GlobalRPh Renal Dosing Masterv6.6
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Glipizide (Glucotrol) and glyburide

GlobalRPh source pageBase record retrieved 2026-09-05See the evidence for this drug1 sources available - open source summaries, references and comparisons
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Usual Dosing - Glucotrol

Start 5 mg before breakfast; geriatric patients or those with liver disease may start at 2.5 mg. Titrate by 2.5 to 5 mg according to glucose response, allowing at least several days between changes. Divide the dose if once-daily response is unsatisfactory. Maximum recommended once-daily dose 15 mg; larger daily doses should be divided before meals with adequate calories. Maximum total 40 mg/day. Some respond once daily, others to divided doses; >30 mg/day has been given twice daily to long-term patients.

Usual Dosing - Glyburide

DiaBeta initial therapy: 2.5 to 5 mg daily with breakfast or first main meal; sensitive patients start 1.25 mg. Improper dosage can cause hypoglycemia; poor dietary/drug adherence can impair response. Transfer conservatively from another oral agent, starting 2.5 to 5 mg daily. Except for chlorpropamide, no transition period/priming dose is needed. After chlorpropamide, take particular care for 2 weeks because prolonged retention and overlapping effects may cause hypoglycemia.

The source insulin-conversion regimens for some type 2 patients: <20 insulin units/day, try glyburide 2.5 to 5 mg once daily; 20 to 40 units/day, 5 mg daily; >40 units/day, start 5 mg daily while reducing insulin by 50%, followed by progressive insulin withdrawal and glyburide increases of 1.25 to 2.5 mg every 2 to 10 days. Hypoglycemia can occur while both are used.

Maintenance 1.25 to 20 mg/day in one or divided doses. Increase by no more than 2.5 mg at weekly intervals according to glucose. No exact equivalence to other oral agents; even after maximum-dose sulfonylurea, initial glyburide must not exceed 5 mg. The source describes 5 mg glyburide as approximately comparable in glucose control to chlorpropamide 250 to 375 mg, tolazamide 250 to 375 mg, acetohexamide 500 to 750 mg, or tolbutamide 1000 to 1500 mg.

During insulin withdrawal, the historical source advises blood-glucose and urinary-acetone testing at least three times daily with reporting to the physician; urine glucose is less desirable. It states that persistent acetonuria with glycosuria indicates type 1 diabetes requiring insulin. Maximum recommended glyburide 20 mg/day.

Renal Dosing

Glucotrol and glyburide package-insert comments: in elderly, debilitated or malnourished patients, and those with impaired renal or hepatic function, initial and maintenance dosing should be conservative to avoid hypoglycemic reactions.

Hemodialysis

See the conservative-dosing comment above.

Source revision: Historical source; revision not established here | Retrieved: 2026-09-05. Retrieval date is not the revision date.

Source: https://globalrph.com/renal/glucotrol-and-glyburide/

Scope: Preserved historical source; no fresh clinical approval GlobalRPh v6.6.

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Other formulations / related references (2)

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Glipizide - immediate-release tabletsRelated reference only; not an interchangeable dose or indication.Glipizide - extended-release tabletsRelated reference only; not an interchangeable dose or indication.
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Retrieved: 2026-09-05

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This is a two-drug historical source page, not a combination product. Insulin conversion and diagnostic wording are original source material, not newly validated individualized treatment advice.

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Original GlobalRPh protocol

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Usual Dosing - Glucotrol

Start 5 mg before breakfast; geriatric patients or those with liver disease may start at 2.5 mg. Titrate by 2.5 to 5 mg according to glucose response, allowing at least several days between changes. Divide the dose if once-daily response is unsatisfactory. Maximum recommended once-daily dose 15 mg; larger daily doses should be divided before meals with adequate calories. Maximum total 40 mg/day. Some respond once daily, others to divided doses; >30 mg/day has been given twice daily to long-term patients.

GRPH-glucotrol-and-glyburide-01 · Source section: Usual Dosing - GlucotrolRenal section finder

Usual Dosing - Glyburide

DiaBeta initial therapy: 2.5 to 5 mg daily with breakfast or first main meal; sensitive patients start 1.25 mg. Improper dosage can cause hypoglycemia; poor dietary/drug adherence can impair response. Transfer conservatively from another oral agent, starting 2.5 to 5 mg daily. Except for chlorpropamide, no transition period/priming dose is needed. After chlorpropamide, take particular care for 2 weeks because prolonged retention and overlapping effects may cause hypoglycemia.

The source insulin-conversion regimens for some type 2 patients: <20 insulin units/day, try glyburide 2.5 to 5 mg once daily; 20 to 40 units/day, 5 mg daily; >40 units/day, start 5 mg daily while reducing insulin by 50%, followed by progressive insulin withdrawal and glyburide increases of 1.25 to 2.5 mg every 2 to 10 days. Hypoglycemia can occur while both are used.

Maintenance 1.25 to 20 mg/day in one or divided doses. Increase by no more than 2.5 mg at weekly intervals according to glucose. No exact equivalence to other oral agents; even after maximum-dose sulfonylurea, initial glyburide must not exceed 5 mg. The source describes 5 mg glyburide as approximately comparable in glucose control to chlorpropamide 250 to 375 mg, tolazamide 250 to 375 mg, acetohexamide 500 to 750 mg, or tolbutamide 1000 to 1500 mg.

During insulin withdrawal, the historical source advises blood-glucose and urinary-acetone testing at least three times daily with reporting to the physician; urine glucose is less desirable. It states that persistent acetonuria with glycosuria indicates type 1 diabetes requiring insulin. Maximum recommended glyburide 20 mg/day.

GRPH-glucotrol-and-glyburide-02 · Source section: Usual Dosing - GlyburideRenal section finder

Renal Dosing

Glucotrol and glyburide package-insert comments: in elderly, debilitated or malnourished patients, and those with impaired renal or hepatic function, initial and maintenance dosing should be conservative to avoid hypoglycemic reactions.

GRPH-glucotrol-and-glyburide-03 · Source section: Renal DosingRenal section finder

Hemodialysis

See the conservative-dosing comment above.

GRPH-glucotrol-and-glyburide-04 · Source section: HemodialysisRenal section finder

Provenance and preservation

Additional summaries stored on this page: 0 official-label, 0 RX List, 0 professional, 0 handbook. Empty additional-source groups are not shown. A missing layer is not a no-adjustment recommendation.

Original source
https://globalrph.com/renal/glucotrol-and-glyburide/
Source retrieval
2026-09-05. This is not the source publication or label revision date.
Original source type
globalrph individual
Local text SHA-256
bf2073298c927c1444cf4665d5aa12092322a7d30e27c436b691b2d706c5e492
Import versus clinical validation
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The original individual GlobalRPh pages commonly cite NIH/NLM DailyMed and instruct readers to review the applicable package insert for updates. That historical reference is preserved as context; it is not counted as an independently retrieved current label.

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