Cod liver oil

Tier 2 — promising · Omega-3 · Vitamin A · Vitamin D

A traditional supplement that provides omega-3 EPA and DHA alongside preformed vitamins A and D. Good option for people in northern climates with limited sun exposure. However, the vitamin A content limits how much you can safely take — high doses risk vitamin A toxicity, especially in pregnancy. Modern concentrated fish oil provides more EPA and DHA per capsule without the vitamin A ceiling.

Dose: 1 teaspoon/day (providing ~1 g omega-3 + 1,000 IU D + 3,000 IU A); do not exceed due to vitamin A