โ ๐ฆ๐๐๐๐ก๐ง๐๐๐๐๐๐๐๐ฌ ๐ข๐ฃ๐ง๐๐ ๐๐ ๐๐ข๐ฆ๐๐๐: Max-strength vitamin D3 (5000IU+) can overload the body with calcium. We THIRD-PARTY TEST & VERIFY our OPTIMAL 4000IU dosage for 100% PURITY and POTENCY.