The 5 Best Supplements for Women, Tested And Reviewed By A Dietitian

Our best overall? Arctic Goddess - Reindeer Organ Superfood

Dietitian MS
Published: May 09, 2025 9:59 AM EDT

Supplements like multivitamins and protein powders are powerful tools for filling nutritional gaps and supporting specific health goals, like improving sleep, sharpening focus, or boosting energy and immunity. As a dietitian who’s reviewed and tested dozens—if not hundreds—of products, I can confidently say supplements can make a noticeable difference. But, only if you choose the right ones and use them to supplement a healthy lifestyle.

In my experience, high-quality, evidence-based formulas set the best supplements apart from the rest—no unnecessary fillers or trendy gimmicks, just intentional blends to help us thrive. The ones featured ahead stand out for qualities I look for before using it myself or recommending it to a client or loved one, such as smart formulation, quality sourcing, and transparency. But before swiping your credit card number, it’s important to consider ingredients, usage, dose, and third-party testing.

Every ingredient should be purposeful. Look for formulas that use well-researched, bioavailable nutrient forms—like vitamin D3 or methylated B vitamins—so your body can absorb and use them effectively. At the same time, skip products loaded with unnecessary extras like artificial colors, preservatives, or fillers that don’t contribute to your well-being.

Consider how a supplement fits into your daily routine. Some users may look for one that’s only taken once a day, while select supplements require food for better absorption. One that aligns with your lifestyle is more likely to be used consistently, which is key to seeing results.

It’s not just what’s in the supplement—it’s how much, too. The best supplements provide clinically effective doses, meaning the amounts shown in research to offer real benefits. Watch out for products that include impressive-sounding ingredients in quantities too small to make a difference.

For added peace of mind, look for supplements that undergo independent testing by third-party organizations. Certifications from groups like NSF, USP, or ConsumerLab confirm that what’s on the label is what’s in the package, that the product is free from harmful contaminants, and that it’s made to high-quality standards.

I’m a dietitian with nearly a decade of experience in nutrition writing and editing. I also have an M.S. in Nutrition and Dietetics from Saint Louis University. After carefully evaluating dozens of supplements over the years, I finally found these holy grails. When evaluating these supplements, I didn’t just skim the label—I personally tried them, paying close attention to how they fit into a daily routine and who they might work best for. The Modern Women team, led by fitness commerce editor Megan E. Davis also pulled from their extensive experience with these supplements to make picks and give input.