Head-to-head clinical analysis & difference comparison: details on mechanism of action, dosing, half-life, interactions, and maternal-fetal safety.
AZILSARTAN MEDOXOMIL vs BYVALSON
Clinician-reviewed, head-to-head comparison of mechanism, dosing, pharmacokinetics, and safety profiles.
Last clinically reviewed: July 2026 · OpiCalc Medical Review Team
Angiotensin II receptor blocker (ARB) that selectively inhibits angiotensin II binding to AT1 receptors, reducing vasoconstriction, aldosterone secretion, and sympathetic activity.
Valsartan is an angiotensin II receptor blocker (ARB) that selectively binds to the AT1 receptor, inhibiting angiotensin II-mediated vasoconstriction and aldosterone secretion. It also reduces blood pressure and causes vasodilation.
Treatment of hypertension (FDA-approved),Off-label: heart failure, diabetic nephropathy
FDA-approved for the treatment of hypertension, heart failure (NYHA class II-IV), and to reduce cardiovascular mortality in stable post-myocardial infarction patients with left ventricular dysfunction or failure.,Off-label uses include diabetic nephropathy, prevention of atrial fibrillation recurrence, and migraine prophylaxis.
40 mg orally once daily. May increase to 80 mg once daily if needed.
160 mg orally once daily.
Terminal half-life approximately 11 hours; supports once-daily dosing with sustained antihypertensive effect over 24 hours.
Terminal half-life 10-12 hours; allows once-daily dosing; extended in severe renal impairment (up to 20 hours)
Primarily metabolized by CYP2C9 to inactive metabolites; also undergoes esterase-mediated hydrolysis to azilsartan.
Valsartan is primarily metabolized by CYP2C9 and minimally by CYP3A4. It undergoes glucuronidation via UGT1A3, UGT1A9, and UGT2B7. The major metabolite is inactive.
Biliary/fecal (55% unchanged), renal (42% as inactive metabolites, <1% unchanged)
Renal: 60% unchanged; Biliary/Fecal: 40% as metabolites; total clearance ~30 L/h
High (>99%) to serum albumin.
95% bound primarily to albumin
Vd of about 16 L (0.23 L/kg for a 70 kg individual); indicates limited extravascular distribution.
Vd 8-10 L/kg; suggests extensive extravascular distribution
Oral bioavailability approximately 60% under fed conditions (food reduces absorption); absolute bioavailability not determined in humans.
Oral: 50% (range 40-60%); food reduces peak concentration but not AUC
No dose adjustment required for GFR ≥15 m L/min/1.73 m². Not recommended for GFR <15 m L/min/1.73 m² due to lack of data.
No dosage adjustment required for GFR ≥30 m L/min; not recommended for GFR <30 m L/min.
No dose adjustment required for mild to moderate hepatic impairment (Child-Pugh A and B). Not recommended for severe hepatic impairment (Child-Pugh C) due to lack of data.
Contraindicated in severe hepatic impairment (Child-Pugh class C); no adjustment for mild to moderate impairment (Child-Pugh A or B).
Not approved for use in pediatric patients (safety and efficacy not established).
Safety and efficacy not established in pediatric patients.
No specific dose adjustment recommended; initiate at 40 mg once daily. Monitor renal function and blood pressure carefully due to increased sensitivity.
No specific dose adjustment recommended; initiate cautiously due to potential for decreased renal function.
none
Fetal toxicity: Drugs acting directly on the renin-angiotensin system (RAS) can cause fetal malformations, oligohydramnios, and neonatal renal failure. Discontinue as soon as pregnancy is detected.
Fetal toxicity: avoid use in pregnancy,Hypotension in volume-depleted patients,Renal impairment: monitor renal function,Hyperkalemia: monitor potassium levels
Hypotension in volume- or salt-depleted patients,Hyperkalemia, especially with renal impairment, diabetes, or concomitant potassium-sparing diuretics,Renal function impairment, including acute renal failure,Angioedema (rare),Use caution in severe aortic stenosis,Avoid concomitant use with aliskiren in diabetic patients
Pregnancy (second and third trimesters),Concomitant use with aliskiren in patients with diabetes or renal impairment (e GFR <60 m L/min)
Pregnancy (absolute),History of angioedema from any ARB or ACE inhibitor,Concomitant use with aliskiren in diabetic patients (absolute),Severe hepatic impairment (Child-Pugh class C) (relative)
No significant food interactions; can be taken with or without food. Avoid excessive potassium intake from high-potassium foods (e.g., bananas, oranges, spinach, potatoes) or potassium-containing salt substitutes. Limit alcohol intake as it may increase blood pressure or cause dizziness.
Avoid high-potassium foods (e.g., bananas, oranges, spinach, potatoes) and salt substitutes containing potassium chloride, as BYVALSON can increase potassium levels.
First trimester: Limited human data; animal studies show no teratogenicity. Second and third trimesters: Drugs acting directly on the renin-angiotensin system can cause fetal oligohydramnios, fetal renal dysfunction, skull ossification defects, and neonatal anuria, hypotension, and death.
Angiotensin II receptor antagonists (ARBs) are contraindicated in pregnancy due to fetal renal dysfunction, oligohydramnios, skull ossification defects, and neonatal anuria/hypotension. Risk is highest in the second and third trimesters; first-trimester exposure may also increase risk of congenital malformations.
No data on presence in human milk. Manufacturer recommends discontinuing breastfeeding or drug due to potential risk. M/P ratio unknown.
No data on Byvalson (valsartan/nebivolol) in breast milk. Valsartan is excreted in rat milk; unknown in humans. Nebivolol is likely excreted in human milk. Due to potential for adverse effects in nursing infants (hypotension, bradycardia), breastfeeding is not recommended. M/P ratio not established.
No dose adjustments during pregnancy; however, use is contraindicated in second and third trimesters due to fetal toxicity. If exposure occurs, discontinue as soon as possible.
Byvalson is contraindicated in pregnancy; no dose adjustment is recommended. Alternative antihypertensives with established safety profiles should be used. If exposure occurs, discontinue immediately and manage with appropriate therapy.
Azilsartan medoxomil has the highest affinity for AT1 receptors among ARBs; may cause a rapid decrease in blood pressure in volume-depleted patients; avoid use in pregnancy (Category D); monitor renal function and serum potassium; less CYP450 interaction potential than losartan or irbesartan; can be taken without regard to meals; dose adjustment not required in mild-to-moderate hepatic impairment.
BYVALSON (sacubitril/valsartan) is a first-in-class ARNI approved for heart failure with reduced ejection fraction (HFr EF). Monitor blood pressure and renal function closely upon initiation, especially in patients on high-dose ACE inhibitors or ARBs. Avoid use with ACE inhibitors within 36 hours due to risk of angioedema. May cause hypotension, hyperkalemia, and renal impairment. Titrate every 2-4 weeks to target dose of 97/103 mg BID as tolerated.
Take once daily at the same time each day with or without food.,Avoid becoming dehydrated; drink adequate fluids unless directed otherwise.,Do not use if pregnant or planning to become pregnant; notify your doctor immediately if pregnancy occurs.,Do not take with aliskiren if you have diabetes or renal impairment.,Report any signs of angioedema (swelling of face, lips, tongue, difficulty breathing) or severe dizziness.,May cause dizziness, especially during first few days; avoid driving until you know how the medication affects you.,Avoid potassium supplements and salt substitutes containing potassium unless approved by your doctor.,Do not stop taking the medication without talking to your doctor.
Do not take within 36 hours of any ACE inhibitor medication.,Take BYVALSON twice daily with or without food.,Monitor blood pressure regularly; report dizziness or fainting.,Avoid salt substitutes containing potassium.,Seek medical help immediately if you experience swelling of the face, lips, or throat.,Stay hydrated but do not use potassium supplements without consulting your doctor.
"The combination of azilsartan medoxomil, an angiotensin II receptor blocker (ARB), and fenbufen, a nonsteroidal anti-inflammatory drug (NSAID), can lead to a significant reduction in the antihypertensive and cardioprotective effects of azilsartan. NSAIDs inhibit cyclooxygenase enzymes, reducing prostaglandin synthesis, which diminishes the vasodilatory and natriuretic actions that support blood pressure control mediated by ARBs. This interaction may result in loss of blood pressure control, increased risk of renal impairment (especially in volume-depleted or elderly patients), and potential antagonism of the renal protective effects of ARBs in conditions like heart failure or chronic kidney disease."
"Oxprenolol, a non-selective beta-blocker, may attenuate the compensatory sympathetic response to Azilsartan medoxomil-induced hypotension, potentially leading to an excessive drop in blood pressure. This combination can also result in reduced cardiac output due to additive negative chronotropic effects, increasing the risk of bradycardia and heart block. Clinically, patients may experience severe hypotension, dizziness, syncope, or exacerbated heart failure symptoms."
"The combination of timolol, a non-selective beta-blocker, with azilsartan medoxomil, an angiotensin II receptor blocker (ARB), may lead to an increased risk of hypotension, bradycardia, and additive antihypertensive effects. Timolol can antagonize the compensatory sympathetic response to azilsartan-induced vasodilation, potentially resulting in excessive blood pressure reduction. Additionally, both drugs can affect renal perfusion, raising the risk of renal impairment in susceptible patients."
No interactions on record
Explore head-to-head clinical comparisons of other medications in the same therapeutic classes.
Common clinical questions about AZILSARTAN MEDOXOMIL vs BYVALSON, answered by our medical review team.
AZILSARTAN MEDOXOMIL is a Angiotensin II Receptor Blocker that works by Angiotensin II receptor blocker (ARB) that selectively inhibits angiotensin II binding to AT1 receptors, reducing vasoconstriction, aldosterone secretion, and sympathetic activity.. BYVALSON is a Angiotensin II Receptor Blocker that works by Valsartan is an angiotensin II receptor blocker (ARB) that selectively binds to the AT1 receptor, inhibiting angiotensin II-mediated vasoconstriction and aldosterone secretion. It also reduces blood pressure and causes vasodilation.. They differ in pharmacokinetic profiles, FDA-approved indications, and side effect profiles.
Potency comparisons between AZILSARTAN MEDOXOMIL and BYVALSON depend on the specific clinical indication. These are both Angiotensin II Receptor Blocker agents and are not directly interchangeable by dose. A physician or clinical pharmacist should guide any therapeutic switching decisions.
The standard adult dose of AZILSARTAN MEDOXOMIL is: 40 mg orally once daily. May increase to 80 mg once daily if needed.. The standard adult dose of BYVALSON is: 160 mg orally once daily.. Dosing should always be individualized based on indication, renal and hepatic function, age, and other patient factors.
No direct drug-drug interaction has been formally documented between AZILSARTAN MEDOXOMIL and BYVALSON in current clinical databases. However, individual patient risk factors including other medications, organ function, and comorbidities should always be evaluated by a qualified healthcare provider.
The maternal-fetal safety profiles differ. AZILSARTAN MEDOXOMIL is classified as Category C. First trimester: Limited human data; animal studies show no teratogenicity. Second and third trimesters: Drugs acting directly on the renin-angiotensin system can cause fetal oligo. BYVALSON is classified as Category C. Angiotensin II receptor antagonists (ARBs) are contraindicated in pregnancy due to fetal renal dysfunction, oligohydramnios, skull ossification defects, and neonatal anuria/hypoten. Always consult a maternal-fetal medicine specialist before taking either drug during pregnancy or lactation.