Cod Liver Oil NZ: The Vitamin A and D Check Before You Add It to Your Omega Routine
You pick up a cod liver oil because you want omega-3. Then you turn the bottle around and spot vitamin A on the supplement panel. On another bottle, vitamin D is there too. Suddenly the question is not just which omega oil you want. It is what else that bottle is adding to everything you already take.
Cod liver oil can provide EPA and DHA while also contributing vitamin A and vitamin D, depending on the exact product. That combination can be useful, but it means you should check what else you already take before treating cod liver oil as just another omega bottle.
You came for omega-3, but that is not all you bought
Cod liver oil is a marine oil, so the omega-3 part is real. Depending on the product, you can get EPA and DHA alongside other omega-3 fats. But unlike a plain fish-oil formula, cod liver oil can also bring fat-soluble vitamins into the picture.
That is part of its appeal. If you want marine omega-3 plus vitamin A and vitamin D in one product, the combination can be very convenient. The key is to choose it for the whole nutrient profile, not just the words cod liver oil on the front.
If your main question is where cod liver oil sits beside other marine and algae omega options, our fish oil vs krill oil vs algae omega guide covers that broader choice. Here, we are staying focused on the vitamin A and D layer.
Cod liver oil brings more than omega-3
Vitamin A and vitamin D are fat-soluble nutrients. Their presence is one reason cod liver oil has a different shopping story from many standard fish oils.
The important detail is that the amounts can vary a lot between products. Some cod liver oils list vitamin A and vitamin D in modest amounts. Some add extra vitamin D3. Others may show vitamin A clearly while the current supplement panel does not give you a quantified vitamin D amount.
That means the product name alone cannot tell you whether a bottle fits neatly beside your multivitamin, direct vitamin D supplement or other combination products. The supplement panel can.
Two cod liver oil bottles can tell very different vitamin stories
Our Solgar Cod Liver Oil is a good example of why the back label matters. Each softgel currently provides 462 mg cod liver oil, 375 mcg vitamin A and 3.4 mcg vitamin D. The adult directions are one softgel daily, preferably at mealtime, or as directed by a healthcare practitioner. Its current precautions also say not to use it if you have liver disease.
Now look at Nordic Naturals Arctic-D Cod Liver Oil. Per teaspoon, the current Healthy panel lists 40 mcg vitamin A, 25 mcg or 1000 IU vitamin D3, 1060 mg total omega-3, including 340 mg EPA, 510 mg DHA and 210 mg other omega-3. This formula specifically has added vitamin D3. Its directions are one teaspoon daily with food, or as directed by a healthcare professional or pharmacist. Current precautions mention iodine allergy, blood thinners and anticipated surgery.
Those are both cod liver oil products, but the vitamin story is clearly different. Neither one is automatically better. One person may want the extra vitamin D3 in Arctic-D. Another may already take vitamin D separately and prefer a different fit.
There is another useful example in our range. Nordic Naturals Arctic Cod Liver Oil currently lists 40 mcg vitamin A and 1060 mg total omega-3 per teaspoon on the Healthy supplement panel, including 340 mg EPA, 510 mg DHA and 210 mg other omega-3. That current panel does not list a quantified vitamin D amount, so we would not guess one.
The simple point is worth repeating: the words cod liver oil do not tell you the whole nutrient profile.
The vitamin A question: what else is already contributing it?
Cod liver oil vitamin A deserves a quick look because it may not be your only source. A bottle can sit beside a multivitamin, a direct vitamin A supplement, an A + D product or another combination supplement.
Preformed vitamin A includes forms such as retinol and retinyl esters. It is different from beta-carotene, which is a provitamin A carotenoid. That distinction matters when you are reading several labels, especially if the exact vitamin A form is not obvious.
The Australia and New Zealand Nutrient Reference Values publish an upper level for preformed vitamin A. For adults aged 19 and over, including pregnancy, the listed upper level is 3000 mcg per day. That is a safety ceiling, not a daily target and not a number to work towards. Beta-carotene is treated separately.
We do not recommend trying to do speculative label maths when forms or amounts are unclear. If you have several products contributing vitamin A and you are not sure how they fit together, take the labels to a pharmacist or qualified health professional.
Then make the same check for vitamin D
The same idea applies to cod liver oil vitamin D. You may already take a vitamin D supplement, a multivitamin with vitamin D, another fish-oil formula containing vitamin D, or a prescribed vitamin D regimen.
This is where the live product examples are useful. Solgar Cod Liver Oil currently declares 3.4 mcg vitamin D per softgel. Arctic-D currently declares 25 mcg or 1000 IU vitamin D3 per teaspoon. We do not treat either amount as automatically better. They simply create different combinations once you consider what else is already in your cupboard.
If you take prescription vitamin D, do not change it to make room for cod liver oil. Check with your prescriber, pharmacist or another qualified health professional before adding a product that also contributes vitamin D.
Why we give cod liver oil its own shelf conversation
At Healthy, we do not treat cod liver oil as simply another fish-oil bottle. We look at the whole nutrient profile because that is what you are actually taking home.
Different cod liver oil supplements NZ customers can choose from may provide very different amounts of vitamin A and vitamin D, and some formulas specifically add vitamin D. Solgar currently gives you a softgel with declared vitamin A and vitamin D. Arctic-D combines marine omega-3 with added vitamin D3. Arctic Cod Liver Oil gives another example of why you need the exact current panel rather than assumptions based on the product name.
We like cod liver oil when its combination of omega-3, vitamin A and vitamin D actually fits what someone wants. We just do not treat those vitamins as free extras that can be ignored.
If that combination sounds right for you, you can browse our krill and cod liver oil collection and compare the current panels before choosing.
Pregnancy changes the answer
Cod liver oil pregnancy NZ advice needs a clear boundary. NZ pharmacy guidance advises avoiding fish liver oils such as cod liver oil during pregnancy because of their vitamin A content. We do not recommend cod liver oil as a prenatal omega source.
If you are pregnant or planning pregnancy, discuss your omega supplement with your midwife, pharmacist, GP or another qualified maternity health professional. Health NZ also has current guidance on nutrients, supplements and medicines in pregnancy, which is worth checking with your maternity care team.
Other reasons to check first
Product cautions are not identical, so the current label matters. It is sensible to get professional advice before choosing cod liver oil if you use blood-thinning medicines, are preparing for surgery, have liver disease or liver concerns, have fish or iodine allergies, take prescription vitamin D, use several overlapping supplements, or are choosing a product for a child.
For example, Solgar Cod Liver Oil currently says not to use it if you have liver disease. Nordic Naturals Arctic-D currently advises checking with a physician if you are allergic to iodine, use blood thinners or anticipate surgery. Those are product-specific precautions, not a reason to assume every cod liver oil has exactly the same warnings.
Supplements are best used as directed on the label. If medicines, pregnancy, allergies, liver concerns or a child's needs are involved, a pharmacist or qualified health professional can help you make the safer call.
When plain fish oil may be the simpler fit
If your main goal is EPA and DHA and you do not want additional vitamin A or vitamin D, a plain fish-oil formula may be easier to fit alongside your existing supplements.
We have separate guidance on how to choose fish oil supplements in NZ if you want to compare EPA and DHA labels without repeating that maths here.
Common questions about cod liver oil
What is cod liver oil?
Cod liver oil is an oil made from cod liver that can provide marine omega-3 fats including EPA and DHA. Depending on the exact product, it may also provide vitamin A and vitamin D.
Is cod liver oil the same as fish oil?
No. Both can provide marine omega-3, but cod liver oil may also contribute vitamin A and vitamin D. Plain fish oil is usually chosen primarily for its EPA and DHA content.
Does cod liver oil contain vitamin A and vitamin D?
Cod liver oil products may provide vitamin A and vitamin D, but the amounts vary between products. Some formulas also add vitamin D3, so check the current supplement panel rather than assuming every bottle is the same.
Can I take cod liver oil with a vitamin D supplement?
Sometimes, but it depends on how much vitamin D your cod liver oil provides and what else you take. If you use prescription vitamin D or are unsure about overlap, check with your pharmacist or qualified health professional before combining them.
Can I take cod liver oil with a multivitamin?
It may be possible, but first check whether your multivitamin already contains vitamin A or vitamin D. If the vitamin A forms or combined amounts are unclear, ask a pharmacist or qualified health professional rather than guessing.
Is cod liver oil safe during pregnancy?
NZ pharmacy guidance advises avoiding fish liver oils such as cod liver oil during pregnancy because of their vitamin A content. If you are pregnant or planning pregnancy, ask your midwife, pharmacist, GP or another qualified maternity health professional about an appropriate omega supplement.
What should I check on a cod liver oil label?
Check the serving size, EPA and DHA, vitamin A, vitamin D, directions and precautions. Then consider whether those vitamins overlap with your multivitamin, direct vitamin supplements or prescribed regimen.
When might plain fish oil be a simpler choice?
If you mainly want EPA and DHA and do not want extra vitamin A or vitamin D, a plain fish-oil formula may be simpler to combine with the supplements you already take.
Ready to compare cod liver oil options?
Cod liver oil can be a useful, convenient way to combine marine omega-3 with fat-soluble vitamins when that nutrient profile genuinely fits you. Start with the whole label, not just the omega claim, and choose the product whose vitamin A, vitamin D, directions and precautions make sense alongside what you already use.