2023 Update Pepcid is one of the preferred options (H2 blocker) in combination with Zyrtec (H1 blocker) to combat itching in MPNs. This change was necessary since Zantac was taken off the market due to concerns that it contained dangerous levels of N-Nitrosodimethylamine (NDMA). NDMA is classified as a “probable human carcinogen.” Carcinogens are substances that […]