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7 Interactions found for:

Farxiga and losartan
Interactions Summary
  • 4 Major
  • 3 Moderate
  • 0 Minor
  • Farxiga
  • losartan

Drug Interactions

Moderate
Losartan + Farxiga

The following applies to the ingredients: Losartan and Dapagliflozin (found in Farxiga)

MONITOR: Sodium-glucose co-transporter 2 (SGLT-2) inhibitors may potentiate the hypotensive effects of diuretics, antihypertensive agents, vasodilators, or agents with hypotensive properties. Inhibition of glucose and sodium co-transport produces mild diuresis and transient natriuresis, resulting in intravascular volume contraction. Volume depletion-related adverse reactions including hypotension, postural dizziness, orthostatic hypotension, syncope, and dehydration can occur after initiating treatment with SGLT-2 inhibitors, and the risk may be increased with concomitant use of other agents that can lower blood pressure.

MANAGEMENT: Caution is advised if SGLT-2 inhibitors are coadministered with diuretics and/or agents with hypotensive properties, particularly in the elderly and patients with impaired renal function. Prior to initiating SGLT-2 inhibitors, volume status should be assessed and corrected, if necessary. Clinical and laboratory monitoring are recommended during therapy, including electrolytes, fluid status, renal function, and blood pressure. If volume depletion occurs, treatment with SGLT-2 inhibitors should be interrupted until the condition is corrected.

References

  1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  2. Cerner Multum, Inc. "Australian Product Information." O 0
  3. "Product Information. Invokana (canagliflozin)." Janssen Pharmaceuticals (2013):
  4. "Product Information. Farxiga (dapagliflozin)." Bristol-Myers Squibb (2014):
  5. "Product Information. Jardiance (empagliflozin)." Boehringer Ingelheim (2014):
  6. "Product Information. Brenzavvy (bexagliflozin)." TheracosBio, LLC (2023):

Drug and Food Interactions

Moderate
Losartan + Food

The following applies to the ingredients: Losartan

GENERALLY AVOID: Moderate-to-high dietary intake of potassium, especially salt substitutes, may increase the risk of hyperkalemia in some patients who are using angiotensin II receptor blockers (ARBs). ARBs can promote hyperkalemia through inhibition of angiotensin II-induced aldosterone secretion. Patients with diabetes, heart failure, dehydration, or renal insufficiency have a greater risk of developing hyperkalemia.

MANAGEMENT: Patients should receive dietary counseling and be advised to not use potassium-containing salt substitutes or over-the-counter potassium supplements without consulting their physician. If salt substitutes are used concurrently, regular monitoring of serum potassium levels is recommended. Patients should also be advised to seek medical attention if they experience symptoms of hyperkalemia such as weakness, irregular heartbeat, confusion, tingling of the extremities, or feelings of heaviness in the legs.

MONITOR: Grapefruit juice may modestly decrease and delay the conversion of losartan to its active metabolite, E3174. The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruits. The clinical significance is unknown. Moreover, pharmacokinetic alterations associated with interactions involving grapefruit juice are often subject to a high degree of interpatient variability.

MANAGEMENT: Patients who regularly consume grapefruits and grapefruit juice should be monitored for altered efficacy of losartan. Grapefruits and grapefruit juice should be avoided if an interaction is suspected. Orange juice is not expected to interact.

References

  1. "Product Information. Cozaar (losartan)." Merck & Co., Inc PROD (2001):
  2. Zaidenstein R, Soback S, Gips M, Avni B, Dishi V, Weissgarten Y, Golik A, Scapa E "Effect of grapefruit juice on the pharmacokinetics of losartan and its active metabolite E3174 in healthy volunteers." Ther Drug Monit 23 (2001): 369-73
  3. Ray K, Dorman S, Watson R "Severe hyperkalaemia due to the concomitant use of salt substitutes and ACE inhibitors in hypertension: a potentially life threatening interaction." J Hum Hypertens 13 (1999): 717-20

Moderate
Farxiga + Food

The following applies to the ingredients: Dapagliflozin (found in Farxiga)

GENERALLY AVOID: Alcohol may cause hypoglycemia or hyperglycemia in patients with diabetes. Hypoglycemia most frequently occurs during acute consumption of alcohol. Even modest amounts can lower blood sugar significantly, especially when the alcohol is ingested on an empty stomach or following exercise. The mechanism involves inhibition of both gluconeogenesis as well as the counter-regulatory response to hypoglycemia. Episodes of hypoglycemia may last for 8 to 12 hours after ethanol ingestion. By contrast, chronic alcohol abuse can cause impaired glucose tolerance and hyperglycemia. Moderate alcohol consumption generally does not affect blood glucose levels in patients with well controlled diabetes. A disulfiram-like reaction (e.g., flushing, headache, and nausea) to alcohol has been reported frequently with the use of chlorpropamide and very rarely with other sulfonylureas.

MANAGEMENT: Patients with diabetes should avoid consuming alcohol if their blood glucose is not well controlled, or if they have hypertriglyceridemia, neuropathy, or pancreatitis. Patients with well controlled diabetes should limit their alcohol intake to one drink daily for women and two drinks daily for men (1 drink = 5 oz wine, 12 oz beer, or 1.5 oz distilled spirits) in conjunction with their normal meal plan. Alcohol should not be consumed on an empty stomach or following exercise.

References

  1. Jerntorp P, Almer LO "Chlorpropamide-alcohol flushing in relation to macroangiopathy and peripheral neuropathy in non-insulin dependent diabetes." Acta Med Scand 656 (1981): 33-6
  2. Jerntorp P, Almer LO, Holin H, et al. "Plasma chlorpropamide: a critical factor in chlorpropamide-alcohol flush." Eur J Clin Pharmacol 24 (1983): 237-42
  3. Barnett AH, Spiliopoulos AJ, Pyke DA, et al. "Metabolic studies in chlorpropamide-alcohol flush positive and negative type 2 (non-insulin dependent) diabetic patients with and without retinopathy." Diabetologia 24 (1983): 213-5
  4. Hartling SG, Faber OK, Wegmann ML, Wahlin-Boll E, Melander A "Interaction of ethanol and glipizide in humans." Diabetes Care 10 (1987): 683-6
  5. "Product Information. Diabinese (chlorpropamide)." Pfizer U.S. Pharmaceuticals PROD (2002):
  6. "Product Information. Glucotrol (glipizide)." Pfizer U.S. Pharmaceuticals PROD (2002):
  7. "Product Information. Diabeta (glyburide)." Hoechst Marion-Roussel Inc, Kansas City, MO.
  8. Skillman TG, Feldman JM "The pharmacology of sulfonylureas." Am J Med 70 (1981): 361-72
  9. "Position Statement: evidence-based nutrition principles and recommendations for the treatment and prevention of diabetes related complications. American Diabetes Association." Diabetes Care 25(Suppl 1) (2002): S50-S60
  10. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

Drug and Pregnancy Interactions

The following applies to the ingredients: Losartan

This drug should not be used during pregnancy unless there are no alternatives and the benefit outweighs the risk to the fetus.
-Some authorities state that use is contraindicated throughout pregnancy, while others state that use is not recommended during the first trimester of pregnancy and is contraindicated during the second and third trimesters.

AU TGA pregnancy category: D
US FDA pregnancy category: Not assigned.

Risk Summary: Use of drugs that act on the renin angiotensin system (RAS) during the second and third trimesters of pregnancy increases fetal and neonatal morbidity and death.

Comments:
-Adequate methods of contraception should be encouraged.
-Advise female patients of reproductive potential of the potential risk to a fetus.
-The manufacturer recommends discontinuing this drug as soon as possible when pregnancy is detected.

Animal studies have revealed evidence of fetal and neonatal toxicity and mortality. In humans, use of drugs that act on the RAS during the second and third trimesters increases fetal and neonatal toxicity and death. There are no controlled data in human pregnancy.

AU TGA pregnancy category D: Drugs which have caused, are suspected to have caused or may be expected to cause, an increased incidence of human fetal malformations or irreversible damage. These drugs may also have adverse pharmacological effects. Accompanying texts should be consulted for further details.

US FDA pregnancy category Not Assigned: The US FDA has amended the pregnancy labeling rule for prescription drug products to require labeling that includes a summary of risk, a discussion of the data supporting that summary, and relevant information to help health care providers make prescribing decisions and counsel women about the use of drugs during pregnancy. Pregnancy categories A, B, C, D, and X are being phased out.

References

  1. "Product Information. Cozaar (losartan)." Merck & Co., Inc PROD (2001):
  2. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  3. Cerner Multum, Inc. "Australian Product Information." O 0
  4. "Product Information. COZAAR (losartán)." Organon Pharmaceuticals (2022):
  5. "Product Information. Cozaar (losartan)." Organon Pharma (UK) Ltd (2025):

The following applies to the ingredients: Dapagliflozin (found in Farxiga)

Not recommended during the second and third trimesters of pregnancy

AU TGA pregnancy category: D
US FDA pregnancy category: Not Assigned

Risk Summary: There is insufficient data in pregnant women to determine a drug-associated risk for major birth defects or miscarriage; animal data has shown adverse renal effects with this drug during the renal development period which corresponds to the late second and third trimesters of human pregnancy.

Comments:
-When pregnancy is detected, this drug should be discontinued.
-Poorly controlled diabetes during pregnancy increases maternal and fetal risks for adverse outcomes.

Rat studies have shown adverse renal changes when this drug was administered during the period of renal development corresponding to late second and third trimesters of human development. Renal pelvic and tubule dilations, not fully reversible (within a 1 month recovery period), were observed at all doses studied including the lowest which provided an exposure 15-times the 10 mg clinical dose. There are no adequate well-controlled studies in pregnant women.

Clinical considerations: The estimated background risk of major birth defects is 6% to 10% in women with pre-gestational diabetes with a HbA1c greater than 7% and has been reported to be as high as 20% to 25% in women with HbA1c greater than 10%. Poorly controlled diabetes during pregnancy increases maternal risks for diabetic ketoacidosis, preeclampsia, spontaneous abortions, preterm delivery, and delivery complications; and fetal risks for for major birth defects, stillbirth, and macrosomia related morbidity. Insulin is generally recommended as the drug of choice during pregnancy.

AU TGA pregnancy category D: Drugs which have caused, are suspected to have caused or may be expected to cause, an increased incidence of human fetal malformations or irreversible damage. These drugs may also have adverse pharmacological effects. Accompanying texts should be consulted for further details

US FDA pregnancy category Not Assigned: The US FDA has amended the pregnancy labeling rule for prescription drug products to require labeling that includes a summary of risk, a discussion of the data supporting that summary, and relevant information to help health care providers make prescribing decisions and counsel women about the use of drugs during pregnancy. Pregnancy categories A, B, C, D, and X are being phased out.

References

  1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  2. Cerner Multum, Inc. "Australian Product Information." O 0
  3. "Product Information. Farxiga (dapagliflozin)." Bristol-Myers Squibb (2014):

Drug and Breastfeeding Interactions

The following applies to the ingredients: Losartan

Use is not recommended and a decision should be made to discontinue breastfeeding or discontinue the drug, taking into account the importance of the drug to the mother.

Excreted into human milk: Unknown
Excreted into animal milk: Yes

Comments: The effects in the nursing infant are unknown.

References

  1. "Product Information. Cozaar (losartan)." Merck & Co., Inc PROD (2001):
  2. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  3. Cerner Multum, Inc. "Australian Product Information." O 0

The following applies to the ingredients: Dapagliflozin (found in Farxiga)

Not recommended

Excreted into human milk: Unknown
Excreted into animal milk: Yes

Comment: This drug is not recommended while breastfeeding due to the potential for serious adverse reactions in breastfed infants.

This drug has been found in rat milk at a milk to plasma ratio of 0.49 which means this drug and its metabolites are transferred into milk at a concentration that is approximately 50% of that in maternal plasma. Although, it is unknown if this drug is excreted into human milk, there is potential for serious harm to the developing kidney if the breastfed infant is exposed. Human kidney maturation occurs during the first 2 years of life. Juvenile rats directly exposed to this drug have shown renal pelvic and tubular dilations during maturation. The long-term functional consequences of these effects are unknown. Additionally,decreased weight gain has been associated with lactational exposure in juvenile rats.

References

  1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  2. Cerner Multum, Inc. "Australian Product Information." O 0
  3. "Product Information. Farxiga (dapagliflozin)." Bristol-Myers Squibb (2014):

Therapeutic Duplication Warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

Switch to: Consumer Interactions

Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

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