Last update
3/27/2026
Reviewed By
Overview
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
USERS' SCORE
Good
Based on 27 Reviews
8.8
Supplement Facts
Serving Size: Daily 1 Capsule
Amount Per Serving
%DV
Total Carbohydrate
<1 g
<1%*
Olive (Olea europaea) leaf extract
680 mg
†
Oleuropein
50 mg
†
Top Medical Research Studies
8
We investigated the anti-influenza effects of Isenolic, an olive leaf extract rich in elenolic acid. In a well-structured study, we compared Isenolic to the conventional flu treatment oseltamivir.
Our findings revealed that Isenolic showed promise as a natural alternative, particularly the 8% formulation, which offered robust inhibition of the virus and preserved cell health during infection.
While both treatments displayed activity against influenza, Isenolic emerged as a compelling option for future research and development in flu therapies.
Our findings revealed that Isenolic showed promise as a natural alternative, particularly the 8% formulation, which offered robust inhibition of the virus and preserved cell health during infection.
While both treatments displayed activity against influenza, Isenolic emerged as a compelling option for future research and development in flu therapies.
Read More
Most Useful Reviews
10
Stopped flu symptoms
23 people found this helpful
I can't speak highly enough of this little miracle pill! I've used it to prevent what seemed to be turning into a cold or flu. At the first signs of sore throat or body aches, I take three capsules three times a day until the symptoms vanish—usually after just three doses. My family has also benefited from it during cold symptoms. This is truly miraculous, and I recommend sticking to this effective brand!
Read More
10
Flu remedy success
18 people found this helpful
This was a lifesaver! Last year, my family suffered through a dreadful flu for six weeks. Finally, I remembered our chiropractor recommending olive leaf extract, so I tried it and we recovered within a week! We faced flu symptoms and hacking coughs that were going around, and this particular brand was highly praised, which is why I chose it. I now recommend it to others who’re struggling with colds, and it works without fail. A tip I learned: drink plenty of water to help flush out the toxins.
Read More
10
Prevents illness
11 people found this helpful
I've been using olive leaf extract for nearly a year upon a recommendation for fighting colds and flu before they start. Whenever I feel a cold approaching or am around sick people, I take it, and remarkably, I've avoided illness completely this year. It's the first time in my life that I haven’t caught any bugs circulating among my peers. It's an amazing product!
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 1 Research
8
- All Researches
8
We investigated the anti-influenza effects of Isenolic, an olive leaf extract rich in elenolic acid. In a well-structured study, we compared Isenolic to the conventional flu treatment oseltamivir.
Our findings revealed that Isenolic showed promise as a natural alternative, particularly the 8% formulation, which offered robust inhibition of the virus and preserved cell health during infection.
While both treatments displayed activity against influenza, Isenolic emerged as a compelling option for future research and development in flu therapies.
Our findings revealed that Isenolic showed promise as a natural alternative, particularly the 8% formulation, which offered robust inhibition of the virus and preserved cell health during infection.
While both treatments displayed activity against influenza, Isenolic emerged as a compelling option for future research and development in flu therapies.
Read More
User Reviews
USERS' SCORE
Good
Based on 27 Reviews
8.8
- All Reviews
- Positive Reviews
- Negative Reviews
10
Stopped flu symptoms
23 people found this helpful
I can't speak highly enough of this little miracle pill! I've used it to prevent what seemed to be turning into a cold or flu. At the first signs of sore throat or body aches, I take three capsules three times a day until the symptoms vanish—usually after just three doses. My family has also benefited from it during cold symptoms. This is truly miraculous, and I recommend sticking to this effective brand!
Read More
10
Flu remedy success
18 people found this helpful
This was a lifesaver! Last year, my family suffered through a dreadful flu for six weeks. Finally, I remembered our chiropractor recommending olive leaf extract, so I tried it and we recovered within a week! We faced flu symptoms and hacking coughs that were going around, and this particular brand was highly praised, which is why I chose it. I now recommend it to others who’re struggling with colds, and it works without fail. A tip I learned: drink plenty of water to help flush out the toxins.
Read More
10
Prevents illness
11 people found this helpful
I've been using olive leaf extract for nearly a year upon a recommendation for fighting colds and flu before they start. Whenever I feel a cold approaching or am around sick people, I take it, and remarkably, I've avoided illness completely this year. It's the first time in my life that I haven’t caught any bugs circulating among my peers. It's an amazing product!
Read More
9
Kicked the flu
7 people found this helpful
I caught the flu this spring quite severely. Olive leaf was the remedy that helped me overcome the persistent cough. This, along with raw garlic, provided me with major relief. While it may not be suitable for everyone, I found it to be an effective natural antibiotic in my recovery from flu.
Read More
9
Quick recovery
3 people found this helpful
I consume these on my naturopath's recommendation; they aided my swift recovery from COVID-19, and I now frequently utilise them for support against colds and flu.
Read More
Frequently Asked Questions
7.5
Quick recovery
Great! I have been taking this when I get a flu or cold; it helps me recover more quickly, and the manufacturer is excellent. I recommend it!
7.5
Prevents worsening
It stopped my flu from worsening! Very effective in alleviating my flu symptoms. I had to take double the recommended dose for a more significant effect.
9
Kicked the flu
7 people found this helpful
I caught the flu this spring quite severely. Olive leaf was the remedy that helped me overcome the persistent cough. This, along with raw garlic, provided me with major relief. While it may not be suitable for everyone, I found it to be an effective natural antibiotic in my recovery from flu.
10
Effective treatment
2 people found this helpful
Great for flu; olive leaf, lemon, elderberry, mullein, and plenty of rest helped me recover from the flu.
9
Healthy prevention
Taken at the first sign of a cold or flu, or as a preventive measure while travelling, Gaia's olive leaf keeps me healthy. The liquid-filled capsules are easy to consume and quickly absorbed by the body.
9
Cold prevention
1 people found this helpful
Life Saver! I have been on the verge of getting ill, and taking these daily has helped to keep the cold/flu at bay. Highly recommended!
References
- Salamanca A, Almodóvar P, Jarama I, González-Hedström D, Prodanov M, et al. Anti-influenza virus activity of the elenolic acid rich olive leaf ( L.) extract Isenolic. Antivir Chem Chemother. 2021;29:20402066211063391. 10.1177/20402066211063391
Data last updated:
