Trijardy XR Side Effects: What to Expect and When to Call Your Doctor

Trijardy XR is generally well tolerated, but like all medications, it can cause side effects. Because it combines three different drug classes in one tablet, it carries the side effect profile of all three: empagliflozin (SGLT2 inhibitor), linagliptin (DPP-4 inhibitor), and metformin (biguanide). Knowing what to expect — and what to watch out for — helps you manage your diabetes treatment safely.

The Boxed Warning: Lactic Acidosis

Trijardy XR carries an FDA boxed warning — the most serious type of drug warning — for lactic acidosis. This is a rare but potentially fatal buildup of lactic acid in the blood caused by the metformin component. Risk is highest in patients with:

• Kidney disease or impaired kidney function (eGFR < 45)
• Liver disease or alcoholism
• Age 65 or older
• Heart failure or conditions causing low oxygen levels
• Receiving iodinated contrast dye (CT scan, catheterization)

Get emergency help immediately if you experience: unusual muscle pain, trouble breathing, stomach pain, dizziness, feeling cold, rapid heartbeat, extreme weakness, or feeling unusually tired.

Common Side Effects

These side effects are reported in clinical trials at a frequency of 2% or more in patients taking Trijardy XR. Most are manageable and do not require stopping the medication:

• Upper respiratory tract infections / nasopharyngitis — Cold-like symptoms; most common side effect
• Urinary tract infections (UTIs) — Related to the SGLT2 inhibitor (empagliflozin) increasing glucose in urine; notify your doctor if frequent
• Genital mycotic infections (yeast infections) — Can affect both men and women; also related to SGLT2 mechanism
• Diarrhea and gastrointestinal upset — From the metformin component; often improves after a few weeks; worse on empty stomach
• Constipation, headache, and gastroenteritis — Reported at low rates in clinical trials

Serious Side Effects to Watch For

The following side effects are less common but require prompt medical attention:

• Diabetic ketoacidosis (DKA) — A dangerous buildup of ketones that can occur even with normal blood sugar. Symptoms include nausea, vomiting, stomach pain, confusion, fruity breath, and trouble breathing. Seek immediate care.
• Acute pancreatitis — Linked to the linagliptin component. Symptoms include severe upper abdominal pain radiating to the back, nausea, and vomiting. Stop Trijardy XR and seek care immediately.
• Urosepsis and pyelonephritis — Serious kidney/urinary tract infections. Symptoms include fever, back pain, and urinary symptoms. Seek care urgently.
• Necrotizing fasciitis of the perineum (Fournier's Gangrene) — A rare but serious infection of the genital/rectal area. Symptoms include pain, redness, swelling, or odor. Seek emergency care immediately.
• Volume depletion and low blood pressure — Related to SGLT2-induced diuresis. Can cause dizziness, lightheadedness, or fainting — especially when standing up. Stay well-hydrated.
• Vitamin B12 deficiency — Long-term metformin use can reduce B12 absorption. Your doctor should monitor B12 levels periodically.
• Hypoglycemia (low blood sugar) — More likely if combined with insulin or a sulfonylurea. Symptoms: shakiness, hunger, sweating, confusion. Treat with fast-acting sugar (juice, candy).

Tips to Minimize Side Effects

• Always take Trijardy XR with food (specifically breakfast) to reduce stomach upset from the metformin component
• Stay well-hydrated to reduce the risk of UTIs and volume depletion from empagliflozin
• Avoid alcohol, which increases the risk of both lactic acidosis and DKA
• Notify your doctor before any surgery or CT scan requiring contrast dye
• Keep all follow-up lab appointments to monitor kidney function and B12 levels

For information on drug interactions that can worsen side effects, see our article on Trijardy XR drug interactions.