For occasional reflux, an over-the-counter antacid provides the fastest relief, often within minutes. If reflux happens more than twice a week, a stronger class of medication that reduces acid production will work better than simply neutralizing acid after the fact. The right choice depends on how often your symptoms occur, how severe they are, and whether you need quick relief or long-term control.
Antacids for Quick Relief
Antacids are the simplest option and work by directly neutralizing stomach acid. The active ingredients you’ll find on the label are typically calcium carbonate, magnesium hydroxide, or aluminum hydroxide. They start working within minutes, which makes them ideal for occasional heartburn after a heavy meal or a trigger food. The tradeoff is that their effects are short-lived, usually lasting one to three hours.
Because antacids don’t reduce the amount of acid your stomach makes, they’re a poor fit for frequent reflux. Think of them as a fire extinguisher, not a fireproofing system. If you’re reaching for antacids more than a couple of times a week, it’s worth stepping up to something that controls acid at the source.
H2 Blockers for Moderate Symptoms
H2 blockers reduce the amount of acid your stomach produces by blocking the signals that tell your stomach lining to ramp up production. Famotidine is the most widely available option over the counter. For GERD, it’s typically taken twice a day (morning and bedtime), and a standard course runs about six weeks. Each dose suppresses acid for roughly 8 to 12 hours, which is a significant step up from antacids.
H2 blockers are a good middle ground if antacids aren’t cutting it but your symptoms aren’t severe. They take longer to kick in than antacids (usually 30 to 60 minutes), so some people take an antacid for immediate relief and an H2 blocker for sustained control.
PPIs for Frequent or Severe Reflux
Proton pump inhibitors, or PPIs, are the strongest acid-suppressing medications available. Common names include omeprazole, esomeprazole, and lansoprazole. They work by shutting down the acid-producing pumps in your stomach lining, and they reduce acid output far more than H2 blockers do.
Timing matters with PPIs. Take them before a meal, preferably in the morning, because the medication needs to reach those acid pumps while they’re being activated by food. Taking a PPI after a meal or at random times makes it significantly less effective. A typical first course is eight weeks of once-daily use.
Long-term PPI use does carry some risks worth knowing about. Extended use has been linked to increased fracture risk, vitamin B12 deficiency, low magnesium levels, a higher rate of certain gut infections, and in rare cases, kidney problems. These risks are generally small for any individual, but they’re the reason PPIs are meant to be used at the lowest effective dose for the shortest necessary time. If you’ve been on a PPI for months, it’s reasonable to ask your doctor whether you still need it.
Alginates: A Physical Barrier Approach
Alginates work differently from every other option on this list. Instead of neutralizing acid or reducing its production, they create a gel-like barrier that floats on top of your stomach contents. This “raft” sits between your stomach and esophagus, physically blocking acid from splashing upward. One study found that alginates are more effective than standard antacids at treating GERD, likely because they address the mechanical problem (acid traveling upward) rather than just the chemical one (too much acid).
Alginate products are often combined with an antacid ingredient, giving you both the physical barrier and some acid neutralization. They’re available over the counter and are especially useful for reflux that hits when you lie down, since that’s when stomach contents are most likely to creep toward your esophagus.
Newer Prescription Options
A newer class of acid suppressors called potassium-competitive acid blockers (P-CABs) has entered the market, with vonoprazan being the most studied. These medications block the same acid pumps as PPIs but work faster and don’t need to be timed around meals as precisely, because they can shut down both active and resting pumps.
In head-to-head trials, vonoprazan outperformed some older, lower-potency PPIs. But when compared against higher-potency PPIs like esomeprazole at full dose, the difference disappeared. P-CABs haven’t shown clear superiority over well-dosed PPIs, so they’re currently most useful for people who haven’t responded well to standard PPI therapy rather than as a first choice.
Lifestyle Changes That Reduce Reflux
Medication works best alongside a few practical adjustments. Elevating the head of your bed is one of the most effective non-drug strategies. A wedge pillow angled at 30 to 45 degrees, raising your head six to 12 inches, helps gravity keep acid in your stomach while you sleep. Stacking regular pillows doesn’t work as well because it bends you at the waist rather than tilting your entire torso.
Eating smaller meals, finishing dinner at least two to three hours before lying down, and avoiding your personal trigger foods all make a measurable difference. Common triggers include fatty or fried foods, tomato-based sauces, citrus, chocolate, coffee, and alcohol, though triggers vary from person to person. Losing even a modest amount of weight, if you carry extra around your midsection, can reduce the pressure that pushes stomach contents upward.
Reflux During Pregnancy
Heartburn is extremely common in pregnancy, especially in the second and third trimesters, as the growing uterus pushes upward on the stomach. Calcium carbonate antacids are generally considered a first-line option, but medication safety during pregnancy is complicated. The risk of harm tends to be highest during the first trimester, and safety varies by ingredient and dose. Some antacid ingredients should be avoided entirely. Your provider can point you to the safest specific product for your stage of pregnancy.
Symptoms That Need More Than OTC Treatment
Most reflux responds well to the options above, but certain symptoms signal something that needs medical evaluation rather than self-treatment. Difficulty swallowing, unintentional weight loss, vomiting, signs of bleeding (dark stools or vomiting blood), chest pain, or anemia are all considered alarm symptoms. Reflux that persists despite eight weeks of daily PPI use also warrants further investigation. In these cases, doctors typically recommend an endoscopy to look directly at the esophagus and rule out complications like narrowing, ulceration, or precancerous changes.