Last update
3/22/2026
Reviewed By
Overview
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Moderately Good
Based on 77 Reviews
7.6
Supplement Facts
Serving Size: 1 Softgel
Amount Per Serving
%DV
Phosphatidylserine (PS) from Lecithin (Sunflower) (Helianthus annuus) Seed Oil
100 mg
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Most Useful Reviews
9
Highly recommended
42 people found this helpful
Jarrow PS-100 was recommended to me years ago by a friend with a PhD in biochemistry who owns a vitamin store. It works wonders for brain function.
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7.5
Clearer thoughts
20 people found this helpful
I often made mistakes at work, struggled with interpersonal relationships, and had a dull mind, but after using various supplements without clear effects, I tried phosphatidylserine. I took one tablet in the morning and noon, and soon my head felt clearer with organized thoughts. I can now handle social troubles better, and I believe the mental stress damage has lessened. My concentration has increased significantly at work and school, prompting me to order double the amount.
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9
Support for cognition
16 people found this helpful
After years of stress, my cognitive functions declined significantly, resembling early Alzheimer's. I didn’t expect much from the initial 100 mg dose, yet the effect was remarkably tangible, providing excellent support for my brain power. This supplement suits those with genuine cognitive issues. For others, nootropics from regular pharmacies may be a better, economical choice. I plan to increase my dosage with my next order, without any noticeable stimulating effects, making it suitable even for evening use.
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User Reviews
USERS' SCORE
Moderately Good
Based on 77 Reviews
7.6
- All Reviews
- Positive Reviews
- Negative Reviews
9
Highly recommended
42 people found this helpful
Jarrow PS-100 was recommended to me years ago by a friend with a PhD in biochemistry who owns a vitamin store. It works wonders for brain function.
Read More
7.5
Clearer thoughts
20 people found this helpful
I often made mistakes at work, struggled with interpersonal relationships, and had a dull mind, but after using various supplements without clear effects, I tried phosphatidylserine. I took one tablet in the morning and noon, and soon my head felt clearer with organized thoughts. I can now handle social troubles better, and I believe the mental stress damage has lessened. My concentration has increased significantly at work and school, prompting me to order double the amount.
Read More
9
Support for cognition
16 people found this helpful
After years of stress, my cognitive functions declined significantly, resembling early Alzheimer's. I didn’t expect much from the initial 100 mg dose, yet the effect was remarkably tangible, providing excellent support for my brain power. This supplement suits those with genuine cognitive issues. For others, nootropics from regular pharmacies may be a better, economical choice. I plan to increase my dosage with my next order, without any noticeable stimulating effects, making it suitable even for evening use.
Read More
9
Focus during studies
9 people found this helpful
Honest review! This works; I took 1-2 pills in the morning and one in the afternoon. It helped me concentrate, especially during study sessions with brain blockages. By evening, I fell asleep easily and woke up feeling refreshed. I experienced no side effects, which aligns with other reviews I read.
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9
Instant improvement
8 people found this helpful
Perfectly! The result is immediate! As my body is very sensitive, I can feel the effects of most supplements straight away, including this one. I chose this phospholipid for cardiovascular issues, and it instantly lifts my mood and boosts brain activity. Overall, my condition is more comfortable. The supplement definitely works without side effects. If it's even a little helpful, don’t hesitate to like it!
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Frequently Asked Questions
6
Cortisol reduction
38 people found this helpful
This is an effective supplement. After taking one capsule daily for a month, I noticed that my mind felt clearer and I could easily absorb and recall information. Most importantly, my cortisol levels, which were elevated, returned to normal.
6
Gradual improvement
62 people found this helpful
I view this as a softer alternative to alpha GPC. The effects are mild and not immediately noticeable, but I’ve observed gradual improvement in my brain function.
0
No improvement observed
2 people found this helpful
Useless! I took it to enhance brain function, but I noticed no effect whatsoever. It appears to be completely ineffective.
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