Supplement School

In this comprehensive guide, we share the top 15 dietary sources of vitamin B12, backed by data and practical advice, and much more, including a deep dive on supplementation.

Vitamin D supplements are safe when taken as directed. Learn who may need them, how much to take, possible side effects, and what to avoid combining with vitamin D.

 

Vitamin D and D3 are often used interchangeably, but they’re not exactly the same. Learn the key differences between vitamin D2 and D3, how each one works in the body, and which form may be more effective at raising vitamin D levels, plus dosage guidance, interactions, and what to consider before choosing a supplement.

Explore common allergy triggers, medical treatment options, and natural home remedies that may help support your comfort during allergy season.

Zinc is the second-most abundant metal in the body, second only to iron. It's needed by every cell!

Elderberry isn’t a magic cure—but research suggests it may offer benefits for immune support, cold symptom relief, and antioxidant activity. Effect sizes vary, and more large, high-quality studies are needed. If you're thinking about trying it, pick products with clear labeling, high quality control, and speak with your healthcare provider.