Compare Medicines
Compare two medicines side-by-side: halal status, inactive ingredients that differ, and pharmacist questions — free, cited, and private.
Pepcid AC 20 mg Tablet (famotidine)
- Form
- Tablet (film-coated) · 20 mg
- Market
- US
- Confidence
- Medium
- Lactose Looks Halal
- Microcrystalline Cellulose Looks Halal
- Hypromellose (HPMC) Looks Halal
- Magnesium Stearate Uncertain
- Titanium Dioxide Looks Halal
- Iron Oxide (colorant) Looks Halal
- Polyethylene Glycol (PEG / Macrogol) Looks Halal
Tums Antacid (Calcium Carbonate 500 mg)
- Form
- Chewable tablet · 500 mg
- Market
- US
- Confidence
- Medium
- Sucrose Looks Halal
- Starch (Maize/Potato) Looks Halal
- Talc Looks Halal
- Magnesium Stearate Uncertain
Comparison summary
Pepcid AC 20 mg Tablet (famotidine) is Uncertain with Medium confidence. Tums Antacid (Calcium Carbonate 500 mg) is Uncertain with Medium confidence. They share 1 inactive ingredients in our database and differ on 9 others.
Cleaner halal profile in this pair: Tums Antacid (Calcium Carbonate 500 mg) (uncertain) — confirm equivalence and dosing with your clinician before switching.
Inactive ingredient differences
1 shared · 6 only in Pepcid AC 20 mg Tablet (famotidine) · 3 only in Tums Antacid (Calcium Carbonate 500 mg)
Only in Pepcid AC 20 mg Tablet (famotidine)
Only in Tums Antacid (Calcium Carbonate 500 mg)
Shared ingredients (1) appear in both products — open each medicine report for the full list.
Questions about this comparison
- How do Pepcid AC 20 mg Tablet (famotidine) and Tums Antacid (Calcium Carbonate 500 mg) compare for halal status?
- Pepcid AC 20 mg Tablet (famotidine): Uncertain (Medium confidence). Tums Antacid (Calcium Carbonate 500 mg): Uncertain (Medium confidence). RxHalal does not issue religious rulings — use this to ask your pharmacist about sources.
- Which inactive ingredients differ between these two medicines?
- Only in Pepcid AC 20 mg Tablet (famotidine): Lactose, Microcrystalline Cellulose, Hypromellose (HPMC), Titanium Dioxide, Iron Oxide (colorant), Polyethylene Glycol (PEG / Macrogol). Only in Tums Antacid (Calcium Carbonate 500 mg): Sucrose, Starch (Maize/Potato), Talc. Shared: 1 ingredients.
- What should I ask my pharmacist when comparing these medicines?
- Is the magnesium stearate in this product plant-derived? Can you confirm the source with the manufacturer?
- Is Tums Antacid (Calcium Carbonate 500 mg) a halal-friendlier option than Pepcid AC 20 mg Tablet (famotidine)?
- In our database, Tums Antacid (Calcium Carbonate 500 mg) ranks cleaner (Fewer flagged excipients (1 vs 2).). Confirm equivalence and dosing with your clinician — not a fatwa.
Clinician-friendly share summary
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