' 
SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
USERS' SCORE
Good
Based on 6 Reviews
8.7
Supplement Facts
Serving Size: 1 Capsule
Amount Per Serving
%DV
L-Carnitine (as L-Carnitine Tartrate)
500 mg
†
Top Medical Research Studies
9
L-carnitine reduces CFS fatigue
Association between fatigue, peripheral serotonin, and L-carnitine in hypothyroidism and in chronic fatigue syndrome.
Partially examines overlapping conditions
We aimed to explore how L-carnitine supplementation affects individuals suffering from chronic fatigue syndrome (CFS) by analyzing their serotonin levels and fatigue symptoms. Our study focused on a group of 12 individuals with CFS and compared their serotonin and fatigue levels before and after 7 weeks of L-carnitine treatment.
Remarkably, we observed that after the supplementation, serotonin levels in those with CFS increased drastically—by eight times! Alongside this boost in serotonin, participants reported a significant two-fold reduction in fatigue symptoms, which was noteworthy given the persistent fatigue commonly experienced in CFS.
These findings also revealed a strong negative correlation between serotonin levels and fatigue, suggesting that higher serotonin is associated with lower fatigue levels. This paints a promising picture of L-carnitine as a potential treatment for managing fatigue in CFS, contributing to a better quality of life for those affected.
Remarkably, we observed that after the supplementation, serotonin levels in those with CFS increased drastically—by eight times! Alongside this boost in serotonin, participants reported a significant two-fold reduction in fatigue symptoms, which was noteworthy given the persistent fatigue commonly experienced in CFS.
These findings also revealed a strong negative correlation between serotonin levels and fatigue, suggesting that higher serotonin is associated with lower fatigue levels. This paints a promising picture of L-carnitine as a potential treatment for managing fatigue in CFS, contributing to a better quality of life for those affected.
Read More
7
L-carnitine shows mixed effects
Dietary Supplementation for Fatigue Symptoms in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS)-A Systematic Review.
Focus on combined treatments
We set out to explore how l-carnitine, a common dietary supplement, affects individuals suffering from chronic fatigue syndrome (CFS). By conducting a systematic review of fourteen studies involving 809 participants, we aimed to gather reliable evidence about the effectiveness of l-carnitine in alleviating fatigue, one of the primary symptoms of this complex disorder.
Many patients turn to dietary supplements like l-carnitine to find relief from their fatigue and its accompanying symptoms. Our review found that while some studies reported a significant reduction in fatigue from interventions that included l-carnitine, we also noticed methodological challenges that limit these findings. Issues such as small sample sizes and missing data led to a high risk of bias, which makes it hard to draw clear conclusions about the supplement's effectiveness on its own.
Additionally, our review highlighted mixed results when it came to secondary outcomes, such as cognitive function and biomarkers of inflammation. Some participants did report adverse effects, like nausea and insomnia, which adds another layer of complexity in assessing the use of l-carnitine for CFS. Overall, while l-carnitine shows potential benefits for reducing fatigue, the limitations of the current studies make us cautious about confirming its isolated effectiveness.
Many patients turn to dietary supplements like l-carnitine to find relief from their fatigue and its accompanying symptoms. Our review found that while some studies reported a significant reduction in fatigue from interventions that included l-carnitine, we also noticed methodological challenges that limit these findings. Issues such as small sample sizes and missing data led to a high risk of bias, which makes it hard to draw clear conclusions about the supplement's effectiveness on its own.
Additionally, our review highlighted mixed results when it came to secondary outcomes, such as cognitive function and biomarkers of inflammation. Some participants did report adverse effects, like nausea and insomnia, which adds another layer of complexity in assessing the use of l-carnitine for CFS. Overall, while l-carnitine shows potential benefits for reducing fatigue, the limitations of the current studies make us cautious about confirming its isolated effectiveness.
Read More
Most Useful Reviews
9.5
Increased energy levels
This works! I put my wife on this for energy and weight loss. She has seen a noticeable increase in energy and has lost 5 lbs in 2 weeks without exercise, which is impressive as she does not lose weight easily. My daughter, aged 18, was extremely fatigued and experienced racing heart multiple times daily. Since taking this product, her energy has improved, and her instances of a lowered heart rate have diminished. P.S. Don't take it late at night, as it may keep you awake.
Read More
7.8
Enhanced energy levels
My experience with L-Carnitine has been positive. I've noticed a clear improvement in my energy levels and focus, particularly after long workdays. Since including L-Carnitine in my routine, I've felt more energised and have improved my endurance during workouts. I can push myself harder without feeling as fatigued. Overall, I am very satisfied with its effects on my health regimen.
Read More
8.8
Improved endurance significantly
I've been taking L-Carnitine from Jarrow Formulas for a few weeks, and the results are remarkable. It has significantly increased my endurance during training, making cardio easier. I also feel a light energy boost without excessive excitement. It aids in fat burning, especially when combined with regular workouts and a healthy diet. This product is high quality, pleasant to take, and an excellent investment for anyone trying to enhance their fitness.
Read More
Medical Researches
SCIENTIFIC SCORE
Moderately Effective
Based on 2 Researches
8
- All Researches
9
L-carnitine reduces CFS fatigue
Association between fatigue, peripheral serotonin, and L-carnitine in hypothyroidism and in chronic fatigue syndrome.
Partially examines overlapping conditions
We aimed to explore how L-carnitine supplementation affects individuals suffering from chronic fatigue syndrome (CFS) by analyzing their serotonin levels and fatigue symptoms. Our study focused on a group of 12 individuals with CFS and compared their serotonin and fatigue levels before and after 7 weeks of L-carnitine treatment.
Remarkably, we observed that after the supplementation, serotonin levels in those with CFS increased drastically—by eight times! Alongside this boost in serotonin, participants reported a significant two-fold reduction in fatigue symptoms, which was noteworthy given the persistent fatigue commonly experienced in CFS.
These findings also revealed a strong negative correlation between serotonin levels and fatigue, suggesting that higher serotonin is associated with lower fatigue levels. This paints a promising picture of L-carnitine as a potential treatment for managing fatigue in CFS, contributing to a better quality of life for those affected.
Remarkably, we observed that after the supplementation, serotonin levels in those with CFS increased drastically—by eight times! Alongside this boost in serotonin, participants reported a significant two-fold reduction in fatigue symptoms, which was noteworthy given the persistent fatigue commonly experienced in CFS.
These findings also revealed a strong negative correlation between serotonin levels and fatigue, suggesting that higher serotonin is associated with lower fatigue levels. This paints a promising picture of L-carnitine as a potential treatment for managing fatigue in CFS, contributing to a better quality of life for those affected.
Read More
7
L-carnitine shows mixed effects
Dietary Supplementation for Fatigue Symptoms in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS)-A Systematic Review.
Focus on combined treatments
We set out to explore how l-carnitine, a common dietary supplement, affects individuals suffering from chronic fatigue syndrome (CFS). By conducting a systematic review of fourteen studies involving 809 participants, we aimed to gather reliable evidence about the effectiveness of l-carnitine in alleviating fatigue, one of the primary symptoms of this complex disorder.
Many patients turn to dietary supplements like l-carnitine to find relief from their fatigue and its accompanying symptoms. Our review found that while some studies reported a significant reduction in fatigue from interventions that included l-carnitine, we also noticed methodological challenges that limit these findings. Issues such as small sample sizes and missing data led to a high risk of bias, which makes it hard to draw clear conclusions about the supplement's effectiveness on its own.
Additionally, our review highlighted mixed results when it came to secondary outcomes, such as cognitive function and biomarkers of inflammation. Some participants did report adverse effects, like nausea and insomnia, which adds another layer of complexity in assessing the use of l-carnitine for CFS. Overall, while l-carnitine shows potential benefits for reducing fatigue, the limitations of the current studies make us cautious about confirming its isolated effectiveness.
Many patients turn to dietary supplements like l-carnitine to find relief from their fatigue and its accompanying symptoms. Our review found that while some studies reported a significant reduction in fatigue from interventions that included l-carnitine, we also noticed methodological challenges that limit these findings. Issues such as small sample sizes and missing data led to a high risk of bias, which makes it hard to draw clear conclusions about the supplement's effectiveness on its own.
Additionally, our review highlighted mixed results when it came to secondary outcomes, such as cognitive function and biomarkers of inflammation. Some participants did report adverse effects, like nausea and insomnia, which adds another layer of complexity in assessing the use of l-carnitine for CFS. Overall, while l-carnitine shows potential benefits for reducing fatigue, the limitations of the current studies make us cautious about confirming its isolated effectiveness.
Read More
User Reviews
USERS' SCORE
Good
Based on 6 Reviews
8.7
- All Reviews
- Positive Reviews
- Negative Reviews
9.5
Increased energy levels
This works! I put my wife on this for energy and weight loss. She has seen a noticeable increase in energy and has lost 5 lbs in 2 weeks without exercise, which is impressive as she does not lose weight easily. My daughter, aged 18, was extremely fatigued and experienced racing heart multiple times daily. Since taking this product, her energy has improved, and her instances of a lowered heart rate have diminished. P.S. Don't take it late at night, as it may keep you awake.
Read More
7.8
Enhanced energy levels
My experience with L-Carnitine has been positive. I've noticed a clear improvement in my energy levels and focus, particularly after long workdays. Since including L-Carnitine in my routine, I've felt more energised and have improved my endurance during workouts. I can push myself harder without feeling as fatigued. Overall, I am very satisfied with its effects on my health regimen.
Read More
8.8
Improved endurance significantly
I've been taking L-Carnitine from Jarrow Formulas for a few weeks, and the results are remarkable. It has significantly increased my endurance during training, making cardio easier. I also feel a light energy boost without excessive excitement. It aids in fat burning, especially when combined with regular workouts and a healthy diet. This product is high quality, pleasant to take, and an excellent investment for anyone trying to enhance their fitness.
Read More
8.8
Significant improvement noted
This supplement is incredibly valuable for those experiencing fatigue and muscle weakness. Its key role is to create carnitine, which helps transport fatty acids into mitochondria for energy. I absolutely love this product; I've noticed an improvement within just a few days of use.
Read More
8.5
Helped post-Covid fatigue
I found good quality L-Carnitine helpful for battling fatigue after Covid; it worked effectively. It’s also beneficial for stamina during workouts and muscle building.
