What it's used for
This medication is used to treat high blood pressure and to lower the risk of cardiovascular events like strokes and heart attacks. It is also used to treat kidney disease in patients with type 2 diabetes and high blood pressure.
Source: U.S. FDA-approved prescribing information (openFDA).
Typical dosing
The recommended starting dose for high blood pressure is 150 mg once daily, while the dose for diabetic kidney disease is 300 mg once daily.
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
This medication can cause injury and death to a developing fetus and should be discontinued as soon as pregnancy is detected.
Common side effects
Common side effects include high potassium levels, dizziness, and dizziness or low blood pressure when standing up.
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 heart, blood pressure & cholesterol medications covered at $0 with an active Tab membership.
Irbesartan cost without insurance
Cash prices for Irbesartan 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.
Irbesartan 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.
Irbesartan dosage and administration
Indication Dose Hypertension ( 2.2 ) 150 to 300 mg once daily Diabetic Nephropathy ( 2.3 ) 300 mg once daily 2.1 General Considerations Irbesartan tablets may be administered with other antihypertensive agents and with or without food. 2.2 Hypertension The recommended initial dose of irbesartan tablets is 150 mg once daily. The dosage can be increased to a maximum dose of 300 mg once daily as needed to control blood pressure [see Clinical Studies (14.1) ]. 2.3 Nephropathy in Type 2 Diabetic Patients The recommended dose is 300 mg once daily [see Clinical Studies (14.2) ].
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.
Irbesartan side effects
The following important adverse reactions are described elsewhere in the labeling: Hypotension in Volume or Salt-Depleted Patients [see Warnings and Precautions (5.2) ] Impaired Renal Function [see Warnings and Precautions (5.3) ] Nephropathy in type 2 diabetic patients: The most common adverse reactions which were more frequent than placebo were hyperkalemia dizziness, orthostatic dizziness, and orthostatic hypotension. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Solco Healthecare US LLC. at 1-866-257-2597 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.
Irbesartan drug interactions
Lithium: Risk of lithium toxicity. ( 7 ) Nonsteroidal Anti-inflammatory Drugs (NSAIDs) and COX-2 inhibitors: Increased risk of renal impairment. Reduced antihypertensive effects. ( 7 ) Dual blockade of the renin-angiotensin system: Increased risk of renal impairment, hypotension, and hyperkalemia. ( 7 ) 7.1 Agents Increasing Serum Potassium Coadministration of irbesartan tablets with other drugs that raise serum potassium levels may result in hyperkalemia, sometimes severe. Monitor serum potassium in such patients. 7.2 Lithium Increases in serum lithium concentrations and lithium toxicity have been reported with concomitant use of irbesartan and lithium. Monitor lithium levels in patients receiving irbesartan and lithium.
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 irbesartan
Irbesartan tablets are contraindicated in patients who are hypersensitive to any component of this product. Do not coadministrate aliskiren with irbesartan tablets in patients with diabetes. Hypersensitivity to any component of this product. ( 4 ) Coadministration with aliskiren in patients with diabetes. ( 4 )
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 irbesartan covered at $0 with Tab?
Yes. Irbesartan 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 irbesartan 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 an irbesartan 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 irbesartan cost without insurance?
Without insurance, retail cash prices for irbesartan vary by pharmacy, strength and quantity. Irbesartan 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 irbesartan?
For medications on Tab's covered list, a Tab membership is the cheapest route: covered strengths of irbesartan 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 irbesartan?
Indication Dose Hypertension ( 2.2 ) 150 to 300 mg once daily Diabetic Nephropathy ( 2.3 ) 300 mg once daily 2.1 General Considerations Irbesartan tablets may be administered with other antihypertensive agents and with or without food. 2.2 Hypertension The recommended initial dose of irbesartan tablets is 150 mg once daily. (FDA-approved label, retrieved 2026-09-15. Your clinician sets your dose.)
What are the side effects of irbesartan?
The following important adverse reactions are described elsewhere in the labeling: Hypotension in Volume or Salt-Depleted Patients [see Warnings and Precautions (5.2) ] Impaired Renal Function [see Warnings and Precautions (5.3) ] Nephropathy in type 2 diabetic patients: The most common adverse reactions which were more frequent than placebo were hyperkalemia dizziness, orthostatic dizziness, and orthostatic hypotension. (FDA-approved label, retrieved 2026-09-15.)
What interacts with irbesartan?
Lithium: Risk of lithium toxicity. ( 7 ) Nonsteroidal Anti-inflammatory Drugs (NSAIDs) and COX-2 inhibitors: Increased risk of renal impairment. Reduced antihypertensive effects. ( 7 ) Dual blockade of the renin-angiotensin system: Increased risk of renal impairment, hypotension, and hyperkalemia. (FDA-approved label, retrieved 2026-09-15. Tell your clinician about every medication and supplement you take.)
Irbesartan 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
Start your membership → Compare plansTab is a membership and prescription-discount program, not insurance. A licensed clinician must prescribe any medication. Cancel anytime — no renewal.