If antacids aren’t controlling your heartburn or reflux, the problem may be more than simple excess stomach acid. Over-the-counter antacids neutralize acid that’s already in your stomach, but they don’t reduce acid production, don’t address non-acid reflux, and wear off quickly. The good news is there’s a clear ladder of next steps, from stronger medications to lifestyle changes to diagnostic testing that can pinpoint exactly what’s going on.
Why Antacids Stop Working
Antacids like calcium carbonate (Tums) and magnesium hydroxide (Milk of Magnesia) work by chemically neutralizing stomach acid on contact. They’re designed for occasional, mild heartburn. When symptoms become frequent or persistent, antacids simply can’t keep up. They don’t stop your stomach from producing acid in the first place, so relief is temporary and often incomplete.
There’s also the possibility that acid isn’t the main culprit. Reflux can involve bile and other digestive fluids from the small intestine that wash back into the stomach and esophagus. This bile reflux produces symptoms nearly identical to acid reflux, but neutralizing acid does nothing to address it. In other cases, the esophagus itself becomes hypersensitive, generating a burning sensation even when acid levels are normal. Patients labeled as having “refractory GERD” often turn out to have one of these less obvious mechanisms at work.
Step Up to Stronger Acid Suppression
The first practical move is switching from antacids to medications that actually reduce acid production. There are two main categories, and they work differently.
H2 blockers (famotidine, sold as Pepcid) reduce the signal that tells your stomach to make acid. They keep stomach pH suppressed for roughly four hours per dose and are available over the counter. They work well for mild to moderate symptoms, especially nighttime heartburn.
Proton pump inhibitors, or PPIs (omeprazole, lansoprazole, esomeprazole), are significantly more powerful. They shut down the acid-producing pumps in your stomach lining directly, maintaining reduced acid levels for 15 to 22 hours per day. In head-to-head comparisons, about 72 to 81% of patients on a PPI were pain-free at four weeks, compared to 60% on an H2 blocker. PPIs are the standard first-line treatment for persistent reflux and are taken once daily, 30 to 60 minutes before a meal.
If you’ve been using antacids and skipping these options, trying an over-the-counter PPI for eight weeks is the recommended starting point from the American College of Gastroenterology. Timing matters: take it before breakfast, not after symptoms start.
Optimize Before You Escalate
Many people who think PPIs “don’t work” are actually taking them incorrectly. PPIs need to be taken on an empty stomach before eating because food triggers the acid pumps, and the drug needs to be active when those pumps turn on. Taking a PPI at bedtime or after a meal significantly reduces its effectiveness.
If a single daily dose isn’t enough, your doctor may recommend splitting to twice daily, once before breakfast and once before dinner. The formal definition of refractory GERD is symptoms that persist despite eight weeks of twice-daily PPI therapy. Until you’ve hit that threshold with correct timing, there’s still room to improve with the same medication.
Lifestyle Changes That Actually Help
Medications work better when you reduce the mechanical pressure pushing stomach contents upward. A few changes have direct evidence behind them.
Elevating the head of your bed reduces nighttime acid exposure by using gravity to keep reflux in the stomach. Start with a 10-centimeter (about 4-inch) elevation using blocks under the bed’s headboard legs or a wedge pillow, not just extra pillows, which can bend you at the waist and make things worse. If that doesn’t help after a few weeks, increase to 20 centimeters (about 8 inches). The evidence for this intervention is modest, but the risk is zero and the benefit for nighttime symptoms can be noticeable.
Other practical changes: avoid eating within three hours of lying down, reduce meal size (large meals increase stomach pressure), and limit foods that relax the valve between your stomach and esophagus. Common triggers include alcohol, chocolate, peppermint, fatty foods, and caffeine, though individual triggers vary. Losing weight, if relevant, is one of the most effective long-term interventions because abdominal fat physically pushes on the stomach.
When It Might Not Be Acid Reflux at All
Laryngopharyngeal Reflux (Silent Reflux)
If your main symptoms are throat clearing, hoarseness, a persistent cough, a lump-in-the-throat sensation, or excess throat mucus rather than classic heartburn, you may have laryngopharyngeal reflux, or LPR. This happens when stomach contents reach the throat and voice box, and it often doesn’t cause the typical burning chest sensation. LPR tends to respond poorly to antacids and sometimes even to PPIs, because the throat lining is far more sensitive to even small amounts of reflux than the esophagus. Treatment may involve alginate-based products (like Gaviscon Advance), medications that reduce inappropriate opening of the lower esophageal valve, or behavioral therapy for related laryngeal sensitivity.
Functional Heartburn
Some people experience real, frequent burning sensations in the chest that look and feel exactly like reflux, but testing shows no abnormal acid exposure and no correlation between reflux events and symptoms. This is called functional heartburn, and it’s driven by visceral hypersensitivity, meaning the nerves in the esophagus overreact to normal stimuli. The diagnostic criteria require symptoms at least twice a week with no relief from PPIs and no evidence of actual reflux disease. Treatment shifts away from acid suppression entirely and toward medications that calm nerve signaling, similar to low-dose antidepressants used for other nerve-sensitivity conditions.
Diagnostic Testing for Persistent Symptoms
If your symptoms haven’t improved after eight weeks of optimized PPI therapy, the next step is testing to figure out what’s actually happening in your esophagus. The American College of Gastroenterology recommends endoscopy as the first diagnostic move, ideally after stopping PPIs for two to four weeks so any inflammation is visible.
Beyond endoscopy, pH monitoring measures actual acid exposure over 24 to 48 hours. A small sensor, either attached to a thin catheter through the nose or a wireless capsule clipped to the esophageal wall, records every time acid reaches the esophagus. This test is done off PPIs when doctors need to confirm whether you truly have reflux disease, or on PPIs when they need to see whether the medication is adequately controlling acid in someone with an established diagnosis.
Impedance-pH monitoring goes further by detecting non-acid reflux as well, capturing episodes where bile or weakly acidic fluid reaches the esophagus. This is particularly useful for patients whose symptoms persist on full-dose PPIs, because it can reveal whether the problem is ongoing reflux that isn’t acidic or whether reflux isn’t involved at all.
Surgical Options When Medication Fails
For people with confirmed GERD that doesn’t respond adequately to medication, or who want to stop taking daily pills long-term, surgical options can physically reinforce the weakened valve between the stomach and esophagus.
Nissen fundoplication is the traditional approach, where the top of the stomach is wrapped around the lower esophagus to tighten the valve. It has decades of evidence behind it. A newer option, magnetic sphincter augmentation (the LINX device), involves a ring of small magnetic beads placed around the valve. The magnets are strong enough to keep the valve closed against reflux but open normally when you swallow.
Both procedures eliminate the need for PPIs in about 81% of patients. The key difference is in side effects: patients with the magnetic device retain the ability to belch (95% vs. 66%) and vomit (94% vs. 50%) compared to those with fundoplication, which matters more than it sounds. Inability to belch or vomit can cause significant bloating and discomfort. Rates of post-surgical swallowing difficulty and gas/bloating were statistically similar between the two procedures.
Surgery is generally considered only after diagnostic testing confirms that reflux is genuinely the cause of symptoms. Operating on functional heartburn or esophageal hypersensitivity won’t help and can create new problems.
Red Flags That Need Prompt Evaluation
Most reflux is uncomfortable but not dangerous. However, certain symptoms alongside your heartburn warrant faster evaluation rather than continuing to troubleshoot on your own. These include difficulty swallowing or pain when swallowing, unintentional weight loss, vomiting blood or passing black stools, persistent vomiting, and chest pain (which should always be evaluated to rule out cardiac causes first). These symptoms typically prompt an endoscopy without the usual eight-week medication trial, because they can signal complications like strictures, ulcers, or other conditions that need direct visualization.