Experts explain the science on supplements to help you determine which are worth your money—and which are just hype.

AG1 has been a frontrunner in the greens powder world for good reason. With a science-backed formula designed to fill nutritional gaps and enhance whole-body health, it earns its title as our best ...

As a supplement, vitamin D3 has a higher bioavailability than vitamin D2, meaning it’s more easily absorbed into the gut, says Laura Domrose, a registered dietitian nutritionist at The Ohio ...

As a supplement, vitamin D3 has a higher bioavailability than vitamin D2, meaning it’s more easily absorbed into the gut, says Laura Domrose, a registered dietitian nutritionist at The Ohio ...

Nutritionists discuss the science, benefits, and best supplement products to try. ... This once-daily formula contains 5,000 IU of fat-soluble vitamin D3.

Akasha Naturals Vitamin D: It packs 5000 IU of natural vitamin D3, the kind your body absorbs best [1]. This vitamin D3 helps your body use calcium and phosphorus, which are vital for strong bones.

The formula is packed with collagen, biotin, vitamin D3, and EVNol Max—an effective form of vitamin E clinically proven to promote hair growth—to make your strands longer and stronger.

The best vitamin D supplements for 2025 are: Best overall – Nutrition Geeks vitamin D3 1,000IU: £6.99, Amazon.co.uk; Best budget buy – Myvitamins vitamin D3 softgels, 1,000IU: £2.99 ...

Why we chose it: Pure Encapsulations Vitamin D3 gets our pick as the best high dose vitamin D option because it’s third-party tested and provides 10,000 IU per serving. If you have a severe ...

The Best Vitamin D3 Supplements, According to RDs. Story by Ashley Brafman, MPH, RD • 3d. E veryday Health independently vets all recommended products.

Finding the best vitamin D3 supplement can take some time, and since everybody is different, the right formula will depend on your needs. To help you find the best fit, we researched 20 vitamin D3 ...