What the FDA labels say about taking them together
Bisacodyl and magnesium sulfate/potassium chloride/sodium sulfate
Magnesium sulfate/potassium chloride/sodium sulfate's FDA label of January 31, 2026 names bisacodyl in its drug interactions section; the bisacodyl label PlainMeds reads does not name magnesium sulfate/potassium chloride/sodium sulfate. The magnesium sulfate/potassium chloride/sodium sulfate label: “Avoid use of stimulant laxatives while taking SUTAB.”
Check it at the source: the bisacodyl FDA label on DailyMed (effective April 8, 2025); the magnesium sulfate/potassium chloride/sodium sulfate FDA label on DailyMed (effective January 31, 2026, Azurity Pharmaceuticals, Inc.).
What does the bisacodyl label say about magnesium sulfate/potassium chloride/sodium sulfate?
Bisacodyl's label (effective April 8, 2025) does not name magnesium sulfate/potassium chloride/sodium sulfate in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Dulcolax Stimulant Laxative), Chattem, Inc., effective April 8, 2025 (SPL set f1e4b28a-ed74-4eff-bd10-b2bfaf7483b0), via openFDA; the full label on DailyMed
What does the magnesium sulfate/potassium chloride/sodium sulfate label say about bisacodyl?
Magnesium sulfate/potassium chloride/sodium sulfate label, drug interactionsAvoid use of stimulant laxatives (e.g., bisacodyl, sodium picosulfate) while taking SUTAB [see Warnings and Precautions ( 5.5 )].
Source: FDA drug label (SUTAB), Azurity Pharmaceuticals, Inc., effective January 31, 2026 (SPL set c020e973-dccf-4862-999e-17db6209a48a), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Bisacodyl | Magnesium sulfate/potassium chloride/sodium sulfate | |
|---|---|---|
| Labeled for | Constipation | n/a |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | $0.320 per suppository 10 mg suppository | $6.74 per tablet 1.479-0.225-0.188 g tablet |
| Shortage now | No current entry | No current entry |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once