Are your supplements even doing anything? Let's find out.

Most products underdose to save money. We'll tell you if you'd need 3 pills to match what studies actually use.

Some stuff your body can't absorb. Some you're already getting from food. We'll be honest about what's actually useful.

Zinc blocks copper. Iron blocks everything. Calcium and magnesium compete. We check 59,000+ known interactions.

Plain English. What it helps with, how long until you feel it, and who it's actually for. No jargon.

Tell us what prescriptions you take. We'll check for conflicts with your supplements using clinical databases.