Tag: Pepcid ac

Explore our medication guides and pharmacology articles within this category.

Is Pepcid AC an Antihistamine? Unpacking Its True Classification

Oct 7, 2025 •

4 min read

More than 60 million Americans experience heartburn at least once a month. Many reach for Pepcid AC for relief, but this raises a common question: **Is Pepcid AC an antihistamine?** The answer is yes, but not in the way most people think [1.7.3].

Yes, Pepcid AC Is a Histamine Blocker (H2 Blocker) and Here's How It Works

Oct 7, 2025 •

4 min read

Pepcid AC, which contains the active ingredient famotidine, is indeed a histamine blocker—specifically, a histamine-2 (H2) receptor antagonist. It belongs to a class of medications that work differently than the antihistamines used for allergies to reduce stomach acid and relieve symptoms of heartburn.