Famotidine vs. Zantac 360
See how Famotidine and Zantac 360 compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Famotidine and Zantac 360 both contain the same active ingredient, so they work identically in the body.
Prescription famotidine treats ulcers, GERD, and erosive esophagitis, while Zantac 360 is sold over-the-counter only for occasional heartburn.
Zantac 360 costs less and needs no prescription, but it cannot treat the tissue damage that prescription-strength famotidine can.
Famotidine vs. Zantac 360 Drug Summary
Famotidine
Famotidine is an H2-receptor blocker prescribed for duodenal and gastric ulcers, GERD, erosive esophagitis, and rare acid-overproduction conditions like Zollinger-Ellison syndrome. It comes as a tablet, oral suspension, or IV injection, with doses from 20 mg to 40 mg depending on the condition being treated.
Zantac 360
Zantac 360 is the over-the-counter version of famotidine, an H2 blocker sold only to relieve or prevent occasional heartburn from acid indigestion. It comes as a film-coated tablet taken as needed at 10 mg or 20 mg, without a prescription.
Famotidine vs. Zantac 360 Side Effects
Famotidine
Zantac 360
Famotidine vs. Zantac 360 Dosage
Famotidine
Zantac 360
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg twice daily | Weeks 1-6 |
| Maximum dose | 40 mg once daily | Weeks 1-8 |
| Dose changes | 1 increase | As tolerated |
| 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 |
Famotidine
| STAGE | DOSE | WHEN |
| Starting dose | 20 mg twice daily | Weeks 1-6 |
| Maximum dose | 40 mg once daily | Weeks 1-8 |
| Dose changes | 1 increase | As tolerated |
Zantac 360
| 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 |
Famotidine vs. Zantac 360 Indications
Famotidine
Famotidine is FDA-approved for a range of acid-related conditions beyond simple heartburn, including duodenal and gastric ulcers and erosive esophagitis caused by GERD. It is also used for rare conditions that cause excess stomach acid, such as Zollinger-Ellison syndrome.
Duodenal ulcer treatment and maintenance
Benign gastric ulcer treatment
GERD treatment
Erosive esophagitis due to GERD
Zantac 360
Zantac 360 is FDA-approved only for occasional heartburn caused by acid indigestion or sour stomach. It is meant for short-term relief or prevention before trigger foods, not for diagnosed conditions like ulcers or esophagitis.
Relieves heartburn from acid indigestion
Prevents heartburn before trigger foods or drinks
Not intended for diagnosed GI conditions
Not for children under 12 without a doctor
Famotidine vs. Zantac 360 Pros and Cons
Famotidine
Prescription famotidine treats a broader range of confirmed GI conditions, including ulcers and erosive esophagitis, and comes in higher doses and IV form for hospital use. Coverage and price vary widely depending on insurance and the strength prescribed.
Pros
Treats erosive esophagitis and ulcers, not just symptoms
Approved for rare hypersecretory conditions like Zollinger-Ellison syndrome
Available in higher doses (up to 40 mg) and IV form for severe cases
Often covered by insurance at low copays as a generic
Cons
Requires a doctor visit and prescription for stronger doses
Needs dose adjustment in moderate to severe kidney impairment
Costs roughly $10 to $90 a month out of pocket, depending on dose and coverage
Carries a warning about confusion or hallucinations in elderly patients
Zantac 360
Zantac 360 offers the same active ingredient as prescription famotidine but only for occasional heartburn, sold without a doctor visit. It is meant for short-term use and does not treat structural GI damage.
Pros
Available without a prescription at pharmacies and grocery stores
Simple as-needed dosing at 10 mg or 20 mg
Costs roughly $8 to $15 a month out of pocket, before any coupons
No doctor visit needed for occasional symptom relief
Cons
Not approved for ulcers, erosive esophagitis, or Zollinger-Ellison syndrome
Label instructs stopping use if symptoms last more than 14 days
Not intended for children under 12 without a doctor's guidance
Offers no clinical advantage over other OTC famotidine products like Pepcid AC
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