Search by Medical Condition A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Clinical Trials for Achlorhydria Study to Evaluate Effects of Food or Proton Pump Inhibitor on the Pharmacokinetics of Itraconazole in Healthy Volunteers Assessment of Gastric pH Changes Induced by Ascorbic Acid Tablets Does Omeprazole Decrease Intestinal Calcium Absorption?