Want to feel informed before choosing creatine? Controlled trials in adults without known kidney disease have found no deterioration in kidney function at the doses and durations tested. That is reassuring evidence, while personal medical conditions still deserve individual advice.
What the kidney research found
In a 12-week trial of resistance-trained adults eating a high-protein diet, researchers measured kidney filtration directly. Creatine—20 g daily for five days, then 5 g daily—did not cause a significant deterioration compared with placebo. Read the trial.
This provides useful reassurance for similar healthy adults. It does not establish safety for people with kidney disease or every possible duration of use.
Creatine and creatinine: know the difference
Creatine is the supplement ingredient. Creatinine is a breakdown product used in kidney assessment. Taking creatine can affect the context in which a creatinine result is interpreted.
Tell your clinician the product, amount and start date before discussing blood tests. An abnormal result should still be assessed; do not dismiss it because you use a supplement.
Review the Starter’s product details
Keep the first step appropriate for you
If you have kidney disease, unexplained kidney-test results, another medical condition, take medication, are pregnant or breastfeeding, discuss supplementation with your clinician before starting.
Follow the product directions. Water-weight changes or digestive symptoms can occur, and tolerance varies. Stop and seek advice for persistent discomfort; severe or unexplained symptoms need assessment. Our digestion and water-weight guide explains the distinction.
Then make the product choice straightforward
Once you have addressed any personal health questions, focus on the ingredient, serving and format. AEVA’s Starter is designed around Creavitalis® creatine, 300 g of powder and a reusable jar: 60 servings at 5 g each.
A one-time Starter lets you choose the product without committing to recurring orders. For formula or format questions, contact AEVA; for personal medical advice, speak with your clinician.
YOUR FIRST JAR
Choose with a clear view of the product.
See the ingredient, serving and purchase options together. Starter only leaves the next order up to you.
Choose your StarterAlready have your jar? Choose your refills
Launch preview. Ordering is not yet open. Final labeling and batch documentation are not yet published.
Sources
- Lugaresi et al. (2013): measured kidney filtration
- Vilar Neto et al. (2020): creatinine and kidney-injury biomarkers
- Ostojic and Ahmetovic (2008): serving size and digestive symptoms
Sources reviewed September 8, 2026. Research findings concern the ingredient and study participants; they are not results from trials of AEVA.
