Version July 2025
Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus. When pregnancy is detected, discontinue therapy as soon as possible.
Dose is individualized; combination product may be substituted for individual components in patients currently maintained on both agents separately or in patients not adequately controlled with monotherapy (using one of the agents or an agent within the same antihypertensive class). May also be used as initial therapy in patients who are likely to need >1 antihypertensive to control BP.
Hypertension: Oral:
Initial therapy (antihypertensive naive): Telmisartan 40 mg/amlodipine 5 mg once daily; dose may be increased after 2 weeks of therapy. Patients requiring larger blood pressure reductions may be started on telmisartan 80 mg/amlodipine 5 mg once daily. Maximum dose: Telmisartan 80 mg/amlodipine 10 mg per day
Add-on therapy for patients not adequately controlled on antihypertensive monotherapy: Telmisartan 40 mg/amlodipine 5 mg, telmisartan 40 mg/amlodipine 10 mg, telmisartan 80 mg/amlodipine 5 mg, or telmisartan 80 mg/amlodipine 10 mg once daily; dose may be increased after 2 weeks of therapy. Maximum dose: Telmisartan 80 mg/amlodipine 10 mg per day
Replacement therapy: Substitute for the individually titrated components. Maximum dose: Telmisartan 80 mg/amlodipine 10 mg per day.
Dosage adjustment for concomitant therapy: Significant drug interactions exist, requiring dose/frequency adjustment or avoidance. Consult drug interactions database for more information.
Mild to moderate impairment: No dosage adjustment necessary.
Severe impairment: Titrate slowly.
Hemodialysis: Telmisartan and amlodipine: Nondialyzable
Hepatic impairment or biliary obstructive disorders: Not recommended for initial therapy. For add-on/replacement therapy initiate amlodipine 2.5 mg once daily (use of individual agents is necessary as appropriate combination dose is not available). Titrate slowly.
Ascites: Should be used with caution in patients with ascites due to cirrhosis (Ref).
Initial therapy (antihypertensive naive): Not recommended for initial therapy in patients ≥75 years of age.
Add-on/replacement therapy: Initiate amlodipine therapy at 2.5 mg once daily and titrate slowly. Note: Use of individual agents is necessary (appropriate combination dose is not available).
The following adverse drug reactions and incidences are derived from product labeling unless otherwise specified. Also see individual agents.
>10%: Cardiovascular: Peripheral edema (1% to 11%)
1% to 10%:
Cardiovascular: Edema (<2%), hypotension (<2%), syncope (<2%)
Nervous system: Dizziness (3%)
Neuromuscular & skeletal: Back pain (2%)
Hypersensitivity (eg, anaphylaxis or angioedema) to amlodipine, telmisartan, or any component of the formulation; concomitant use with aliskiren in patients with diabetes mellitus
Significant drug interactions exist, requiring dose/frequency adjustment or avoidance. Consult drug interactions database for more information.
Canadian labeling: Additional contraindications (not in US labeling): Hypersensitivity to dihydropyridine derivatives; known hypersensitivity (anaphylaxis) or angioedema to angiotensin II receptor blockers (ARBs); concomitant use with aliskiren in patients with moderate to severe renal impairment (GFR <60 mL/minute/1.73 m2); biliary obstructive disorders; severe hepatic impairment; shock (including cardiogenic shock); severe hypotension (<90 mm Hg systolic); obstruction of the outflow tract of the left ventricle (eg, high-grade aortic stenosis); hemodynamically unstable heart failure after acute myocardial infarction; pregnancy; breastfeeding; rare heredity condition of fructose intolerance; rare hereditary conditions incompatible with an excipient of the product.
Concerns related to adverse effects:
• Angioedema: Angioedema has been reported rarely with some angiotensin II receptor antagonists (ARBs) and may occur at any time during treatment (especially following first dose). It may involve the head and neck (potentially compromising airway) or the intestine (presenting with abdominal pain). Patients with idiopathic or hereditary angioedema or previous angioedema associated with ACE-inhibitor therapy may be at an increased risk. Prolonged frequent monitoring may be required, especially if tongue, glottis, or larynx are involved, as they are associated with airway obstruction. Patients with a history of airway surgery may have a higher risk of airway obstruction. Discontinue therapy immediately if angioedema occurs. Aggressive early management is critical. Intramuscular (IM) administration of epinephrine may be necessary. Do not readminister to patients who have had angioedema with ARBs.
• Angina/MI: Increased angina and/or MI have occurred with initiation or dosage titration of amlodipine. Reflex tachycardia may occur resulting in angina and/or MI in patients with obstructive coronary disease, especially in the absence of concurrent beta-blockade.
• Hyperkalemia: May occur with telmisartan use; risk factors include renal dysfunction, diabetes mellitus, concomitant use of potassium-sparing diuretics, potassium supplements and/or potassium containing salts. Use cautiously, if at all, with these agents and monitor potassium closely.
• Hypotension: Symptomatic hypotension may occur upon initiation in patients who are salt- or volume-depleted (eg, those treated with high-dose diuretics); correct volume depletion prior to administration. Use caution during initiation of therapy, particularly in patients with heart failure, volume or salt depletion, severe aortic stenosis, or in post-MI patients or those undergoing surgery or dialysis. This transient hypotensive response is not a contraindication to further treatment with telmisartan/amlodipine.
• Peripheral edema: The most common side effect of amlodipine is peripheral edema; occurs within 2 to 3 weeks of starting therapy.
• Renal function deterioration: Telmisartan may be associated with deterioration of renal function and/or increases in serum creatinine, particularly in patients with low renal blood flow (eg, renal artery stenosis, heart failure) whose glomerular filtration rate (GFR) is dependent on efferent arteriolar vasoconstriction by angiotensin II; deterioration may result in oliguria, acute renal failure, and progressive azotemia. Small increases in serum creatinine may occur following initiation; consider discontinuation only in patients with progressive and/or significant deterioration in renal function.
Disease-related concerns:
• Aortic/mitral stenosis: Use with caution in patients with severe aortic stenosis or significant aortic/mitral stenosis; may reduce coronary perfusion resulting in ischemia.
• Ascites: Generally, avoid use in patients with ascites due to cirrhosis or refractory ascites; if use cannot be avoided in patients with ascites due to cirrhosis, monitor BP and renal function carefully to avoid rapid development of renal failure (AASLD [Runyon 2013]).
• Heart failure (HF): Use caution when initiating in HF; may need to adjust dose, and/or concurrent diuretic therapy.
• Hepatic impairment: Use with caution in patients who have biliary obstructive disorders or hepatic impairment; amlodipine and telmisartan clearance is decreased so initiation at the lowest dose is recommended; the appropriate dose for hepatic impairment is not available in combination dosage form, therefore, initiation of treatment with this product is not recommended in patients with hepatic impairment.
• Hypertrophic cardiomyopathy (HCM) with outflow tract obstruction: Use amlodipine with caution in patients with HCM and outflow tract obstruction since reduction in afterload may worsen symptoms associated with this condition (ACCF/AHA [Gersh 2011]).
• Renal artery stenosis: Use telmisartan with caution in patients with unstented unilateral/bilateral renal artery stenosis. When unstented bilateral renal artery stenosis is present, use is generally avoided due to the elevated risk of deterioration in renal function unless possible benefits outweigh risks.
• Renal impairment: Use with caution in patients with renal impairment.
Special populations:
• Older adult: Not recommended for initial therapy in patients ≥75 years of age. The appropriate combination dose is not available.
• Pregnancy: [US Boxed Warning]: Drugs that act on the renin-angiotensin system can cause injury and death to the developing fetus. Discontinue as soon as possible once pregnancy is detected.
• Surgical patients: In patients on chronic angiotensin receptor blocker (ARB) therapy, intraoperative hypotension may occur with induction and maintenance of general anesthesia; however, discontinuation of therapy prior to surgery is controversial. If continued preoperatively, avoidance of hypotensive agents during surgery is prudent (Hillis, 2011).
Dosage forms specific issues:
• Sorbitol: Some products may contain sorbitol.
Excipient information presented when available (limited, particularly for generics); consult specific product labeling.
Tablet, oral:
Twynsta 40/5: Telmisartan 40 mg and amlodipine 5 mg [DSC]
Twynsta 40/10: Telmisartan 40 mg and amlodipine 10 mg [DSC]
Twynsta 80/5: Telmisartan 80 mg and amlodipine 5 mg [DSC]
Twynsta 80/10: Telmisartan 80 mg and amlodipine 10 mg [DSC]
Generic: Telmisartan 40 mg and amlodipine 5 mg; telmisartan 40 mg and amlodipine 10 mg; telmisartan 80 mg and amlodipine 5 mg; telmisartan 80 mg and amlodipine 10 mg
Yes
Tablets (Telmisartan-amLODIPine Oral)
40-5 mg (per each): $5.71
40-10 mg (per each): $5.71
80-5 mg (per each): $5.71
80-10 mg (per each): $5.71
Disclaimer: A representative AWP (Average Wholesale Price) price or price range is provided as reference price only. A range is provided when more than one manufacturer's AWP price is available and uses the low and high price reported by the manufacturers to determine the range. The pricing data should be used for benchmarking purposes only, and as such should not be used alone to set or adjudicate any prices for reimbursement or purchasing functions or considered to be an exact price for a single product and/or manufacturer. Medi-Span expressly disclaims all warranties of any kind or nature, whether express or implied, and assumes no liability with respect to accuracy of price or price range data published in its solutions. In no event shall Medi-Span be liable for special, indirect, incidental, or consequential damages arising from use of price or price range data. Pricing data is updated monthly.
Excipient information presented when available (limited, particularly for generics); consult specific product labeling.
Tablet, oral:
Twynsta 40/5: Telmisartan 40 mg and amlodipine 5 mg
Twynsta 40/10: Telmisartan 40 mg and amlodipine 10 mg
Twynsta 80/5: Telmisartan 80 mg and amlodipine 5 mg
Twynsta 80/10: Telmisartan 80 mg and amlodipine 10 mg
Generic: Telmisartan 40 mg and amlodipine 5 mg; telmisartan 40 mg and amlodipine 10 mg; telmisartan 80 mg and amlodipine 5 mg; telmisartan 80 mg and amlodipine 10 mg
Oral: Administer without regard to meals.
Hypertension: Management of hypertension (monotherapy or in combination with other antihypertensives).
Refer to individual components.
Note: Interacting drugs may not be individually listed below if they are part of a group interaction (eg, individual drugs within “CYP3A4 Inducers [Strong]” are NOT listed). For a complete list of drug interactions by individual drug name and detailed management recommendations, use the drug interactions program by clicking on the “Launch drug interactions program” link above.
Alfuzosin: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Aliskiren: May increase nephrotoxic effects of Angiotensin II Receptor Blockers. Aliskiren may increase hyperkalemic effects of Angiotensin II Receptor Blockers. Aliskiren may increase hypotensive effects of Angiotensin II Receptor Blockers. Management: Aliskiren use with ACEIs or ARBs in patients with diabetes is contraindicated. Combined use in other patients should be avoided, particularly when CrCl is less than 60 mL/min. If combined, monitor potassium, creatinine, and blood pressure closely. Risk D: Consider Therapy Modification
ALPRAZolam: CYP3A4 Inhibitors (Weak) may increase serum concentration of ALPRAZolam. Risk C: Monitor
Amifostine: Blood Pressure Lowering Agents may increase hypotensive effects of Amifostine. Management: When used at chemotherapy doses, hold blood pressure lowering medications for 24 hours before amifostine administration. If blood pressure lowering therapy cannot be held, do not administer amifostine. Use caution with radiotherapy doses of amifostine. Risk D: Consider Therapy Modification
Amphetamines: May decrease antihypertensive effects of Antihypertensive Agents. Risk C: Monitor
Angiotensin II: Angiotensin II Receptor Blockers may decrease therapeutic effects of Angiotensin II. Risk C: Monitor
Angiotensin-Converting Enzyme Inhibitors: Angiotensin II Receptor Blockers may increase adverse/toxic effects of Angiotensin-Converting Enzyme Inhibitors. Angiotensin II Receptor Blockers may increase serum concentration of Angiotensin-Converting Enzyme Inhibitors. Management: Use of telmisartan and ramipril is not recommended. It is not clear if any other combination of an ACE inhibitor and an ARB would be any safer. Consider alternatives when possible. Monitor blood pressure, renal function, and potassium if combined. Risk D: Consider Therapy Modification
Antipsychotic Agents (Second Generation [Atypical]): Blood Pressure Lowering Agents may increase hypotensive effects of Antipsychotic Agents (Second Generation [Atypical]). Risk C: Monitor
Arginine: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Atosiban: Calcium Channel Blockers may increase adverse/toxic effects of Atosiban. Specifically, there may be an increased risk for pulmonary edema and/or dyspnea. Risk C: Monitor
Barbiturates: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Benperidol: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Brigatinib: May decrease antihypertensive effects of Antihypertensive Agents. Brigatinib may increase bradycardic effects of Antihypertensive Agents. Risk C: Monitor
Brimonidine (Topical): May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Bromperidol: May decrease hypotensive effects of Blood Pressure Lowering Agents. Blood Pressure Lowering Agents may increase hypotensive effects of Bromperidol. Risk X: Avoid
Calcium Salts: May decrease therapeutic effects of Calcium Channel Blockers. Risk C: Monitor
CarBAMazepine: CYP3A4 Inhibitors (Weak) may increase serum concentration of CarBAMazepine. Risk C: Monitor
Cardiac Glycosides: Telmisartan may increase serum concentration of Cardiac Glycosides. Risk C: Monitor
Charcoal, Activated: May decrease serum concentration of AmLODIPine. Risk C: Monitor
Clofazimine: May increase serum concentration of CYP3A4 Substrates (High risk with Inhibitors). Risk C: Monitor
CycloSPORINE (Systemic): Calcium Channel Blockers (Dihydropyridine) may increase serum concentration of CycloSPORINE (Systemic). CycloSPORINE (Systemic) may increase serum concentration of Calcium Channel Blockers (Dihydropyridine). Risk C: Monitor
CYP3A4 Inducers (Moderate): May decrease serum concentration of AmLODIPine. Risk C: Monitor
CYP3A4 Inducers (Strong): May decrease serum concentration of AmLODIPine. Risk C: Monitor
CYP3A4 Inhibitors (Moderate): May increase serum concentration of AmLODIPine. Risk C: Monitor
CYP3A4 Inhibitors (Strong): May increase serum concentration of AmLODIPine. Risk C: Monitor
Dantrolene: May increase hyperkalemic effects of Calcium Channel Blockers. Dantrolene may increase negative inotropic effects of Calcium Channel Blockers. Risk X: Avoid
Dapoxetine: May increase orthostatic hypotensive effects of Angiotensin II Receptor Blockers. Risk C: Monitor
Dapoxetine: May increase orthostatic hypotensive effects of Calcium Channel Blockers. Risk C: Monitor
Dexmethylphenidate: May decrease therapeutic effects of Antihypertensive Agents. Risk C: Monitor
Diazoxide: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Dipeptidyl Peptidase-IV Inhibitors: May increase adverse/toxic effects of Angiotensin II Receptor Blockers. Specifically, the risk for angioedema may be increased with this combination. Risk C: Monitor
Drospirenone-Containing Products: May increase hyperkalemic effects of Angiotensin II Receptor Blockers. Risk C: Monitor
DULoxetine: Blood Pressure Lowering Agents may increase hypotensive effects of DULoxetine. Risk C: Monitor
Finerenone: Angiotensin II Receptor Blockers may increase hyperkalemic effects of Finerenone. Risk C: Monitor
Finerenone: CYP3A4 Inhibitors (Weak) may increase serum concentration of Finerenone. Risk C: Monitor
Flibanserin: CYP3A4 Inhibitors (Weak) may increase serum concentration of Flibanserin. Risk C: Monitor
Flunarizine: May increase therapeutic effects of Antihypertensive Agents. Risk C: Monitor
Fusidic Acid (Systemic): May increase serum concentration of CYP3A4 Substrates (High risk with Inhibitors). Management: Consider avoiding this combination if possible. If required, monitor patients closely for increased adverse effects of the CYP3A4 substrate. Risk D: Consider Therapy Modification
Heparin: May increase hyperkalemic effects of Angiotensin II Receptor Blockers. Risk C: Monitor
Heparins (Low Molecular Weight): May increase hyperkalemic effects of Angiotensin II Receptor Blockers. Risk C: Monitor
Herbal Products with Blood Pressure Increasing Effects: May decrease antihypertensive effects of Antihypertensive Agents. Risk C: Monitor
Herbal Products with Blood Pressure Lowering Effects: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Hypotension-Associated Agents: Blood Pressure Lowering Agents may increase hypotensive effects of Hypotension-Associated Agents. Risk C: Monitor
Iloperidone: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Indoramin: May increase hypotensive effects of Antihypertensive Agents. Risk C: Monitor
Inhalational Anesthetics: May increase hypotensive effects of Calcium Channel Blockers. Risk C: Monitor
Isocarboxazid: May increase antihypertensive effects of Antihypertensive Agents. Risk X: Avoid
Ixabepilone: CYP3A4 Inhibitors (Weak) may increase serum concentration of Ixabepilone. Risk C: Monitor
Lemborexant: CYP3A4 Inhibitors (Weak) may increase serum concentration of Lemborexant. Management: The maximum recommended dosage of lemborexant is 5 mg, no more than once per night, when coadministered with weak CYP3A4 inhibitors. Risk D: Consider Therapy Modification
Levodopa-Foslevodopa: Blood Pressure Lowering Agents may increase hypotensive effects of Levodopa-Foslevodopa. Risk C: Monitor
Lithium: Angiotensin II Receptor Blockers may increase serum concentration of Lithium. Management: Initiate lithium at lower doses in patients receiving an angiotensin II receptor blocker (ARB). Consider lithium dose reductions in patients stable on lithium therapy who are initiating an ARB. Monitor lithium concentrations closely when combined. Risk D: Consider Therapy Modification
Lomitapide: CYP3A4 Inhibitors (Weak) may increase serum concentration of Lomitapide. Management: Patients on lomitapide 5 mg/day may continue that dose. Patients taking lomitapide 10 mg/day or more should decrease the lomitapide dose by half. The lomitapide dose may then be titrated up to a max adult dose of 30 mg/day. Risk D: Consider Therapy Modification
Loop Diuretics: May increase hypotensive effects of Angiotensin II Receptor Blockers. Loop Diuretics may increase nephrotoxic effects of Angiotensin II Receptor Blockers. Risk C: Monitor
Loop Diuretics: May increase hypotensive effects of Antihypertensive Agents. Risk C: Monitor
Lormetazepam: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Lovastatin: AmLODIPine may increase serum concentration of Lovastatin. Risk C: Monitor
Magnesium Sulfate: May increase adverse/toxic effects of Calcium Channel Blockers (Dihydropyridine). Specifically, the risk of hypotension or muscle weakness may be increased. Risk C: Monitor
Melatonin: May decrease antihypertensive effects of Calcium Channel Blockers (Dihydropyridine). Risk C: Monitor
Metergoline: May decrease antihypertensive effects of Blood Pressure Lowering Agents. Blood Pressure Lowering Agents may increase orthostatic hypotensive effects of Metergoline. Risk C: Monitor
Methylphenidate: May decrease antihypertensive effects of Antihypertensive Agents. Risk C: Monitor
Midazolam: CYP3A4 Inhibitors (Weak) may increase serum concentration of Midazolam. Risk C: Monitor
Molsidomine: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Mycophenolate: Telmisartan may decrease serum concentration of Mycophenolate. Risk C: Monitor
Naftopidil: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Neuromuscular-Blocking Agents (Nondepolarizing): Calcium Channel Blockers may increase neuromuscular-blocking effects of Neuromuscular-Blocking Agents (Nondepolarizing). Risk C: Monitor
Nicergoline: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Nicorandil: May increase hyperkalemic effects of Angiotensin II Receptor Blockers. Risk C: Monitor
Nicorandil: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
NiMODipine: CYP3A4 Inhibitors (Weak) may increase serum concentration of NiMODipine. Risk C: Monitor
Nitroprusside: Blood Pressure Lowering Agents may increase hypotensive effects of Nitroprusside. Risk C: Monitor
Nonsteroidal Anti-Inflammatory Agents (Topical): May decrease therapeutic effects of Angiotensin II Receptor Blockers. Risk C: Monitor
Nonsteroidal Anti-Inflammatory Agents: May decrease therapeutic effects of Angiotensin II Receptor Blockers. The combination of these two agents may also significantly decrease glomerular filtration and renal function. Angiotensin II Receptor Blockers may increase adverse/toxic effects of Nonsteroidal Anti-Inflammatory Agents. Specifically, the combination may result in a significant decrease in renal function. Risk C: Monitor
Obinutuzumab: May increase hypotensive effects of Blood Pressure Lowering Agents. Management: Consider temporarily withholding blood pressure lowering medications beginning 12 hours prior to obinutuzumab infusion and continuing until 1 hour after the end of the infusion. Risk D: Consider Therapy Modification
Patiromer: May decrease serum concentration of Telmisartan. Management: Administer telmisartan at least 3 hours before or 3 hours after patiromer. Risk D: Consider Therapy Modification
Pentoxifylline: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Perazine: May increase hypotensive effects of Antihypertensive Agents. Risk C: Monitor
Pholcodine: Blood Pressure Lowering Agents may increase hypotensive effects of Pholcodine. Risk C: Monitor
Phosphodiesterase 5 Inhibitors: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Pimozide: CYP3A4 Inhibitors (Weak) may increase serum concentration of Pimozide. Risk X: Avoid
Polyethylene Glycol-Electrolyte Solution: Angiotensin II Receptor Blockers may increase nephrotoxic effects of Polyethylene Glycol-Electrolyte Solution. Risk C: Monitor
Potassium Salts: May increase hyperkalemic effects of Angiotensin II Receptor Blockers. Risk C: Monitor
Potassium-Sparing Diuretics: May increase hyperkalemic effects of Angiotensin II Receptor Blockers. Risk C: Monitor
Prazosin: Antihypertensive Agents may increase hypotensive effects of Prazosin. Risk C: Monitor
Prostacyclin Analogues: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Quinagolide: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Ranolazine: May increase adverse/toxic effects of Angiotensin II Receptor Blockers. Risk C: Monitor
Red Yeast Rice: AmLODIPine may increase serum concentration of Red Yeast Rice. Risk C: Monitor
Sacubitril: Angiotensin II Receptor Blockers may increase adverse/toxic effects of Sacubitril. Risk X: Avoid
Silodosin: May increase hypotensive effects of Blood Pressure Lowering Agents. Risk C: Monitor
Simvastatin: AmLODIPine may increase serum concentration of Simvastatin. Management: Dose of simvastatin should not exceed 20 mg daily if coadministering with amlodipine. If coadministering with simvastatin and amlodipine, close laboratory and clinical monitoring for signs and symptoms of rhabdomyolysis is warranted. Risk D: Consider Therapy Modification
Sincalide: Drugs that Affect Gallbladder Function may decrease therapeutic effects of Sincalide. Management: Consider discontinuing drugs that may affect gallbladder motility prior to the use of sincalide to stimulate gallbladder contraction. Risk D: Consider Therapy Modification
Sirolimus (Conventional): CYP3A4 Inhibitors (Weak) may increase serum concentration of Sirolimus (Conventional). Risk C: Monitor
Sirolimus (Protein Bound): CYP3A4 Inhibitors (Weak) may increase serum concentration of Sirolimus (Protein Bound). Management: Reduce the dose of protein bound sirolimus to 56 mg/m2 when used concomitantly with a weak CYP3A4 inhibitor. Risk D: Consider Therapy Modification
Sodium Phosphates: Angiotensin II Receptor Blockers may increase nephrotoxic effects of Sodium Phosphates. Specifically, the risk of acute phosphate nephropathy may be enhanced. Risk C: Monitor
Sparsentan: May increase adverse/toxic effects of Angiotensin II Receptor Blockers. Risk X: Avoid
Tacrolimus (Systemic): Angiotensin II Receptor Blockers may increase hyperkalemic effects of Tacrolimus (Systemic). Risk C: Monitor
Tacrolimus (Systemic): Calcium Channel Blockers (Dihydropyridine) may increase serum concentration of Tacrolimus (Systemic). Risk C: Monitor
Tacrolimus (Systemic): CYP3A4 Inhibitors (Weak) may increase serum concentration of Tacrolimus (Systemic). Risk C: Monitor
Terazosin: Antihypertensive Agents may increase hypotensive effects of Terazosin. Risk C: Monitor
Tolvaptan: May increase hyperkalemic effects of Angiotensin II Receptor Blockers. Risk C: Monitor
Triazolam: CYP3A4 Inhibitors (Weak) may increase serum concentration of Triazolam. Risk C: Monitor
Trimethoprim: May increase hyperkalemic effects of Angiotensin II Receptor Blockers. Risk C: Monitor
Ubrogepant: CYP3A4 Inhibitors (Weak) may increase serum concentration of Ubrogepant. Management: In patients taking weak CYP3A4 inhibitors, the initial and second dose (given at least 2 hours later if needed) of ubrogepant should be limited to 50 mg. Risk D: Consider Therapy Modification
Urapidil: Antihypertensive Agents may increase hypotensive effects of Urapidil. Risk C: Monitor
Rate and extent of telmisartan absorption (in combination with amlodipine) is decreased by 60% and 24%, respectively, when administered with a high-fat meal. Management: May administer without regard to meals.
[US Boxed Warning]: Drugs that act on the renin-angiotensin system can cause injury and death to the developing fetus. Discontinue as soon as possible once pregnancy is detected. Also see individual agents.
Amlodipine is present in breast milk (Naito 2015); excretion of telmisartan is unknown. Due to the potential for serious adverse reactions in the breastfed infant, breastfeeding is not recommended by the manufacturer. See individual agents.
Avoid salt substitutes which may contain potassium.
Baseline and periodic electrolyte panels (especially serum potassium); renal function (serum creatinine, BUN, urinalysis); hepatic function; heart rate, blood pressure, symptomatic hypotension, peripheral edema
Telmisartan is a nonpeptide AT1 (angiotensin II type 1) receptor antagonist. Angiotensin II acts as a vasoconstrictor. In addition to causing direct vasoconstriction, angiotensin II also stimulates the release of aldosterone. Once aldosterone is released, sodium and water are reabsorbed. The end result is an elevation in blood pressure. Telmisartan binding to AT1 prevents angiotensin II from binding to the receptor thereby blocking the vasoconstriction and the aldosterone secreting effects of angiotensin II.
Amlodipine inhibits calcium ion from entering the “slow channels” or select voltage-sensitive areas of vascular smooth muscle and myocardium during depolarization, producing a relaxation of coronary vascular smooth muscle and coronary vasodilation; increases myocardial oxygen delivery in patients with vasospastic angina. Amlodipine directly acts on vascular smooth muscle to produce peripheral arterial vasodilation reducing peripheral vascular resistance and blood pressure.
See individual agents.
