Can Jardiance Make You Tired? | What Your Body Is Telling You

Yes—some people feel tired on Jardiance, most often from fluid loss, low blood pressure, low sugar (with other meds), or an infection.

Jardiance (empagliflozin) helps your body pee out extra glucose. That “peeing out” part is also why tiredness can show up for some people, especially in the first days or weeks.

Still, fatigue is a vague signal. It can mean “I’m a bit dried out,” or it can be your body waving a red flag that needs quick attention. The goal is to sort out which kind you’re dealing with.

This article breaks down the most common reasons people feel tired while taking Jardiance, what to check at home, what to track for your next appointment, and when you should get help right away.

Can Jardiance Make You Tired After Starting It?

It can. Jardiance increases urination and can lower your blood volume a bit. For some people, that means lower blood pressure, light-headedness, and a drained feeling, especially when standing up.

Tiredness can also show up when Jardiance is taken with other diabetes meds that can cause low blood sugar. And in a smaller number of cases, fatigue can be tied to something you should not wait on, like diabetic ketoacidosis (DKA) or a serious urinary infection.

The fastest way to narrow it down is to pair your symptoms with a few simple checks: hydration signs, blood pressure (if you can measure it), and blood glucose patterns.

Why A Diabetes Medicine Can Make You Feel Worn Out

“Tired” is your brain’s shorthand for a bunch of body states: not enough fluid, not enough fuel, fighting an infection, or a stress response from shifting electrolytes and blood pressure.

Jardiance is not a stimulant and it does not sedate you. If you feel sleepy or weak, it’s usually a side effect chain—your kidneys are pulling extra water into urine, your circulation shifts, or your sugar swings lower than your body likes.

The Most Common Cause: Fluid Loss And Lower Blood Pressure

Jardiance can cause intravascular volume depletion—your circulating fluid volume drops. That can show up as symptomatic hypotension (low blood pressure with symptoms), dizziness, and weakness. The FDA prescribing information calls this out directly under “Volume Depletion.” FDA Jardiance Prescribing Information

If your tiredness comes with any of these, fluid loss is high on the list:

• Light-headedness when you stand up
• Dry mouth, dry lips
• Dark yellow urine or less urine than usual
• Headache that eases after drinking
• Leg cramps or a “flat” feeling in the gym

The NHS lists feeling dizzy, light-headed, or tired as possible signs of dehydration with empagliflozin. NHS Empagliflozin Side Effects

Who Gets This More Often

Fluid-related fatigue is more likely if you already run on the lower side of blood pressure, you’re older, you take a diuretic (“water pill”), or you had vomiting or diarrhea recently. People with reduced kidney function can also be more sensitive to fluid shifts.

What To Try First

Start with the simplest fixes that match the mechanism:

• Drink fluids steadily through the day, not all at once.
• If you sweat a lot, add sodium from food unless you’ve been told to limit it.
• Stand up slowly, especially in the morning.
• If you track blood pressure, check it seated and then after standing for 1–3 minutes.

If fatigue improves within a day or two as hydration and sleep settle, it often points back to fluid loss and adjustment. If it keeps getting worse, move down the checklist below.

Low Blood Sugar Fatigue: Most Likely When Jardiance Is Paired With Other Meds

On its own, Jardiance has a low risk of hypoglycemia. The risk climbs when it’s combined with insulin or medicines like sulfonylureas. Low blood sugar can feel like sudden tiredness, shakiness, sweating, anxiety, hunger, or brain fog.

Clues It’s A Glucose Dip

• You feel weak or shaky and it improves after carbs.
• The tired spell hits at a repeatable time, like late afternoon.
• You’re exercising more than usual without adjusting food or meds.
• Your meter or CGM shows lows or fast drops.

What Helps

Log the pattern for a week: time, glucose, what you ate, activity, and your Jardiance dose time. Bring that to your clinician. Dose adjustments are often about the partner meds, not Jardiance itself.

Infections That Can Drain You: UTIs And Genital Infections

Because Jardiance increases glucose in the urine, it can raise the risk of urinary tract infections and genital yeast infections. The FDA label notes increased risk of genitourinary infections. FDA Warning On Genitourinary Infections

Infections can cause fatigue on their own. Some infections linked with SGLT2 inhibitors can become serious and need quick treatment.

UTI Symptoms That Often Travel With Fatigue

• Burning or pain when peeing
• Urgency or going more often with discomfort
• Lower belly pain, back or side pain
• Fever or chills
• Cloudy or bloody urine

If your tiredness comes with fever, back pain, or urinary symptoms, treat it like a time-sensitive issue. The NHS lists warning signs of a severe UTI for people taking empagliflozin. NHS Severe UTI Warning Signs

Genital Infection Symptoms

Itching, redness, soreness, unusual discharge, or discomfort can show up. These are common reasons people feel run down while their body fights irritation and inflammation. If symptoms are intense, recurring, or paired with fever or severe pain, get help fast.

Table: What Tiredness On Jardiance Can Mean And What To Check

Use this table as a sorting tool. It’s not a diagnosis tool. It’s a way to match your symptoms to the most likely category and the next best check.

Possible Reason	What It Can Feel Like	Best Next Check
Dehydration / Fluid Loss	Dry mouth, dark urine, tired + dizzy on standing	Hydration signs, standing BP if available, urine color
Low Blood Pressure	Light-headed, weak, “heavy eyelids” when upright	Seated/standing BP, review diuretics and salt intake
Low Blood Sugar (With Insulin/Sulfonylurea)	Sudden fatigue, shaky, sweaty, hungry	Fingerstick/CGM data, timing vs meals and activity
Urinary Tract Infection	Tired + burning pee, urgency, pelvic pain, fever	Urinalysis, temperature, symptom timeline
Genital Yeast Infection	Itching, soreness, irritation that wears you down	Symptom check, treatment plan with clinician
Diabetic Ketoacidosis (DKA)	Nausea, stomach pain, tiredness, fast breathing	Urgent care: ketones, labs, medical evaluation
Kidney Stress From Volume Depletion	Fatigue with low fluid intake, illness, diuretics	Clinician review, kidney labs when advised
Not Enough Calories Or Carbs After Diet Change	Low energy, training feels harder, more cravings	Food log, weight trend, glucose trend

Red Flags: When Tiredness Should Not Wait

Some symptoms mean “get evaluated now,” even if you think you can push through. The risk is not the tiredness itself. The risk is the condition behind it.

Diabetic Ketoacidosis Warning Signs

DKA can happen even if glucose is not sky-high with SGLT2 inhibitors. Symptoms can include nausea, vomiting, stomach-area pain, tiredness, and trouble breathing. MedlinePlus lists tiredness as part of the DKA symptom cluster tied to empagliflozin. MedlinePlus Empagliflozin Safety Notes

Get urgent care right away if tiredness is paired with:

• Vomiting or persistent nausea
• Stomach pain
• Rapid or deep breathing
• Confusion or severe weakness
• Fruity-smelling breath

Severe Infection Warning Signs

Seek urgent help if you have fever, back pain, or feel unwell with urinary symptoms. Also get urgent help for severe pain, redness, swelling, or tenderness in the genital area, especially with fever. That pattern can signal a rare, serious infection described in safety warnings for this drug class. The NHS includes this as a reason to seek urgent care. NHS Serious Infection Warning

Fainting Or Near-Fainting

Passing out, near-fainting, or repeated episodes of “I stand up and the room spins” can point to low blood pressure or dehydration that needs medical review. MedlinePlus notes empagliflozin can cause dizziness and fainting when standing up quickly. MedlinePlus Dizziness And Fainting Note

Table: Tiredness Scenarios And What Action Fits

Symptom Pattern	Action Level	Why It Matters
Tired + dry mouth + darker urine + dizziness on standing	Call soon if not improving within 24–48 hours	Fits fluid loss and low BP; can worsen with illness or diuretics
Sudden tired spell + shaky/sweaty + low glucose reading	Call soon to adjust partner meds	Hypoglycemia risk rises with insulin or sulfonylureas
Tired + burning pee + fever or back/side pain	Urgent care today	May be a severe UTI or kidney infection
Tired + nausea/vomiting + stomach pain + fast breathing	Urgent care now	Possible DKA; needs ketone checks and labs
Tired + severe genital pain/redness/swelling + fever	Urgent care now	Rare but serious infection needs rapid treatment
Mild fatigue in week 1–2 with no red flags	Monitor and track	Often reflects adjustment to fluid shifts and sleep disruption from urination

What To Track So You Get Answers Faster At Your Next Visit

Bring clean data. It shortens the “guessing” phase and speeds up safe adjustments.

Five Things Worth Logging For 7 Days

• Medication timing: when you take Jardiance and any other diabetes meds.
• Glucose pattern: fasting, before meals, 2 hours after meals, bedtime, plus any lows.
• Fluid and salt pattern: rough intake, sweating, diarrhea, vomiting, or missed meals.
• Urination changes: waking at night, urgency, burning, or discomfort.
• Energy rating: morning, afternoon, evening with short notes on dizziness, nausea, or fever.

If you have a home blood pressure cuff, add two readings a day: one seated, one standing after 1–3 minutes. That single step often explains “tired + woozy” fast.

Practical Ways People Reduce Fatigue Without Guesswork

These are common, low-risk moves that match how Jardiance works. They are still worth aligning with your own medical plan.

Adjust Fluids With A Simple Rule

If your urine is pale straw most of the day and you are not dizzy when standing, you are often in a decent zone. If urine is dark yellow and you feel wiped out, raise fluid intake and recheck how you feel over the next day.

Handle Nighttime Bathroom Trips

Waking up to pee can wreck sleep, then fatigue shows up even if your blood pressure is fine.

• Take Jardiance earlier in the day if your clinician okays it.
• Stop large fluids 2–3 hours before bed, then sip as needed.
• Keep caffeine earlier in the day.

Be Careful With “Low-Carb Plus Jardiance” If You’re Prone To Ketones

Some people combine Jardiance with sharp carb cuts and intense exercise. That mix can raise ketone risk for certain bodies. If you feel ill with fatigue plus nausea or stomach pain, treat it as a medical issue, not a willpower issue.

Review The Whole Med Stack

Fatigue can come from the combo: diuretics, blood pressure meds, and glucose-lowering meds all tug on fluid balance and energy at once. Your clinician may adjust timing or doses to smooth the day.

When People Usually Feel Better

If tiredness is driven by adjustment to increased urination, many people notice improvement after the first couple of weeks as routines settle and hydration habits match the new baseline.

If fatigue is driven by lows, infections, or DKA risk, it won’t “settle” on its own in a safe way. That’s why matching the symptom pattern matters more than waiting it out.

Realistic Expectations: What Jardiance-Related Fatigue Is Not

It’s usually not “my body is aging overnight.” It’s also usually not a sign that the medication is failing.

Most of the time, fatigue ties back to one of four buckets:

• Fluid loss and lower blood pressure
• Glucose dips from combination therapy
• Infection
• DKA warning signs that need urgent evaluation

Once you know which bucket you’re in, the next step gets clearer. The fix is rarely “push harder.” It’s tracking, a targeted check, and the right level of care.