Tekturna HCT

Last updated on RxList: 12/22/2020
Tekturna HCT Side Effects Center

What Is Tekturna HCT?

Tekturna HCT (aliskiren and hydrochlorothiazide) is a combination of an anti-hypertensive (blood pressure lowering) medication and a thiazide diuretic (water pill) used to treat high blood pressure (hypertension).

What Are Side Effects of Tekturna HCT?

Common side effects of Tekturna HCT include:

  • dizziness,
  • lightheadedness,
  • spinning sensation,
  • diarrhea,
  • blurred vision, or
  • cough as your body adjusts to the medication

Other side effects of Tekturna HCT include stomach pain, indigestion, tired feeling, or flu symptoms.

Dosage for Tekturna HCT

The recommended once-daily doses of Tekturna HCT in order of increasing mean effect are 150/12.5 mg, 150/25 mg or 300/12.5 mg, and 300/25 mg.

What Drugs, Substances, or Supplements Interact with Tekturna HCT?

Tekturna HCT may interact with lithium, irbesartan, ketoconazole, steroids, other blood pressure medications or diuretics (water pills), insulin or oral diabetes medicines, cholesterol medications, aspirin or other NSAIDs (nonsteroidal anti-inflammatory drugs), muscle relaxers, barbiturates, or narcotics. Tell your doctor all medications and supplements you use.

Tekturna HCT During Pregnancy and Breastfeeding

Tekturna HCT is not recommended for use during pregnancy. It may harm a fetus. This medication passes into breast milk. Consult your doctor before breastfeeding.

Additional Information

Our Tekturna HCT (aliskiren and hydrochlorothiazide) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


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Tekturna HCT Consumer Information

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Get emergency medical help if you have signs of an allergic reaction (hives, vomiting, severe stomach pain, dizziness, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).

Call your doctor at once if you have:

  • a light-headed feeling, like you might pass out;
  • little or no urination;
  • eye pain, vision problems;
  • high potassium level--nausea, weakness, tingly feeling, chest pain, irregular heartbeats, loss of movement;
  • low potassium level--leg cramps, constipation, irregular heartbeats, fluttering in your chest, increased thirst or urination, numbness or tingling, muscle weakness or limp feeling;
  • low sodium level --headache, confusion, slurred speech, severe weakness, vomiting, loss of coordination, feeling unsteady; or
  • lupus-like symptoms--muscle or joint pain, fever, and a rash or patchy skin color that worsens in sunlight.

Common side effects may include:

  • dizziness, tired feeling;
  • high potassium;
  • cough;
  • joint pain;
  • diarrhea; or
  • flu symptoms (fever, chills, body aches).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Tekturna HCT (Aliskren and Hydrochlorothiazide Tablets)


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Tekturna HCT Professional Information


Clinical Studies Experience

The following serious adverse reactions are discussed in greater detail in other sections of the label:

  • Fetal Toxicity [see WARNINGS AND PRECAUTIONS].
  • Anaphylactic Reactions and Head and Neck Angioedema [see WARNINGS AND PRECAUTIONS].
  • Hypotension [see WARNINGS AND PRECAUTIONS].

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in clinical trials of another drug and may not reflect the rates observed in practice.

Tekturna HCT

Tekturna HCT has been evaluated for safety in more than 2,700 patients, including over 700 treated for 6 months and 190 for over 1 year. In placebocontrolled clinical trials, discontinuation of therapy due to a clinical adverse event (including uncontrolled hypertension) occurred in 2.7% of patients treated with Tekturna HCT versus 3.6% of patients given placebo.

Adverse events in placebo-controlled trials that occurred in at least 1% of patients treated with Tekturna HCT and at a higher incidence than placebo included dizziness (2.3% versus 1%), influenza (2.3% versus 1.6%), diarrhea (1.6% versus 0.5%), cough (1.3% versus 0.5%), vertigo (1.2% versus 0.5%), asthenia (1.2% versus 0%), and arthralgia (1% versus 0.5%).


Aliskiren has been evaluated for safety in 6,460 patients, including 1,740 treated for longer than 6 months, and 1,250 for longer than 1 year. In placebocontrolled clinical trials, discontinuation of therapy due to a clinical adverse event, including uncontrolled hypertension occurred in 2.2% of patients treated with aliskiren, versus 3.5% of patients given placebo. These data do not include information from the ALTITUDE study which evaluated the use of aliskiren in combination with ARBs or ACEIs [see CONTRAINDICATIONS, WARNINGS AND PRECAUTIONS, and Clinical Studies].

Two cases of angioedema with respiratory symptoms were reported with aliskiren use in the clinical studies. Two other cases of periorbital edema without respiratory symptoms were reported as possible angioedema and resulted in discontinuation. The rate of these angioedema cases in the completed studies was 0.06%.

In addition, 26 other cases of edema involving the face, hands, or whole body were reported with aliskiren use, including 4 leading to discontinuation.

In the placebo-controlled studies, however, the incidence of edema involving the face, hands, or whole body was 0.4% with aliskiren compared with 0.5% with placebo. In a long-term active-controlled study with aliskiren and HCTZ arms, the incidence of edema involving the face, hands, or whole body was 0.4% in both treatment arms.

Aliskiren produces dose-related gastrointestinal (GI) adverse reactions. Diarrhea was reported by 2.3% of patients at 300 mg, compared to 1.2% in placebo patients. In women and the elderly (age 65 years and older) increases in diarrhea rates were evident starting at a dose of 150 mg daily, with rates for these subgroups at 150 mg comparable to those seen at 300 mg for men or younger patients (all rates about 2% to 2.3%). Other GI symptoms included abdominal pain, dyspepsia, and gastroesophageal reflux, although increased rates for abdominal pain and dyspepsia were distinguished from placebo only at 600 mg daily. Diarrhea and other GI symptoms were typically mild and rarely led to discontinuation.

Aliskiren was associated with a slight increase in cough in the placebo-controlled studies (1.1% for any aliskiren use versus 0.6% for placebo). In activecontrolled trials with ACE inhibitor (ramipril, lisinopril) arms, the rates of cough for the aliskiren arms were about one-third to one-half the rates in the ACE inhibitor arms.

Other adverse reactions with increased rates for aliskiren compared to placebo included rash (1% versus 0.3%) and renal stones (0.2% versus 0%). Single episodes of tonic-clonic seizures with loss of consciousness were reported in 2 patients treated with aliskiren in the clinical trials. One patient had predisposing causes for seizures and had a negative electroencephalogram (EEG) and cerebral imaging following the seizures; for the other patient, EEG and imaging results were not reported. Aliskiren was discontinued and there was no rechallenge in either case.

No clinically meaningful changes in vital signs or in ECG (including QTc interval) were observed in patients treated with aliskiren.

Hydrochlorothiazide (HCTZ)

Other adverse reactions that have been reported with HCTZ, without regard to causality, are listed below:

Body As A Whole: weakness

Digestive: pancreatitis, jaundice (intrahepatic cholestatic jaundice), sialadenitis, cramping, gastric irritation

Hematologic: aplastic anemia, agranulocytosis, leukopenia, hemolytic anemia, thrombocytopenia;

Hypersensitivity: purpura, photosensitivity, urticaria, necrotizing angiitis (vasculitis and cutaneous vasculitis), fever, respiratory distress including pneumonitis and pulmonary edema, anaphylactic reactions

Metabolic: hyperglycemia, glycosuria, hyperuricemia

Musculoskeletal: muscle spasm

Nervous System/Psychiatric: restlessness

Renal: renal failure, renal dysfunction, interstitial nephritis

Skin: erythema multiforme including Stevens-Johnson syndrome, exfoliative dermatitis including toxic epidermal necrolysis

Special Senses: transient blurred vision, xanthopsia

Clinical Laboratory Test Abnormalities

In controlled clinical trials, clinically important changes in standard laboratory parameters were rarely associated with administration of Tekturna HCT in patients with hypertension not concomitantly treated with an ARB or ACEI.

Blood Urea Nitrogen (BUN)/Creatinine: In patients with hypertension not concomitantly treated with an ARB or ACEI, elevations (greater than 50% increase) in BUN and creatinine occurred in 11.8% and 0.9%, respectively, of patients taking Tekturna HCT, and 7% and 1.1%, respectively, of patients given placebo in short-term controlled clinical trials. No patients were discontinued due to an increase in either BUN or creatinine.

Hemoglobin and Hematocrit: A greater than 20% decrease in hemoglobin and hematocrit were observed in <0.1% and 0.1%, respectively, of patients treated with Tekturna HCT, compared with 0% in placebo-treated patients. No patients were discontinued due to anemia.

Liver Function Tests: Occasional elevations (greater than 150%) in ALT (SGPT) were observed in 1.2% of patients treated with Tekturna HCT, compared with 0% in placebo-treated patients. No patients were discontinued due to abnormal liver function tests.

Post-Marketing Experience

The following adverse reactions have been reported in aliskiren or hydrochlorothiazide post-marketing experience. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to estimate their frequency or establish a causal relationship to drug exposure.


Hypersensitivity: anaphylactic reactions and angioedema requiring airway management and hospitalization, urticaria, peripheral edema, hepatic enzyme increase with clinical symptoms of hepatic dysfunction, severe cutaneous adverse reactions, including Stevens-Johnson syndrome and toxic epidermal necrolysis, pruritus, erythema, hyponatremia, nausea, vomiting.


Acute renal failure, renal disorder, aplastic anemia, erythema mutliforme, pyrexia, muscle spasm, asthenia, acute angle-closure glaucoma, bone marrow failure, worsening of diabetes control, hypokalemia, blood lipids increased, hyponatremia, hypomagnesemia, hypercalcemia, hyperchloremic alkalosis, impotence, visual impairment.

Pathological changes in the parathyroid gland of patients with hypercalcemia and hypophosphatemia have been observed in a few patients on prolonged thiazide therapy. If hypercalcemia occurs, further diagnostic evaluation is necessary.

Non-melanoma Skin Cancer

Hydrochlorothiazide is associated with an increased risk of non-melanoma skin cancer. In a study conducted in the Sentinel System, increased risk was predominantly for squamous cell carcinoma (SCC) and in white patients taking large cumulative doses. The increased risk for SCC in the overall population was approximately 1 additional case per 16,000 patients per year, and for white patients taking a cumulative dose of ≥50,000mg the risk increase was approximately 1 additional SCC case for every 6,700 patients per year.

Read the entire FDA prescribing information for Tekturna HCT (Aliskren and Hydrochlorothiazide Tablets)

© Tekturna HCT Patient Information is supplied by Cerner Multum, Inc. and Tekturna HCT Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.

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