Can you eat fish oil with vitamin a (cod liver oil) while pregnant?
Not advisedSkip any fish liver oil. Plain omega-3 fish body oil is fine in pregnancy, but cod liver oil and other fish liver oils are packed with retinol, a form of vitamin A that can harm a developing baby.
Why
The NHS is explicit that pregnant people should not take fish liver oil supplements such as cod liver oil, because they are concentrated in retinol and too much vitamin A can cause birth defects. Oil pressed from the body of the fish, which is what standard omega-3 and DHA capsules contain, has essentially no retinol and ACOG counts those omega-3 fats as useful for the baby's brain and eye development. So read the label: if it says liver oil, or lists vitamin A or retinol in the nutrition panel, leave it on the shelf. If it lists only EPA and DHA, it is fine.
By trimester
Retinol does its damage during organ formation, so the first trimester is the highest-risk window for excess vitamin A. The advice to avoid fish liver oils holds throughout pregnancy, but stopping cod liver oil as soon as you know you are pregnant matters most.
Safer alternatives
- Omega-3 capsules labeled fish body oil, EPA and DHA only
- Algae-based DHA supplements
- A pregnancy multivitamin with beta-carotene instead of retinol
- Two portions of oily fish a week, such as salmon or sardines
- Walnuts and ground flaxseed for plant omega-3s
Sources
- NHS https://www.nhs.uk/pregnancy/keeping-well/foods-to-avoid/
- ACOG https://www.acog.org/womens-health/faqs/nutrition-during-pregnancy
Every verdict follows our sourcing methodology: official health guidelines only, most cautious position when they differ.
Last reviewed by the pregAI editorial team.
Frequently asked questions
How do I tell if my fish oil contains vitamin A?
Check the nutrition panel for vitamin A or retinol, and check the source on the front. Liver oils (cod, halibut, shark) carry retinol; oils pressed from the fish body list only EPA and DHA. If vitamin A appears anywhere on the label, switch products.
I took cod liver oil before I knew I was pregnant, is my baby at risk?
A short run at a standard dose is very unlikely to cause harm, since the concern is sustained high intake of retinol. Stop taking it now and move to a plain omega-3 or algal DHA supplement. Mention the dose and how long you took it at your next appointment.
Is beta-carotene a safer form of vitamin A in pregnancy?
Yes, beta-carotene from food and from pregnancy multivitamins is not linked to birth defects, because your body converts only what it needs. Carrots, sweet potato and spinach are all fine to eat freely. The restriction applies to preformed vitamin A, which is retinol.
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