Vitamin D3
CholecalciferolVitamin D3 oilVitamin D3 supplement
Vitamin
Vitamin D3 is a type of vitamin that helps our bodies absorb calcium and keep our bones strong. It's also important for our immune system and can help prevent diseases like rickets and osteoporosis.
Low Concern
Source: FDA GRAS list
Vitamin D3 is generally considered safe when taken in recommended amounts, but high doses can cause side effects like nausea and headaches.
No result found for this ingredient.
r/Biohackers
212
4 years of vitamin D3 supplementation protected telomere length from attrition in leukocytes
Vitamin D Screening and Supplementation-A Novel Approach to Higher Success: An Update and Review of the Current Literature.
Wiedemann TG, Jin HW, Gallagher B
2025
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Last updated: May 16, 2026