Nexium vs. Zantac 360

See how Nexium and Zantac 360 compare on approved uses, dosing, side effects, and cost.

Key Takeaways

  • Nexium is a proton pump inhibitor that reduces stomach acid production for hours-long relief, while Zantac 360 is an H2 blocker that works faster but wears off sooner.

  • Nexium is FDA-approved to heal erosive esophagitis, treat H. pylori infection, and manage severe acid disorders, while Zantac 360 only treats occasional heartburn.

  • Zantac 360 is available over the counter at a much lower price, while Nexium offers prescription-strength options for more serious acid-related conditions.

Nexium vs. Zantac 360 Drug Summary

Nexium

Nexium (esomeprazole) is a proton pump inhibitor that blocks acid production at the source. It comes as a delayed-release capsule, oral suspension, or IV injection, taken once or twice daily depending on the condition. It treats everything from occasional heartburn to erosive esophagitis and H. pylori infection.

Zantac 360

Zantac 360 (famotidine) is an H2 receptor antagonist that reduces acid by blocking histamine signals in the stomach. It comes as an over-the-counter tablet taken as needed, either to relieve heartburn already happening or to prevent it before eating. It works faster than a PPI but its effect does not last as long.

Nexium vs. Zantac 360 Side Effects

Nexium

Most common
headache (up to 5.5%)
diarrhea (up to 4%)
abdominal pain (up to 4%)
nausea (>1%)

Zantac 360

Most common
headache (frequency not specified)
diarrhea (frequency not specified)
dizziness (frequency not specified)
constipation (frequency not specified)

Nexium vs. Zantac 360 Dosage

Nexium

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 20 mg once daily Weeks 1-4
Maximum dose 20 mg or 40 mg IV daily If needed
Dose changes 3 increases As tolerated

Zantac 360

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 10 mg as needed At the start
Maximum dose 20 mg as needed If needed
Dose changes 1 increase As tolerated

Nexium vs. Zantac 360 Indications

Nexium

Nexium treats a wide range of acid-related conditions, from short-term heartburn to erosive esophagitis and Zollinger-Ellison syndrome. It is also used alongside antibiotics to eradicate H. pylori infection and to reduce the risk of NSAID-related stomach ulcers. Some forms are approved for use in children as young as one month.

  • Healing of erosive esophagitis

  • Short-term GERD/heartburn treatment

  • H. pylori eradication (with antibiotics)

Zantac 360

Zantac 360 is approved to relieve heartburn caused by acid indigestion and sour stomach. It can also be taken ahead of trigger foods or drinks to prevent heartburn before it starts. It is intended for occasional use rather than chronic acid conditions.

  • Relieves occasional heartburn

  • Prevents heartburn before trigger meals

  • Eases acid indigestion and sour stomach

Nexium vs. Zantac 360 Pros and Cons

Nexium

Nexium offers stronger, longer-lasting acid suppression than an H2 blocker like Zantac 360, making it a better fit for erosive esophagitis or frequent GERD. It requires a prescription for its full range of uses, though lower-dose OTC versions exist. Long-term use carries risks like bone fracture and low magnesium that don't apply to short-term H2 blocker use.

Pros

  • Heals erosive esophagitis, not just symptoms

  • FDA-approved for H. pylori and Zollinger-Ellison syndrome

  • Available as IV for patients who can't take pills

  • Provides 24-hour acid control with once-daily dosing

Cons

  • Requires days to reach full effect, not for immediate relief

  • Long-term use linked to bone fracture and C. diff risk

  • Costs roughly $160 to $280 a month without insurance

  • Full-strength doses require a prescription

Zantac 360

Zantac 360 works faster than Nexium for occasional heartburn since it doesn't need days to build up in the body. It's sold over the counter at a fraction of Nexium's cost, but its relief doesn't last as long and it isn't approved for healing esophagitis damage. It's best suited for mild, infrequent symptoms rather than chronic acid conditions.

Pros

  • Starts working within an hour for fast relief

  • Available over the counter without a prescription

  • Costs roughly $8 to $15 a month

  • Can be taken as needed instead of daily

Cons

  • Does not heal erosive esophagitis damage

  • Effects wear off sooner than a PPI

  • Not approved for H. pylori or ulcer prevention

  • May need multiple doses per day for ongoing symptoms

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