How to Sleep Better With C3G

6 Tips for Better Sleep With C3G

6 Tips for Better Sleep With C3G
Sleep is one of the most powerful ways that the body restores itself.

Yet getting enough uninterrupted rest isn’t always possible, especially when you’re living with complement 3 glomerulopathy (C3G), an extremely rare form of kidney disease.

A trip to the bathroom in the middle of the night, tight or achy legs, and swelling that makes it difficult to get comfortable can all disturb your sleep.

Concerns about your health or treatment may also keep your mind active at bedtime.

You may not be able to prevent every restless night, but these expert-recommended tips may help you sleep better with C3G.

1. Ask About Taking Diuretics Earlier in the Day

Your C3G treatment plan may include a diuretic — sometimes called a water pill — to help manage swelling.

These medications help your body remove extra fluid, but they can make you urinate more often, which can be problematic when they’re taken later in the day.

Waking up several times throughout the night to use the bathroom can break your sleep into short stretches, and you may feel unrested the next day.

Ask your nephrologist whether you can take your diuretic earlier in the day, says Karen Papez, MD, division chief of nephrology at Phoenix Children’s in Arizona. Taking a diuretic six or more hours before bedtime gives the medication time to do most of its work while you’re still awake and helps reduce nighttime bathroom trips.

Other factors may contribute to nighttime urination. The kidneys may also have trouble concentrating urine when C3G affects kidney function, says Stefanie Diaz, MD, a board-certified nephrologist and a member of the teaching faculty at the University of Texas in Tyler.

Healthy kidneys make less urine at night and concentrate it, so the body holds on to more water.

With decreased kidney function, you may produce more urine at night and need to use the bathroom more often.

Fluid intake and uncontrolled blood sugar may also contribute to increased urination, Dr. Diaz says.

Along with discussing your diuretic schedule with your care team, here are some steps you can take to limit nighttime bathroom trips:

  • Avoid drinking large amounts during the two to four hours before bed, while continuing to follow the personalized fluid recommendations from your kidney care team.

  • Limit coffee, tea, soda, and other caffeinated drinks later in the day, Diaz advises. Caffeine can increase urine production at night.

  • Tell your doctor if nighttime urination is new or worsening, which may indicate a urinary tract infection, high blood sugar, or swelling or medication effects that need attention, Diaz says.

2. Manage Swelling During the Day for More Comfortable Sleep

If you experience swelling from C3G, you may notice that your legs and feet feel heavier or tighter by evening.

Swelling can develop when protein leaks into the urine or the kidneys can’t remove excess fluid effectively, Diaz says.
Pressure and discomfort from swelling in the legs and feet can make it challenging to settle into a comfortable position once you’re ready for bed.

Managing swelling throughout the day may make bedtime easier. Here are some tips:
  • Follow the sodium limit prescribed by your kidney care team to help reduce fluid retention.

  • Elevate your legs during the day when possible, which may help keep fluid from pooling in your feet and lower legs, Diaz says.
  • Take your diuretics exactly as prescribed to help your kidneys remove excess salt and fluid.

  • Ask your nephrologist whether compression socks or other compression garments are appropriate, since they can be helpful but aren’t right for everyone, says Diaz.
  • Use a body pillow or other supportive pillows to make swollen areas more comfortable once you’re in bed, Dr. Papez suggests.
Tell your nephrology team if the swelling increases quickly or if you experience a sudden change in your breathing.

Shortness of breath when lying flat may mean that excess fluid needs prompt medical attention, Diaz says.

3. Find Relief From Leg Cramps and Restless Legs at Night

Nighttime leg cramps can seem to come out of nowhere, especially as C3G progresses and kidney function declines.

 Restless legs syndrome, which is common in people with chronic kidney disease, often causes an uncomfortable urge to move your legs while you’re sitting or lying down, particularly at night.

Leg cramps can wake you suddenly, while restless legs syndrome can repeatedly disrupt your sleep.

Diaz says that these discomforts may be related to several factors, such as:

  • Iron deficiency
  • Anemia
  • Imbalances in electrolytes, such as potassium and magnesium
  • Medication side effects
  • Waste buildup as kidney disease advances

Relief often starts with identifying the cause, so the first step is to let your nephrologist know if leg cramps or restless legs occur frequently or disturb your sleep. Your care team can recommend treatment based on the cause.

Diaz also suggests the following strategies:

  • Try gentle stretching or take a short walk earlier in the evening to loosen tight muscles and reduce restlessness.
  • Use pillows to support your legs in a comfortable position.
  • Ask your nephrologist whether a heating pad or cold pack is appropriate for your symptoms. Follow their guidance on how to use it safely, and don’t sleep with a heating pad on.
  • Try relaxation techniques, such as 4-7-8 breathing (inhale 4 counts, hold 7, exhale 8) when discomfort makes it difficult to settle down.
  • Stay within the fluid target recommended by your kidney care team. Don’t try to stop cramps by drinking extra water unless your care team advises you to.
  • Ask your nephrologist whether blood tests could help identify an iron deficiency, electrolyte imbalances, or another cause of your symptoms.
Avoid starting potassium or magnesium supplements on your own, Diaz advises. Reduced kidney function can allow potassium or magnesium to build up in the body, so talk with your nephrology team about whether you need a supplement and what dose is safe for you.

If muscle aches or joint pain are keeping you awake, check with your doctor first before reaching for an over-the-counter pain reliever. Certain medications, including nonsteroidal anti-inflammatory drugs like ibuprofen (Advil, Motrin) and naproxen (Aleve), can harm the kidneys, especially with prolonged use or if you’re dehydrated.

4. Get Ahead of Nighttime Itching

Itching can be hard to ignore when you’re lying in bed and have fewer distractions than you did during the day. Kidney disease–related itching may have several causes, including dry skin and a buildup of toxins or certain minerals in the body.

“Itching can be disruptive and lead to multiple awakenings,” says Diaz, who notes that although itching isn’t a direct symptom of C3G, it most commonly occurs if the condition leads to more advanced chronic kidney disease.

Protecting your skin barrier and addressing underlying mineral imbalances can help keep nighttime itching from disturbing your sleep.

 Diaz suggests the following tips:
  • Keep your bedroom cool, as warm temperatures can make itching more noticeable.
  • Avoid very hot showers, which can dry and irritate your skin.
  • Choose mild, fragrance-free cleansers and apply a thick, unscented moisturizing cream right after bathing to help hold moisture in your skin.
  • Ask your kidney care team whether one of your medications could be contributing to itching.
  • Try to pat or press itchy skin, rather than scratching it, to avoid further irritation.
  • Talk with your doctor about checking your calcium and phosphorus levels and whether treatment in those areas may help.

Let your nephrology team know if itching is persistent or regularly disrupts your sleep. Identifying and treating the cause may provide more relief than relying on skin-care changes alone.

5. Give Yourself Time to Wind Down

Concerns about symptoms and questions about your diagnosis and treatment can be difficult to set aside at bedtime. Those thoughts can keep your mind alert even when C3G causes you to feel fatigued.

“Understanding the health condition can help alleviate some anxiety,” says Papez, who suggests asking your care team for reliable educational materials to help you understand what’s happening in your body and what to expect. With this information, you can feel better prepared and have a clearer sense of your next steps.

While information can be helpful during the day, Diaz suggests giving your mind a break before bed. Both experts note that a wind-down routine can create that boundary before bed, and they recommend the following:

  • Set a stopping point for checking test results, blood pressure readings, or other health information, so that you aren’t reviewing these things at bedtime.
  • Dim the lights and put away your phone, tablet, and other electronics as bedtime approaches, to help your brain prepare for sleep.
  • Write down concerns, questions for your doctor, or tasks for the next day, so that you don’t have to keep working through them in bed.
  • Try guided meditation, mindfulness, progressive muscle relaxation (slowly tense and release each muscle group, from toes to forehead), prayer, or another calming practice that feels comfortable and relaxing to you.
  • Keep naps short — about 20 minutes or less — and take them early in the afternoon, so that they’re less likely to interfere with nighttime sleep.

  • Exercise can relieve stress and help you sleep, but try to be active earlier in the day when possible, as a late workout may keep some people feeling wired at bedtime.
Diaz also recommends asking about cognitive behavioral therapy for insomnia (CBT-I). This structured treatment combines sleep education and strategies for addressing worries and habits that may keep you awake.

6. Review Medication Timing and Side Effects With Your Care Team

Sleep problems that continue even after adjusting your bedtime routine may be related to a medication you take for C3G or another health condition.

Corticosteroids, such as prednisone, are part of C3G treatment for some people and help reduce inflammation in the kidneys.

These medications can also cause insomnia, restlessness, anxiety, or mood changes, Diaz says.
“Some patients have significant improvement in sleep by taking the [corticosteroid] dose in the morning,” Papez says. For people taking a once-daily dose of corticosteroids, taking the medication in the morning may give its stimulating effects more time to wear off before nighttime, though you should always ask your prescriber before making changes on your own.

Complement inhibitors don’t generally cause insomnia, Diaz says, but other medications may also affect sleep. Keep your care team informed about the following:

  • If your treatment includes tacrolimus (Prograf), cyclosporine (Neoral or Sandimmune), or another immunosuppressant, tell your nephrologist if you experience insomnia, tremors, headaches, or frequent urination that interferes with sleep, Diaz advises.
  • Notify your care team if you feel unusually sleepy during the day after starting or changing a blood pressure medication. Papez says that some of these medications can cause excess drowsiness, and your doctor can help make adjustments if appropriate.
  • Keep a consistent bedtime to give your body cues that it’s time to sleep, Diaz advises.

Discuss any noticeable sleep changes with your care team, and never change a medication’s dose or timing on your own.

When to Call Your Doctor

Small adjustments to your routine can often help you get better sleep with C3G. But sleep problems that linger or a new symptom that disrupts your rest are reasons to loop in your care team. They can look into the cause and determine whether you need further evaluation or treatment.

Seek medical attention right away if swelling worsens quickly or you develop shortness of breath, especially when lying flat, as these can be signs of fluid overload.

Diaz and Papez also recommend contacting your care team if:

  • Sleep problems last longer than two weeks.
  • Daytime fatigue or sleepiness begins to interfere with work, school, or other daily activities.
  • Insomnia, frequent awakenings, nightmares, or other sleep changes begin after starting a medication or changing a dose or timing.
  • Nighttime urination becomes more frequent.
  • Itching, leg cramps, or restless legs repeatedly wake you or make it difficult to fall asleep.
  • Anxiety regularly interferes with sleep or affects your mood or daily life.
If you develop symptoms of depression or thoughts of suicide, seek help right away.

Call or text 988 for support, or call 911 if you or someone else is in immediate danger.

Resources We Trust

EDITORIAL SOURCES
Everyday Health follows strict sourcing guidelines to ensure the accuracy of its content, outlined in our editorial policy. We use only trustworthy sources, including peer-reviewed studies, board-certified medical experts, patients with lived experience, and information from top institutions.
Resources
  1. Why Is Sleep Important? National Heart, Lung, and Blood Institute. March 24, 2022.
  2. Gopal A et al. Sleep Disorders in CKD: A Review. American Journal of Kidney Diseases. June 2025.
  3. Ridgway A et al. Nocturia and Chronic Kidney Disease: Systematic Review and Nominal Group Technique Consensus on Primary Care Assessment and Treatment. European Urology Focus. January 2022.
  4. Youngblood Gregory S. What to Know About C3G Treatments, From Lifestyle Adjustments to Medications and Dialysis. Mayo Clinic. May 14, 2025.
  5. Diuretics. Cleveland Clinic. December 4, 2024.
  6. Nocturia. Cleveland Clinic. July 22, 2026.
  7. What Is Nocturia? Urology Care Foundation. August 2023.
  8. Nguyen L et al. Canadian Urological Association Best Practice Report: Diagnosis and Management of Nocturia. Canadian Urological Association Journal. May 10, 2022.
  9. 5 Reasons Your Legs May Be Swollen and What to Do About It. Cleveland Clinic. September 23, 2022.
  10. Zhou J et al. Analysis of Potential Categories of Sleep Problems in Non-Dialysis Patients With Chronic Kidney Disease. Frontiers in Physiology. April 21, 2026.
  11. How Much Sodium Is Safe for Kidney Patients? National Kidney Foundation. January 5, 2022.
  12. Diuretics. American Kidney Fund. October 6, 2026.
  13. Hypervolemia. Cleveland Clinic. May 10, 2022.
  14. Billany RE et al. Muscle Weakness, Pain, and Fatigue Impair Daily Function in Chronic Kidney Disease: A Cross-Sectional Analysis From the I-RACE Study. Renal Failure. March 4, 2026.
  15. Safarpour Y et al. Restless Legs Syndrome in Chronic Kidney Disease — a Systematic Review. Tremor and Other Hyperkinetic Movements. March 29, 2023.
  16. Restless Legs Syndrome. Cleveland Clinic. June 8, 2026.
  17. Magnesium. National Institutes of Health: Office of Dietary Supplements. January 6, 2026.
  18. Potassium. National Kidney Foundation. February 1, 2023.
  19. Safe Medicine Use With Chronic Kidney Disease. National Kidney Foundation. April 21, 2025.
  20. Pruritus (Itchy Skin). National Kidney Foundation.
  21. Itching and Kidney Disease. National Kidney Foundation. September 27, 2022.
  22. Insomnia. Mayo Clinic. January 16, 2024.
  23. Healthy Sleep Habits. National Heart, Lung, and Blood Institute. March 24, 2022.
  24. Cognitive Behavioral Therapy for Insomnia (CBT-I). Cleveland Clinic. February 5, 2026.
  25. Prednisone and Other Corticosteroids. Mayo Clinic. January 21, 2026.
  26. Complement 3 Glomerulopathy (C3G). Cleveland Clinic. June 10, 2023.
  27. Prednisone Side Effects and How to Feel Better When Taking Steroids. Cleveland Clinic. December 17, 2024.
  28. Understanding the Link Between Chronic Disease and Depression. National Institute of Mental Health. 2024.
Sean-Hashmi-bio

Sean Hashmi, MD

Medical Reviewer

Sean Hashmi, MD, is an experienced nephrologist and obesity medicine specialist based in Southern California. As the regional director for clinical nutrition and weight management ...

Maggie-Aime-bio

Maggie Aime, MSN, RN

Author

Maggie Aime is a registered nurse with over 25 years of healthcare experience, who brings medical topics to life through informative and inspiring content. Her extensive nursing ba...