Is taking Dexilant (dexlansoprazole) 60 mg twice daily (bid) appropriate?

Dexilant 60 mg Twice Daily is NOT Appropriate

Dexilant (dexlansoprazole) 60 mg twice daily is not FDA-approved and should not be used; the FDA label explicitly reports serious adverse events of hypertension with this dosing regimen, and current guidelines recommend stepping down patients on twice-daily PPI dosing to once-daily therapy 1.

Key Evidence Against BID Dosing

FDA Safety Data

The FDA drug label clearly documents that:

• Serious adverse events of hypertension have been reported with Dexilant 60 mg twice daily 1
• Nonserious adverse reactions with this dose include hot flashes, contusion, oropharyngeal pain, and weight loss 1
• Multiple doses of 120 mg daily (equivalent to 60 mg BID) were studied but are not FDA-approved 1

Guideline Recommendations

The 2022 AGA Clinical Practice Update on PPI de-prescribing explicitly states:

• Most patients on twice-daily PPI dosing should be stepped down to once-daily PPI 2
• Double-dose PPIs (standard dose twice daily) have not been studied in any RCT and are not FDA-approved 2
• Higher-dose PPIs increase costs and have been more strongly associated with complications including community-acquired pneumonia, hip fracture, and C. difficile infection 2

Appropriate Dosing Strategy

Standard Approach

• Start with Dexilant 60 mg once daily (30-60 minutes before a meal) 3
• Reassess after 4-8 weeks 3
• If inadequate response, consider switching to a more potent PPI or one less metabolized through CYP2C19 (like esomeprazole or rabeprazole) once daily 3

When Higher Acid Suppression is Needed

Rather than doubling Dexilant to BID:

• Switch to a different once-daily PPI with better acid suppression
• Consider potassium-competitive acid blockers when available 3
• Evaluate for objective GERD confirmation with endoscopy and pH monitoring if symptoms persist 3

Clinical Pitfalls to Avoid

1. Never assume BID dosing is safe just because once-daily dosing is approved
2. Document the specific indication for any PPI use - without ongoing indication, only harm can occur 2
3. Patients with complicated GERD (severe erosive esophagitis LA grade C/D, esophageal ulcer, peptic stricture) may need chronic once-daily PPI but still not BID dosing 2

Bottom Line

Use Dexilant 60 mg once daily only. The twice-daily regimen carries documented serious adverse events, lacks FDA approval, and contradicts current guideline recommendations to step down rather than escalate PPI dosing 2, 1.