Head-to-head clinical analysis & difference comparison: details on mechanism of action, dosing, half-life, interactions, and maternal-fetal safety.
BYVALSON vs EDARBYCLOR
Clinician-reviewed, head-to-head comparison of mechanism, dosing, pharmacokinetics, and safety profiles.
Last clinically reviewed: July 2026 · OpiCalc Medical Review Team
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.
EDARBYCLOR is a fixed-dose combination of azilsartan medoxomil, an angiotensin II receptor blocker (ARB), and chlorthalidone, a thiazide-like diuretic. Azilsartan selectively blocks AT1 receptors, reducing angiotensin II-mediated vasoconstriction, aldosterone secretion, and renal sodium reabsorption. Chlorthalidone inhibits sodium-chloride cotransport in the distal convoluted tubule, increasing excretion of sodium, chloride, and water, thereby reducing plasma volume.
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.
Treatment of hypertension to lower blood pressure; lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions
160 mg orally once daily.
One tablet (azilsartan medoxomil 40 mg / chlorthalidone 12.5 mg or 40 mg / 25 mg) orally once daily.
Terminal half-life 10-12 hours; allows once-daily dosing; extended in severe renal impairment (up to 20 hours)
Terminal elimination half-life is approximately 11-12 hours for azilsartan medoxomil; clinical consequence: supports once-daily dosing for 24-hour blood pressure control
Valsartan is primarily metabolized by CYP2C9 and minimally by CYP3A4. It undergoes glucuronidation via UGT1A3, UGT1A9, and UGT2B7. The major metabolite is inactive.
Azilsartan medoxomil is hydrolyzed to the active metabolite azilsartan; azilsartan is metabolized primarily by CYP2C9. Chlorthalidone is minimally metabolized, with most of the dose excreted unchanged in urine.
Renal: 60% unchanged; Biliary/Fecal: 40% as metabolites; total clearance ~30 L/h
Renal (approximately 60% as unchanged drug and metabolites), biliary/fecal (approximately 40%)
95% bound primarily to albumin
Azilsartan: >99% bound to serum albumin; chlorthalidone: approximately 75% bound to albumin and lipoproteins
Vd 8-10 L/kg; suggests extensive extravascular distribution
Azilsartan: approximately 16 L (0.2 L/kg) indicating limited extravascular distribution; chlorthalidone: approximately 3-4 L/kg (extensive tissue binding, particularly to erythrocytes)
Oral: 50% (range 40-60%); food reduces peak concentration but not AUC
Azilsartan medoxomil: absolute bioavailability approximately 60% (oral); chlorthalidone: approximately 65% (oral)
No dosage adjustment required for GFR ≥30 m L/min; not recommended for GFR <30 m L/min.
e GFR <30 m L/min/1.73m2: not recommended. No adjustment required for e GFR ≥30 m L/min/1.73m2.
Contraindicated in severe hepatic impairment (Child-Pugh class C); no adjustment for mild to moderate impairment (Child-Pugh A or B).
Child-Pugh Class A (mild): no adjustment. Child-Pugh Class B (moderate): contraindicated. Child-Pugh Class C (severe): contraindicated.
Safety and efficacy not established in pediatric patients.
Not established; safety and efficacy in pediatric patients have not been studied.
No specific dose adjustment recommended; initiate cautiously due to potential for decreased renal function.
Initiate with the lowest available dose (40 mg/12.5 mg) and titrate cautiously due to increased risk of hypotension and electrolyte disturbances.
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.
None
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
Fetal toxicity: Drugs acting directly on the renin-angiotensin system can cause oligohydramnios, fetal renal dysfunction, and neonatal hypotension, hyperkalemia, and skull hypoplasia. Discontinue Edarbyclor as soon as possible when pregnancy is detected.,Hypotension: Correct volume- or salt-depleted patients prior to initiation; monitor for symptomatic hypotension.,Electrolyte disturbances: Chlorthalidone may cause hypokalemia, hyponatremia, and hypomagnesemia. Monitor electrolytes periodically.,Renal function deterioration: Monitor renal function in patients with renal artery stenosis, severe heart failure, or volume depletion.,Hyperkalemia: Risk increased with renal impairment, diabetes, or concomitant use of potassium-sparing diuretics, potassium supplements, or other drugs that increase potassium.,Acute angle-closure glaucoma: Chlorthalidone, as a sulfonamide derivative, can cause idiosyncratic reaction leading to acute transient myopia and acute angle-closure glaucoma.,Exacerbation of systemic lupus erythematosus: Chlorthalidone may exacerbate or activate SLE.,Metabolic: Chlorthalidone may increase serum glucose, uric acid (precipitating gout), and decrease urinary calcium excretion.,Sulfonamide allergy: Chlorthalidone is a sulfonamide derivative; caution in patients with sulfonamide allergy.
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)
Anuria,Hypersensitivity to azilsartan medoxomil, chlorthalidone, or any component of the formulation,Concomitant use with aliskiren in patients with diabetes mellitus
Avoid high-potassium foods (e.g., bananas, oranges, spinach, potatoes) and salt substitutes containing potassium chloride, as BYVALSON can increase potassium levels.
Avoid high-potassium foods (e.g., bananas, oranges, potatoes, tomatoes, salt substitutes) in excess due to risk of hyperkalemia. Avoid excessive salt intake. Grapefruit juice may alter drug metabolism; limit or avoid consumption. Alcohol may potentiate hypotensive effects.
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.
First trimester: Drugs acting directly on the renin-angiotensin system (RAS) can cause fetal renal dysplasia, oligohydramnios, and skull ossification defects when used in the second and third trimesters. There is no known risk of major malformations with first trimester exposure, but data are limited. Second and third trimesters: Use is contraindicated due to fetal renal dysfunction, oligohydramnios, pulmonary hypoplasia, limb contractures, and neonatal anuria, hypotension, and death. Azilsartan medoxomil (ARB) and chlorthalidone (thiazide diuretic) both affect RAS and fetal hemodynamics.
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 data on azilsartan medoxomil or chlorthalidone presence in human milk, effects on the breastfed infant, or milk production. Chlorthalidone is present in breast milk at low levels; M/P ratio unknown. Due to potential for adverse effects in the nursing infant (e.g., hypotension, renal impairment), alternative agents are recommended.
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.
EDARBYCLOR is not recommended in pregnancy, especially during second and third trimesters; if exposure occurs, discontinue as soon as possible. No specific dose adjustment studied; however, pregnancy can increase volume of distribution and clearance of some antihypertensives, but no data for this combination. Use is contraindicated after first trimester.
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.
EDARBYCLOR is a fixed-dose combination of azilsartan medoxomil (an ARB) and chlorthalidone (a thiazide-like diuretic). Monitor renal function and electrolytes regularly due to risk of hypotension, hyperkalemia, and hyponatremia. Avoid use in patients with anuria or severe renal impairment (e GFR <30 m L/min). Chlorthalidone may exacerbate gout and hyperuricemia. Use caution in patients with hepatic impairment or diabetes.
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.
Take this medication exactly as prescribed, usually once daily.,Avoid salt substitutes containing potassium unless approved by your doctor.,Drink plenty of fluids unless otherwise directed by your healthcare provider.,Report symptoms of low blood pressure (dizziness, fainting), electrolyte imbalance (muscle cramps, weakness), or kidney problems (decreased urination).,This drug may cause dizziness; avoid driving or operating machinery until you know how it affects you.,Tell your doctor if you are pregnant or planning to become pregnant; this drug can cause fetal harm.,Limit alcohol intake as it may worsen side effects.,Do not stop taking this medication abruptly without consulting your doctor.
No interactions on record
No interactions on record
Explore head-to-head clinical comparisons of other medications in the same therapeutic classes.
Common clinical questions about BYVALSON vs EDARBYCLOR, answered by our medical review team.
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.. EDARBYCLOR is a Angiotensin II Receptor Blocker/Thiazide Diuretic Combination that works by EDARBYCLOR is a fixed-dose combination of azilsartan medoxomil, an angiotensin II receptor blocker (ARB), and chlorthalidone, a thiazide-like diuretic. Azilsartan selectively blocks AT1 receptors, reducing angiotensin II-mediated vasoconstriction, aldosterone secretion, and renal sodium reabsorption. Chlorthalidone inhibits sodium-chloride cotransport in the distal convoluted tubule, increasing excretion of sodium, chloride, and water, thereby reducing plasma volume.. They differ in pharmacokinetic profiles, FDA-approved indications, and side effect profiles.
Potency comparisons between BYVALSON and EDARBYCLOR depend on the specific clinical indication. These are agents from distinct pharmacological classes and are not directly interchangeable by dose. A physician or clinical pharmacist should guide any therapeutic switching decisions.
The standard adult dose of BYVALSON is: 160 mg orally once daily.. The standard adult dose of EDARBYCLOR is: One tablet (azilsartan medoxomil 40 mg / chlorthalidone 12.5 mg or 40 mg / 25 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 BYVALSON and EDARBYCLOR 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. 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. EDARBYCLOR is classified as Category C. First trimester: Drugs acting directly on the renin-angiotensin system (RAS) can cause fetal renal dysplasia, oligohydramnios, and skull ossification defects when used in the secon. Always consult a maternal-fetal medicine specialist before taking either drug during pregnancy or lactation.