Dapagliflozin

Type 2 Diabetes Management

Dapagliflozin is used alongside diet and exercise to improve blood sugar control in adults and children 10 years of age and older with type 2 diabetes. It helps the kidneys remove excess sugar from the body through urination.

Heart Failure

In adults with heart failure, this medication is used to reduce the risk of hospitalization and death from cardiovascular causes. It is often prescribed for patients with heart failure even if they do not have diabetes.

Chronic Kidney Disease

Dapagliflozin is used to treat chronic kidney disease in adults. It is intended to help slow the progression of the disease and reduce the risk of:

• Significant loss of kidney function.
• Kidney failure requiring dialysis or a transplant.
• Death due to heart or blood vessel problems.

Usage Limitations

This medication is not intended for the treatment of type 1 diabetes. It is also not used to treat diabetic ketoacidosis, which is a life-threatening condition involving high levels of ketones in the blood or urine.

How the Kidneys Process Sugar

Under normal conditions, the kidneys filter sugar out of the blood and then reabsorb it back into the body. Dapagliflozin interferes with this process by blocking a specific protein called SGLT2, which is responsible for most of that reabsorption.

When SGLT2 is blocked, the kidneys stop returning as much sugar to the bloodstream. Instead, the excess sugar is eliminated from the body when you urinate. This helps lower blood sugar levels in adults with type 2 diabetes.

Heart and Kidney Protection

Dapagliflozin also helps protect the heart and kidneys, though the reasons for this are more complex than just lowering blood sugar. By removing sugar and salt (sodium) from the body, the medication can:

• Reduce fluid strain: It helps the body get rid of extra fluid, which decreases the amount of work the heart must do to pump blood.
• Lower kidney pressure: It can reduce the internal pressure in the kidneys, which helps prevent long-term damage and slows the progression of chronic kidney disease.
• Support heart function: It reduces the risk of heart failure-related hospitalizations by improving how the heart handles fluid and pressure.

Common Side Effects

Dapagliflozin may cause several mild side effects as the body adjusts to the medication. These often include:

• Genital yeast infections in men and women
• Urinary tract infections
• Increased urination, including at night
• Back pain
• Nausea or constipation
• Sore throat or runny nose

Serious Side Effects

Some side effects require immediate medical attention. Contact a healthcare provider right away if you notice:

• Ketoacidosis: This is a serious condition where ketones build up in the blood. Symptoms include nausea, vomiting, stomach pain, confusion, and trouble breathing.
• Dehydration: This drug can cause you to lose too much body water, leading to dizziness, lightheadedness, or fainting when you stand up.
• Fournier's Gangrene: A rare but severe infection of the tissue under the skin in the genital area. Seek help for pain, redness, or swelling in the genitals or anus accompanied by fever.
• Kidney Problems: Symptoms may include swelling in the feet or ankles and changes in how much you urinate.
• Low Blood Sugar: When taken with other diabetes medications, you may experience shakiness, sweating, fast heartbeat, or hunger.
• Serious Allergic Reactions: Signs include hives, skin rash, or swelling of the face, lips, or tongue.

Ketoacidosis

Dapagliflozin can cause ketoacidosis, a serious and potentially life-threatening condition where the body produces high levels of blood acids called ketones. This can occur even if blood sugar levels are not significantly elevated. Symptoms may include nausea, vomiting, abdominal pain, unusual tiredness, and trouble breathing.

Dehydration and Kidney Function

This medication may cause dehydration, which is the loss of too much body water and salt. Dehydration can lead to a sudden drop in blood pressure, dizziness, or fainting, especially when standing up. People with existing kidney disease, the elderly, or those taking blood pressure medications like diuretics are at higher risk. Healthcare providers typically assess kidney function before starting treatment and monitor it periodically thereafter.

Serious Infections

• Fournier's Gangrene: A rare but very serious bacterial infection of the skin and tissues in the genital and anal area, known as necrotizing fasciitis of the perineum, has been reported in people taking SGLT2 inhibitors.
• Genital Yeast Infections: There is an increased risk of fungal infections of the vagina or penis while taking this medication.
• Urinary Tract Infections: Serious urinary tract infections, including those that spread to the kidneys or bloodstream, may occur and may require hospitalization.

Other Precautions

Dapagliflozin is generally not recommended during the second and third trimesters of pregnancy as it may affect the developing kidneys of the fetus. It should not be used by individuals on dialysis. When used in combination with insulin or certain other diabetes medications, the risk of low blood sugar (hypoglycemia) increases, which may require a dosage adjustment of the other medications.

Pregnancy

The use of dapagliflozin is typically avoided during the second and third trimesters of pregnancy. Research suggests that the medication may interfere with the development and maturation of the fetal kidneys during these stages. There is currently limited data regarding the safety of this drug during the first trimester of pregnancy.

If you are pregnant or planning to become pregnant, it is important to consult your healthcare provider. They will evaluate the risks and benefits to determine the most appropriate treatment for managing your condition safely during pregnancy.

Breastfeeding

It is not known if dapagliflozin passes into human breast milk. Because of the potential for serious adverse reactions in nursing infants—specifically related to kidney development—breastfeeding is not recommended while taking this medication. Patients should discuss with their doctor whether to stop breastfeeding or discontinue the medication, taking into account the importance of the drug to the mother's health.

Available Forms

Dapagliflozin is primarily available in the following dosage form:

• Oral Tablet: This medication is taken by mouth, typically once per day.

Dapagliflozin is also available in combination with other medications, such as metformin or saxagliptin. These combination products may be available as:

• Immediate-release tablets
• Extended-release tablets

FDA Approval and Indications

Dapagliflozin is FDA-approved for use in adults with type 2 diabetes to improve blood sugar control when used with diet and exercise. It is also approved to reduce the risk of hospitalization for heart failure in adults with type 2 diabetes and established cardiovascular disease or multiple risk factors. Furthermore, it is indicated to reduce the risk of kidney function decline, kidney failure, and cardiovascular death in adults with chronic kidney disease.

Safety Warnings and Regulatory Actions

The FDA has required several safety-related label updates for dapagliflozin and other drugs in the SGLT2 inhibitor class:

• Ketoacidosis: Labels include warnings about the risk of ketoacidosis, a serious condition involving high levels of acid in the blood. This can occur even if blood sugar levels are not very high.
• Serious Infections: The FDA has warned about the risk of severe urinary tract infections and a rare but life-threatening bacterial infection of the genital area known as Fournier’s gangrene.
• Renal Monitoring: Regulatory updates have addressed the use of dapagliflozin in patients with kidney impairment, including guidance on monitoring kidney function before and during treatment.

How Dapagliflozin Affects Weight

Dapagliflozin belongs to a class of medications called sodium-glucose cotransporter 2 (SGLT2) inhibitors. While its main purpose is to treat type 2 diabetes, heart failure, and chronic kidney disease, weight loss is a common side effect observed in clinical studies and patient use.

Mechanism of Weight Loss

The medication works by preventing the kidneys from reabsorbing glucose (sugar) back into the bloodstream. Instead, the excess sugar is removed from the body through urine. Because glucose contains calories, the process of excreting it results in a daily loss of calories, which can lead to a decrease in body weight over time.

Clinical Considerations

• Not a weight-loss drug: Regulatory agencies have not approved dapagliflozin as a primary treatment for obesity or weight management.
• Diet and exercise: The medication is intended to be used alongside a healthy diet and regular physical activity, which also contribute to weight changes.
• Individual results: The amount of weight lost varies between individuals and may depend on the dosage and other medications being taken simultaneously.

It is important to use this medication only as prescribed for its approved conditions. If you have concerns about your weight or how this medication affects your body, consult a healthcare professional.