What it's used for
Glyburide and metformin hydrochloride tablets are used alongside diet and exercise to improve blood sugar control in adults with type 2 diabetes mellitus.
Source: U.S. FDA-approved prescribing information (openFDA).
Typical dosing
The medication is given in divided doses twice daily with meals, with starting doses depending on previous treatment history.
Dosing shown here is the general FDA-labeled range. Your prescribing clinician determines the exact dose, form, and schedule for you — this is not a substitute for medical advice.
Boxed warning / key safety info
Postmarketing cases of metformin-associated lactic acidosis can result in death, hypothermia, low blood pressure, and slow heart rhythms.
Common side effects
The most common adverse reactions occurring in more than 5% of patients include diarrhea, headache, nausea, vomiting, abdominal pain, and dizziness.
Covered strengths on the Tab $0 list
Covered at $0 with an active Tab membership when filled at a participating pharmacy nationwide or through mail order. A licensed clinician must prescribe the medication.
Related medications
Other diabetes medications covered at $0 with an active Tab membership.
Glyburide/Metformin cost without insurance
Cash prices for Glyburide/Metformin without insurance vary widely by pharmacy, strength and quantity — the same prescription can cost very different amounts at two pharmacies in the same town. That is the problem a membership solves.
Glyburide/Metformin is on Tab's covered $0 generic list. With an active Tab membership, every covered strength is $0 — not a percentage off, not a coupon that changes month to month — at participating pharmacies nationwide or through mail order. You do not need insurance, and Tab works whether or not you have a health plan.
Tab is a membership, not insurance. Covered medications require a prescription from a licensed clinician.
Glyburide/Metformin dosage and administration
Adult Dosage : • Give glyburide and metformin hydrochloride tablets in divided doses, twice daily, with meals. ( 2.1 ) • For patients not treated with either glyburide (or another sulfonylurea) or metformin HCl, initiate treatment with another formulation with a dose of 1.25 mg glyburide and 250mg metformin HCl orally, once or twice daily with meals. ( 2.1 ) • For patients not adequately controlled on either glyburide (or another sulfonylurea) or metformin HCl alone, the recommended starting dose is 2.5 mg/500 mg or 5 mg/500 mg orally twice daily with meals. ( 2.1 ) • For patients previously treated with a combination therapy of glyburide (or another sulfonylurea) and metformin HCl, the starting dose should not exceed the daily dose of glyburide (or equivalent dose of another sulfonylurea) and metformin HCl already being taken.
Excerpt from the FDA-approved prescribing information (openFDA), retrieved 2026-09-15. Your prescribing clinician decides the exact dose, form and schedule for you — this is not medical advice.
Glyburide/Metformin side effects
The following adverse reactions are also discussed elsewhere in the labeling: • Lactic Acidosis [see Boxed Warning and Warnings and Precautions ( 5.1 ) ] • Hypoglycemia [see Warnings and Precautions ( 5.2 ) ] • Cardiovascular mortality [see Warnings and Precautions ( 5.3 ) ] • Hemolytic anemia [see Warnings and Precautions ( 5.4 ) ] • Vitamin B 12 Deficiency [ see Warnings and Precautions ( 5.5 ) ] Most common (>5%) adverse reactions to glyburide and metformin hydrochloride tablets diarrhea, headache, nausea/vomiting, abdominal pain, and dizziness. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Avet Pharmaceuticals Inc. at 1-866-901-DRUG (3784) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .
Excerpt from the FDA-approved prescribing information (openFDA), retrieved 2026-09-15. This is not a complete list. Report side effects to your clinician, and seek care for anything severe or unexpected.
Glyburide/Metformin drug interactions
Table 3 presents clinically significant drug interactions with glyburide and metformin hydrochloride. Table 3: Clinically Significant Drug Interactions with Glyburide and Metformin Hydrochloride Carbonic Anhydrase Inhibitors Clinical Impact: Carbonic anhydrase inhibitors frequently cause a decrease in serum bicarbonate and induce non-anion gap, hyperchloremic metabolic acidosis. Concomitant use of these drugs with glyburide and metformin hydrochloride may increase the risk for lactic acidosis. Intervention: Consider more frequent monitoring of these patients. Examples: Topiramate, zonisamide, acetazolamide and dichlorphenamide.
Excerpt from the FDA-approved prescribing information (openFDA), retrieved 2026-09-15. Tell your clinician and pharmacist about every medication, supplement and over-the-counter product you take.
Who should not take glyburide/metformin
Glyburide and metformin hydrochloride tablets is contraindicated in patients with: • Severe renal impairment (eGFR below 30 mL/min/1.73 m 2 ) [ see Warnings and Precautions ( 5.1 ) ]. • Hypersensitivity to metformin or glyburide. • Acute or chronic metabolic acidosis, including diabetic ketoacidosis, with or without coma. • Concomitant administration of bosentan [ see Drug Interactions ( 7 ) ]. • Severe renal impairment (eGFR below 30 mL/min/1.73 m 2 ) ( 4 , 5.1 ) • Hypersensitivity to metformin or glyburide. ( 4 ) • Acute or chronic metabolic acidosis, including diabetic ketoacidosis, with or without coma. ( 4 ) • Concomitant administration of bosentan. ( 4 , 7 )
Excerpt from the FDA-approved prescribing information (openFDA), retrieved 2026-09-15. Whether this medication is appropriate for you is a clinical decision made by your prescribing clinician.
Common questions
Is glyburide/Metformin covered at $0 with Tab?
Yes. Glyburide/Metformin is on Tab's covered $0 generic list — every covered strength is $0 with an active membership, at participating pharmacies nationwide or by mail order.
Do I need insurance to get glyburide/Metformin through Tab?
No. Tab is a membership, not insurance. Covered medications are $0 with an active membership whether or not you have a health plan.
How do I get a glyburide/Metformin prescription with Tab?
Book a video visit with a licensed Tab clinician (unlimited visits are included with membership). If it's clinically appropriate, they send the prescription to your chosen participating pharmacy or by mail order.
How much does glyburide/metformin cost without insurance?
Without insurance, retail cash prices for glyburide/metformin vary by pharmacy, strength and quantity. Glyburide/Metformin is on Tab's covered $0 generic list, so every covered strength is $0 with an active Tab membership at participating pharmacies nationwide or by mail order.
What is the cheapest way to get glyburide/metformin?
For medications on Tab's covered list, a Tab membership is the cheapest route: covered strengths of glyburide/metformin are $0 with an active membership, and unlimited video visits with a licensed clinician are included, so the visit that produces the prescription is covered too.
What is the usual dose of glyburide/metformin?
Adult Dosage : • Give glyburide and metformin hydrochloride tablets in divided doses, twice daily, with meals. ( 2.1 ) • For patients not treated with either glyburide (or another sulfonylurea) or metformin HCl, initiate treatment with another formulation with a dose of 1.25 mg glyburide and 250mg metformin HCl orally, once or twice daily with meals. (FDA-approved label, retrieved 2026-09-15. Your clinician sets your dose.)
What are the side effects of glyburide/metformin?
The following adverse reactions are also discussed elsewhere in the labeling: • Lactic Acidosis [see Boxed Warning and Warnings and Precautions ( 5.1 ) ] • Hypoglycemia [see Warnings and Precautions ( 5.2 ) ] • Cardiovascular mortality [see Warnings and Precautions ( 5.3 ) ] • Hemolytic anemia [see Warnings and Precautions ( 5.4 ) ] • Vitamin B 12 Deficiency [ see Warnings and Precautions ( 5.5 ) ] Most common (>5%) adverse reactions to glyburide and metformin hydrochloride tablets diarrhea, headache, nausea/vomiting, abdominal pain, and dizziness. (FDA-approved label, retrieved 2026-09-15.)
What interacts with glyburide/metformin?
Table 3 presents clinically significant drug interactions with glyburide and metformin hydrochloride. Table 3: Clinically Significant Drug Interactions with Glyburide and Metformin Hydrochloride Carbonic Anhydrase Inhibitors Clinical Impact: Carbonic anhydrase inhibitors frequently cause a decrease in serum bicarbonate and induce non-anion gap, hyperchloremic metabolic acidosis. (FDA-approved label, retrieved 2026-09-15. Tell your clinician about every medication and supplement you take.)
Glyburide/Metformin is $0 on the covered list
Members pay $0 for covered generics at participating pharmacies nationwide or by mail order — plus unlimited virtual primary care, urgent care and dermatology visits. No insurance needed.
Solo $49/mo · Family $119/mo for up to 4 people · Family+ $149/mo for up to 8
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