Last update
5/26/2026
Reviewed By
Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Good
Based on 8 Reviews
8.1
Supplement Facts
Serving Size: 1 Softgel
Amount Per Serving
%DV
Calories
10
Total Fat
1.3 g
2%*
Polyunsaturated Fat
1 g
†
Monounsaturated Fat
<0.5 g
†
Evening Primrose Oil(Oenothera biennis) (Seed) (Cold-Pressed, Hexane-Free)
1.3 g (1,300 mg)
†
Gamma Linolenic Acid (GLA)
120 mg
†
Top Medical Research Studies
8
We examined how dietary supplements, specifically evening primrose oil (EPO), impact heart health in older rats under stress. Rats that received EPO showed a notable reduction in severe ventricular fibrillation compared to those fed sunflower seed oil without gamma-linolenic acid (GLA).
Interestingly, while borage oil, which contains more GLA, didn't provide any extra benefits, it indicates that GLA plays a crucial role. However, the findings primarily apply to aged rats, so further studies are necessary to determine the overall effectiveness in heart disease management in different populations.
Interestingly, while borage oil, which contains more GLA, didn't provide any extra benefits, it indicates that GLA plays a crucial role. However, the findings primarily apply to aged rats, so further studies are necessary to determine the overall effectiveness in heart disease management in different populations.
Read More
Most Useful Reviews
7.5
Reduced inflammation
2 people found this helpful
I’m drinking Primrose for the first time, and it has improved my cycle within a month. The benefits are substantial, and the quality is good. It reduces inflammation in the body and strengthens the heart, while also being beneficial for hair. The packaging is convenient, and I will order more.
Read More
7.5
Menopause relief
1 people found this helpful
I bought this to alleviate menopause symptoms, and I've already felt relief. My heart, which used to beat rapidly, is now calm. Thank you, iHerb, for providing quality products with reliable ingredients!
Read More
7.5
Regulates hormones
1 people found this helpful
This supplement is of high quality, featuring large capsules that help regulate hormones. It has no taste or smell, making it easy to consume. I trust this brand, knowing it benefits heart health and offers many other advantages.
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
- All Researches
8
We examined how dietary supplements, specifically evening primrose oil (EPO), impact heart health in older rats under stress. Rats that received EPO showed a notable reduction in severe ventricular fibrillation compared to those fed sunflower seed oil without gamma-linolenic acid (GLA).
Interestingly, while borage oil, which contains more GLA, didn't provide any extra benefits, it indicates that GLA plays a crucial role. However, the findings primarily apply to aged rats, so further studies are necessary to determine the overall effectiveness in heart disease management in different populations.
Interestingly, while borage oil, which contains more GLA, didn't provide any extra benefits, it indicates that GLA plays a crucial role. However, the findings primarily apply to aged rats, so further studies are necessary to determine the overall effectiveness in heart disease management in different populations.
Read More
User Reviews
USERS' SCORE
Good
Based on 8 Reviews
8.1
- All Reviews
- Positive Reviews
- Negative Reviews
7.5
Reduced inflammation
2 people found this helpful
I’m drinking Primrose for the first time, and it has improved my cycle within a month. The benefits are substantial, and the quality is good. It reduces inflammation in the body and strengthens the heart, while also being beneficial for hair. The packaging is convenient, and I will order more.
Read More
7.5
Menopause relief
1 people found this helpful
I bought this to alleviate menopause symptoms, and I've already felt relief. My heart, which used to beat rapidly, is now calm. Thank you, iHerb, for providing quality products with reliable ingredients!
Read More
7.5
Regulates hormones
1 people found this helpful
This supplement is of high quality, featuring large capsules that help regulate hormones. It has no taste or smell, making it easy to consume. I trust this brand, knowing it benefits heart health and offers many other advantages.
Read More
7.5
Good for heart
1 people found this helpful
I got this for my perimenopausal mother, but I take it too. It's great for heart health and has omega content. She dislikes fish taste, so this is perfect for her, and it benefits my hair as well.
Read More
7.5
Improves skin health
1 people found this helpful
This product is of great quality. My hair and skin look much better after use, and it also aids my heart health. I appreciate that there is no fish taste.
Read More
Frequently Asked Questions
8
We examined how dietary supplements, specifically evening primrose oil (EPO), impact heart health in older rats under stress. Rats that received EPO showed a notable reduction in severe ventricular fibrillation compared to those fed sunflower seed oil without gamma-linolenic acid (GLA).
Interestingly, while borage oil, which contains more GLA, didn't provide any extra benefits, it indicates that GLA plays a crucial role. However, the findings primarily apply to aged rats, so further studies are necessary to determine the overall effectiveness in heart disease management in different populations.
Interestingly, while borage oil, which contains more GLA, didn't provide any extra benefits, it indicates that GLA plays a crucial role. However, the findings primarily apply to aged rats, so further studies are necessary to determine the overall effectiveness in heart disease management in different populations.
References
- Charnock JS. Gamma-linolenic acid provides additional protection against ventricular fibrillation in aged rats fed linoleic acid rich diets. Prostaglandins Leukot Essent Fatty Acids. 2000;62:129. PubMed
