Overview

SCIENTIFIC SCORE
Possibly Effective
Based on 46 Researches
7.8
USERS' SCORE
Good
Based on 2 Reviews
8.5
Supplement Facts
Serving Size:  1 Soft Gel
Amount Per Serving
%DV
Calories 
5
 
Total Fat
0.5 g
1%**
Cholesterol 
<5mg
<2%
Vitamin A (from cod live oil and retinyl palmitate)
27 mcg RAE
3%
Vitamin D (as cholecalciferol) (from cod liver oil and cholecalciferol concentrate)
100 mcg (4,000 IU)
500%
Vitamin E (as d-alpha tocopherol)
0.67 mg
4%
Norwegian Cod Liver Oil 
500 mg
Total Omega-3 fatty Acids☆
115 mg
DHA (Docosahexaenoic Acid)☆
50 mg
EPA (Eicosapentaenoic Acid)☆
42 mg

Top Medical Research Studies

We explored the effects of vitamin D supplementation in patients with liver cirrhosis—a progressive disease that often manifests alongside vitamin D deficiency. In a carefully designed study, we involved sixty patients who participated in a double-blind, randomized controlled trial. Each patient received either a weekly dose of 50,000 IU of vitamin D or a placebo over 12 weeks.

Throughout the study, we assessed key health markers before and after supplementation, including liver function tests, lipid profiles, and glycaemic indices such as fasting blood glucose and insulin resistance. By the end of the trial, our findings indicated that vitamin D supplementation significantly improved fasting blood glucose levels and insulin resistance in the participants.

Specifically, we observed noteworthy increases in serum 25-hydroxy-vitamin D levels and reductions in fasting blood glucose and insulin resistance indicators. These results suggest that vitamin D might be an important player in improving metabolic health for those suffering from liver cirrhosis.
Read More
9
Vitamin D improves fatty liver health
We explored the impact of vitamin D on metabolic associated fatty liver disease (MAFLD) by examining both animal and cell models. Our study involved male C57BL/6J mice, which were put on a high-fat diet and then treated with vitamin D for 16 weeks. At the same time, we analyzed liver cells that were exposed to palmitic acid to mimic fatty liver conditions.

Our findings revealed that vitamin D not only helped reduce body weight and improve liver health, but it also played a role in restoring normal metabolic functions. By reducing inflammation and protecting liver cells from damage, vitamin D enhanced insulin sensitivity and affected fat metabolism positively.

Notably, we found that vitamin D helped inhibit a harmful process known as ferroptosis—a type of cell death linked to liver injury. Through various assays, we confirmed that vitamin D treatment boosted the liver's antioxidant capabilities and lessened iron buildup in liver cells. Overall, our research suggests that vitamin D could be a promising therapeutic option for individuals suffering from MAFLD.
Read More
9.5
Vitamin D receptor targeting reduces fibrosis
We designed and synthesized a series of 37 non-steroidal compounds aimed at activating the vitamin D receptor (VDR) to explore their potential in treating liver fibrosis. This condition involves an unhealthy buildup of fibrous tissue in the liver, often leading to serious complications.

Our research found that more than a third of these novel compounds displayed strong affinity for VDR and showed the ability to activate it. Among these, one compound, E15, stood out as particularly effective. It significantly inhibited the activation of hepatic stellate cells (HSCs), which play a critical role in the progression of liver fibrosis, thereby reducing the production of harmful extracellular matrix components.

Encouraged by these promising in vitro results, we proceeded to test E15 in a mouse model of liver fibrosis induced by carbon tetrachloride. The results were remarkable; E15 not only decreased fibrosis and collagen deposition, but also improved liver function without the negative side effect of hypercalcemia, which is often associated with traditional VDR agonists.

These findings suggest that E15 could be a powerful and safer alternative for addressing liver fibrosis, highlighting the significant therapeutic potential of targeting the vitamin D receptor in liver diseases.
Read More

Most Useful Reviews

9
Improved strength
9 people found this helpful
Excellent. My wife has advanced liver disease, but the products I ordered from iherb.com, recommended by Dr Antti Heikkilä, have greatly improved her condition and strength. She now believes she may have more time to live. In November 2010, her oncologist predicted she had just two months left. Thanks to Dr Heikkilä's advice, we have found hope and support through these products. Thank you, iherb.com, and a heartfelt thanks to Dr Heikkilä for extending her time with us.
Read More
6
Joint pain relief
I liked it. I take one capsule daily, which lasts a year. It contains vitamins A, D3, and cod liver oil, beneficial for my joints. My bone pain has significantly lessened due to my profession's demands. I highly recommend this; you won’t regret it.
Read More

Medical Researches

SCIENTIFIC SCORE
Possibly Effective
Based on 46 Researches
7.8
  • All Researches
9.5
Vitamin D receptor targeting reduces fibrosis
We designed and synthesized a series of 37 non-steroidal compounds aimed at activating the vitamin D receptor (VDR) to explore their potential in treating liver fibrosis. This condition involves an unhealthy buildup of fibrous tissue in the liver, often leading to serious complications.

Our research found that more than a third of these novel compounds displayed strong affinity for VDR and showed the ability to activate it. Among these, one compound, E15, stood out as particularly effective. It significantly inhibited the activation of hepatic stellate cells (HSCs), which play a critical role in the progression of liver fibrosis, thereby reducing the production of harmful extracellular matrix components.

Encouraged by these promising in vitro results, we proceeded to test E15 in a mouse model of liver fibrosis induced by carbon tetrachloride. The results were remarkable; E15 not only decreased fibrosis and collagen deposition, but also improved liver function without the negative side effect of hypercalcemia, which is often associated with traditional VDR agonists.

These findings suggest that E15 could be a powerful and safer alternative for addressing liver fibrosis, highlighting the significant therapeutic potential of targeting the vitamin D receptor in liver diseases.
Read More
We set out to understand how vitamin D might influence liver disease, particularly non-alcoholic fatty liver disease (NAFLD) related to obesity. For our research, we used a high-fat diet to create a mouse model that mimics the condition. We then supplemented these mice with vitamin D via injections over several weeks to see if it could alleviate the liver issues associated with their diet.

Our findings revealed that a high-fat diet led to vitamin D deficiency, insulin resistance, and a notable increase in liver weight. This also resulted in elevated liver enzymes and triglyceride levels, contributing to steatohepatitis, a concerning liver condition. When we introduced vitamin D supplementation, we observed a significant recovery in liver weight and overall improvement in liver health. The treatment also lowered harmful enzymes and triglycerides while helping control markers related to inflammation and fibrosis.

This study highlights that vitamin D supplementation can positively impact liver health in cases linked to obesity, offering an accessible and potentially effective strategy for addressing NAFLD. Notably, we found no adverse effects from the vitamin D treatment, suggesting it could be a safe option for individuals at risk.
Read More
We explored the effects of vitamin D supplementation in patients with liver cirrhosis—a progressive disease that often manifests alongside vitamin D deficiency. In a carefully designed study, we involved sixty patients who participated in a double-blind, randomized controlled trial. Each patient received either a weekly dose of 50,000 IU of vitamin D or a placebo over 12 weeks.

Throughout the study, we assessed key health markers before and after supplementation, including liver function tests, lipid profiles, and glycaemic indices such as fasting blood glucose and insulin resistance. By the end of the trial, our findings indicated that vitamin D supplementation significantly improved fasting blood glucose levels and insulin resistance in the participants.

Specifically, we observed noteworthy increases in serum 25-hydroxy-vitamin D levels and reductions in fasting blood glucose and insulin resistance indicators. These results suggest that vitamin D might be an important player in improving metabolic health for those suffering from liver cirrhosis.
Read More
9
Vitamin D protects bile duct cells
We explored the relationship between vitamin D and bile duct health, particularly focusing on biliary atresia (BA), a condition that leads to bile duct obstruction in children. Our research centered on vitamin D's receptor (VDR) and its role in protecting bile duct epithelial cells from damage caused by viruses, specifically double-stranded RNA viruses.

Through a combination of laboratory and animal studies, we assessed the expression of VDR in bile duct cells from pediatric patients, noting its connection to cholangitis rates after treatment. We discovered that activating VDR with vitamin D3 significantly reduced cell damage and apoptosis, which is the process of programmed cell death that can worsen BA.

We found that vitamin D3 helped mitigate viral-induced inflammation and cell death through specific cellular pathways, including one called the PLA2/PKC/ERK pathway. This suggests that vitamin D could be a valuable therapeutic option in managing liver diseases like BA, potentially offering new avenues for treatment and patient care.
Read More
9
Vitamin D improves fatty liver health
We explored the impact of vitamin D on metabolic associated fatty liver disease (MAFLD) by examining both animal and cell models. Our study involved male C57BL/6J mice, which were put on a high-fat diet and then treated with vitamin D for 16 weeks. At the same time, we analyzed liver cells that were exposed to palmitic acid to mimic fatty liver conditions.

Our findings revealed that vitamin D not only helped reduce body weight and improve liver health, but it also played a role in restoring normal metabolic functions. By reducing inflammation and protecting liver cells from damage, vitamin D enhanced insulin sensitivity and affected fat metabolism positively.

Notably, we found that vitamin D helped inhibit a harmful process known as ferroptosis—a type of cell death linked to liver injury. Through various assays, we confirmed that vitamin D treatment boosted the liver's antioxidant capabilities and lessened iron buildup in liver cells. Overall, our research suggests that vitamin D could be a promising therapeutic option for individuals suffering from MAFLD.
Read More

User Reviews

USERS' SCORE
Good
Based on 2 Reviews
8.5
  • All Reviews
  • Positive Reviews
  • Negative Reviews
9
Improved strength
9 people found this helpful
Excellent. My wife has advanced liver disease, but the products I ordered from iherb.com, recommended by Dr Antti Heikkilä, have greatly improved her condition and strength. She now believes she may have more time to live. In November 2010, her oncologist predicted she had just two months left. Thanks to Dr Heikkilä's advice, we have found hope and support through these products. Thank you, iherb.com, and a heartfelt thanks to Dr Heikkilä for extending her time with us.
Read More
6
Joint pain relief
I liked it. I take one capsule daily, which lasts a year. It contains vitamins A, D3, and cod liver oil, beneficial for my joints. My bone pain has significantly lessened due to my profession's demands. I highly recommend this; you won’t regret it.
Read More

Frequently Asked Questions

No FAQs are available for this product and symptom.

References

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  2. Derogar Kasmaei SR, Parastouei K, Hosseini Ahangar B, Saberifiroozi M, Taghdir M. Effects of vitamin D supplementation on the glycaemic indices, lipid profile and liver function tests in patients with cirrhosis: a double-blind randomised controlled trial. BMJ Nutr Prev Health. 2024;7:e000938. 10.1136/bmjnph-2024-000938
  3. Liu N, Zhao P, Cao P, Hui J, Pan Y, et al. Vitamin D3/VDR alleviates double-stranded RNA virus -induced biliary epithelial cell damage by inhibiting autophagy. BMC Gastroenterol. 2025;25:44. 10.1186/s12876-025-03640-5
  4. Zou C, Liu X, He M, Sun Y, Sang Y, et al. Insulin Resistance Mediates the Association Between Vitamin D and Non-Alcoholic Fatty Liver Disease. Int J Prev Med. 2024;15:77. 10.4103/ijpvm.ijpvm_221_23
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  40. Iizasa S, Nagao K, Tsuge K, Nagano Y, Yanagita T. Identification of genes regulated by lipids from seaweed Susabinori (Pyropia yezoensis) involved in the improvement of hepatic steatosis: Insights from RNA-Seq analysis in obese db/db mice. PLoS One. 2023;18:e0295591. 10.1371/journal.pone.0295591
  41. Hull MA, Ow PL, Ruddock S, Brend T, Smith AF, et al. Randomised, placebo-controlled, phase 3 trial of the effect of the omega-3 polyunsaturated fatty acid eicosapentaenoic acid (EPA) on colorectal cancer recurrence and survival after surgery for resectable liver metastases: EPA for Metastasis Trial 2 (EMT2) study protocol. BMJ Open. 2023;13:e077427. 10.1136/bmjopen-2023-077427
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  43. Chen YF, Fan ZK, Gao X, Zhou F, Guo XF, et al. n-3 polyunsaturated fatty acids in phospholipid or triacylglycerol form attenuate nonalcoholic fatty liver disease via mediating cannabinoid receptor 1/adiponectin/ceramide pathway. J Nutr Biochem. 2024;123:109484. 10.1016/j.jnutbio.2023.109484
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  45. Rohwer N, Jelleschitz J, Höhn A, Weber D, Kühl AA, et al. Prevention of colitis-induced liver oxidative stress and inflammation in a transgenic mouse model with increased omega-3 polyunsaturated fatty acids. Redox Biol. 2023;64:102803. 10.1016/j.redox.2023.102803
  46. Roque-Jiménez JA, Oviedo-Ojeda MF, Whalin M, Lee-Rangel HA, Relling AE. Ewe early gestation supplementation with eicosapentaenoic and docosahexaenoic acids affects the liver, muscle, and adipose tissue fatty acid profile and liver mRNA expression in the offspring. J Anim Sci. 2023;101. 10.1093/jas/skad144
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