dinner, I took an antacid to relieve my stomach acidity.
Tomé un antiácido después de comer, ya que sentí un ardor en el estómago.
I took an antacid after eating, as I felt a burning sensation in my stomach.