March is National Kidney Month: What supplement can I take to improve my kidney function?

During National Kidney Month, one topic that comes up often is supplements. Advertisements for vitamins, electrolyte powders, herbal blends, or “kidney detox” products are everywhere. One may wonder if they should take them, especially if they have Chronic Kidney Disease (CKD). 

Supplements are not always as harmless, or as helpful, as they appear. 

Supplements Aren’t Regulated Like Medications 

It is important to know that dietary supplements are not regulated by the U.S. Food and Drug Administration in the same way medications are. 

Before a prescription medication reaches you, it must go through rigorous testing to prove safety and effectiveness. Supplements don’t go through that same process. This means: 

• The amount of vitamins or minerals listed on the label may not always match what’s actually inside.
• Some supplements contain additional ingredients not clearly disclosed.
• Products marketed as “natural” are not automatically safe.

And for Veterans managing CKD, this matters more than you may realize. 

Your Kidneys Filter What Your Body Doesn’t Need

Healthy kidneys act as the body’s filtration system. They help balance fluids, electrolytes, vitamins and minerals. When kidney function declines, certain substances (including vitamins and minerals) can build up in the body. Over time, this build up can lead to imbalances. Some supplements may even place additional stress on the kidneys. 

Marketing vs. What Your Body Actually Needs 

Supplement marketing can be powerful. Labels often promise better energy, detoxification, and improved organ health. It’s easy to feel like you may be missing out if you’re not taking something. For most Veterans, more supplements do not automatically mean better health. In fact, the majority can meet their nutrition needs through everyday foods. A balanced diet provides nutrients in the forms your body absorbs and regulates best. 

The Most Effective Way to Support Kidney Health 

For Veterans living with or trying to prevent kidney disease, the most reliable approach may be surprisingly straightforward: 

1. Eat a balanced, consistent diet- Whole foods provide nutrients in balanced amounts that your body can use effectively. 

Both the anti-inflammatory diet and the Mediterranean diet are considered kidney-friendly because they emphasize plant-based foods, are not overly high in protein and limit sodium and processed foods. 

2. Work with your renal dietitian-  Your lab values, medications, medical history, and kidney function all influence your nutritional needs. What helps one person may not be appropriate for another and your dietary plan may need to adapt over time as your medical situation evolves. Your renal RD will assess the whole picture to create you a personalized plan.
3. Monitor through routine care- Regular lab work helps your care team see how your body is responding and make adjustments before problems develop.

The personalized approach is far safer and more effective than relying on over the counter supplements. 

Always Talk with Your Care Team First 

If you’re considering starting a vitamin, herbal supplement, or nutrition powder, it’s important to talk with your healthcare team first. Your providers can help determine what is appropriate for you. 

This National Kidney Month, we want to acknowledge you for taking charge of your health. Supplements can sound appealing, especially when they promise quick benefits. But when it comes to kidney health, informed choices matter more than marketing claims. 

Instead of falling for the next “greatest” supplement, consider focusing on the foundations that truly support your kidneys: regular appointments, balanced meals, and open conversations with your care team.