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Table 5 Numbers of hypothyroid patients on levothyroxine (n = 925) who were taking antacids or acid reducers >2 times/week

From: Comorbidities, Concomitant Medications, and Diet as Factors Affecting Levothyroxine Therapy: Results of the CONTROL Surveillance Project

Antacid or acid reducer n (%)
Prescription acid reducer – (–)
 Proton pump inhibitora 180 (19.5)
 Histamine (H2)-receptor blockerb 0 (0.0)
Non-prescription acid reducer – (–)
 Proton pump inhibitora 83 (9.0)
 Histamine (H2)-receptor blockerb 53 (5.7)
Non-prescription antacidsc 168 (18.2)
Other non-prescription antacid or acid reducerd 13 (1.4)
Other prescription antacid or acid reducere 11 (1.2)
None of the above 543 (58.7)
  1. Because patients could specify more than one medication, the total for the last column exceeds 100 %
  2. aEsomeprazole, lansoprazole, omeprazole, pantoprazole, rabeprazole
  3. bCimetidine, ranitidine
  4. cMultiple brands
  5. dOther non-prescription antacids or acid reducers = generics of multiple products
  6. eOther prescription antacids or acid reducers = generics of multiple products