According to Gram Research analysis, over 80% of adults with lupus take dietary supplements, and nearly 30% are taking supplements that could potentially interact with their prescription medications. Vitamin D is the most commonly used supplement among lupus patients, taken by about 64% of them, followed by multivitamins at 45%. The study of 451 lupus patients found that those taking multiple medications face the highest risk of supplement-medication interactions.
A new study of 451 adults with systemic lupus erythematosus (SLE), a serious autoimmune disease, found that over 80% take dietary supplements like vitamins and minerals. While supplements can be helpful, the research shows that nearly one-third of these patients are taking supplements that could potentially interact with their prescription medications in harmful ways. The most popular supplements were vitamin D, multivitamins, and calcium. Researchers say doctors need to ask patients more regularly about what supplements they’re taking to prevent dangerous drug interactions.
Key Statistics
A 2026 cross-sectional study of 451 adults with systemic lupus erythematosus found that 80.9% used at least one dietary supplement, with vitamin D being the most common at 64.1% prevalence.
Nearly one-third (29.5%) of lupus patients in a 451-person study were taking supplement-medication combinations with potential for interaction, according to research published in Arthritis Care and Research.
Among 451 lupus patients studied in 2026, those taking five or more prescription medications were significantly more likely to use multiple supplements and experience potential drug interactions.
Multivitamins were used by 45.2% of lupus patients and calcium by 29.7% in a 451-person study, making these the second and third most popular supplements after vitamin D.
The Quick Take
- What they studied: How many people with lupus take dietary supplements and whether those supplements could cause problems when mixed with their prescription medications.
- Who participated: 451 adults with systemic lupus erythematosus from the APPEAL study, which tracked lupus patients in Georgia. The group included people of various ages, education levels, and disease severity.
- Key finding: About 81% of lupus patients use at least one supplement, and about 56% use two or more. Nearly 30% are taking supplement-medication combinations that could potentially interact with each other.
- What it means for you: If you have lupus and take supplements, talk to your doctor or pharmacist about all of them. Some supplements can reduce how well your medications work or cause unwanted side effects. This is especially important if you take multiple medications.
The Research Details
Researchers looked at information from 451 adults with lupus who were part of a larger health study in Georgia. At a single doctor’s visit, participants reported all the dietary supplements and prescription medications they were taking. The researchers then used a database called NatMed Pro to check if any of the supplements could potentially interact with the medications each person was taking. They also looked at which types of people were more likely to use supplements and which groups had the most potential drug interactions.
This research approach is important because it gives a real-world picture of what lupus patients are actually doing with supplements. Rather than just asking what people should do, researchers looked at what they actually do. This helps doctors understand the real risks their patients face and where they need to provide better guidance.
This study has several strengths: it included a large number of participants (451), it was based on actual patient reports rather than guesses, and it used a professional database to check for interactions. However, the study only looked at one moment in time, so we don’t know if supplement use changes over time. The study also only included people from Georgia, so results might be different in other parts of the country. The researchers identified potential interactions based on scientific knowledge, but didn’t track whether these interactions actually caused problems for patients.
What the Results Show
The study found that supplement use is extremely common among lupus patients. More than 8 out of 10 participants (80.9%) took at least one dietary supplement, and more than half (55.9%) took two or more supplements. The most popular supplements were vitamin D (taken by 64.1% of participants), multivitamins (45.2%), calcium (29.7%), vitamin B12 (10.6%), and iron (9.3%). These supplements are popular because lupus patients often have low levels of vitamin D and calcium, and some lupus medications can affect B12 and iron levels. The most concerning finding was that nearly one-third of participants (29.5%) were taking a supplement-medication combination with potential for an interaction. This means their supplements could potentially interfere with how their prescription medications work.
The study also found patterns in who was most likely to use multiple supplements. Older patients, those with more education, people taking five or more prescription medications, and those who visited their doctor more often were more likely to use multiple supplements. Patients with more severe lupus damage and those taking many medications were more likely to have potential supplement-medication interactions. These patterns suggest that sicker patients and those on more medications are both taking more supplements and facing higher risks of interactions.
Previous research has shown that supplement use is common in people with chronic diseases, but this study provides specific numbers for lupus patients. The finding that 80% use supplements is higher than in some other chronic disease groups, suggesting lupus patients are particularly interested in supplementing their treatment. The 30% rate of potential interactions is concerning and suggests this is a bigger problem in lupus care than previously documented.
This study only looked at one point in time, so we don’t know if supplement use changes over the course of a year or longer. The study only included people from Georgia, so results might be different in other regions. The researchers identified potential interactions based on scientific databases, but they didn’t actually track whether these interactions caused real health problems for patients. Some potential interactions identified might be minor or manageable with proper timing of doses. The study relied on patients accurately reporting what supplements and medications they take, and some people might forget or not mention everything they use.
The Bottom Line
If you have lupus, tell your doctor and pharmacist about every supplement you take, including vitamins, minerals, and herbal products. Ask them specifically whether each supplement could interact with your lupus medications. Don’t assume that because something is natural or available without a prescription that it’s safe to take with your medications. Consider keeping a written list of all supplements and medications to bring to doctor visits. This is especially important if you take multiple medications.
This research is most important for people with lupus who take supplements, their doctors, and their pharmacists. If you have lupus and take any dietary supplements, you should discuss this with your healthcare team. People with other autoimmune diseases might also benefit from having similar conversations with their doctors, though this study specifically looked at lupus.
Changes in supplement use should be discussed with your doctor before you make them. If your doctor identifies a potential interaction, they may recommend stopping a supplement, changing when you take it, or switching to a different supplement. You might notice effects within days to weeks if a supplement was interfering with your medication, but some effects take longer to appear.
Frequently Asked Questions
Can dietary supplements interact with lupus medications?
Yes, research shows that nearly 30% of lupus patients taking supplements have potential interactions with their medications. Vitamin D, multivitamins, and calcium are common, but they can affect how medications work. Always discuss supplements with your doctor before taking them.
What supplements do most people with lupus take?
A study of 451 lupus patients found that vitamin D (64%), multivitamins (45%), and calcium (30%) are the most commonly used supplements. These are popular because lupus and lupus medications can affect vitamin levels.
Should I stop taking supplements if I have lupus?
Don’t stop without talking to your doctor first. Some supplements may be helpful for lupus patients, but your doctor needs to know what you’re taking to check for interactions with your medications and adjust your treatment plan accordingly.
How do I know if my supplement is interacting with my lupus medication?
Signs include changes in how well your medication works, new side effects, or unusual symptoms. The best approach is to tell your doctor about all supplements before starting them. Your pharmacist can also check for interactions using professional databases.
Why do lupus patients take so many supplements?
Lupus and its medications can cause vitamin deficiencies, particularly in vitamin D, calcium, and B12. Patients often take supplements to prevent or treat these deficiencies, but they should do this under medical supervision to avoid interactions.
Want to Apply This Research?
- Create a daily log of all supplements and medications taken, including the time of day and any symptoms or side effects noticed. Track this weekly to identify patterns between supplement use and how you feel.
- Use the app to set a reminder to review your complete supplement and medication list with your doctor at each visit. Take a photo of all supplement bottles to share with your healthcare team.
- Monthly, review your supplement list in the app and note any changes in symptoms, energy levels, or medication effectiveness. Flag any new supplements before starting them to check for interactions.
This research describes supplement use patterns and potential interactions in lupus patients. It does not provide medical advice. If you have lupus, consult your doctor or pharmacist before starting, stopping, or changing any supplements or medications. Never change your lupus treatment without professional guidance. This study identified potential interactions based on scientific databases but did not track whether these interactions caused actual harm. Individual risks vary based on your specific medications, health conditions, and dosages.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.