Page 1 - Reviews - Jarrow Formulas, PS100, 100 mg, 60 Softgels - iHerb
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Customer Ratings & Reviews

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4.7
Based on 5,889 ratings
4,920
604
264
58
43
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What customers say
Customers have reported significant improvements in cognitive function, memory, and focus after using Jarrow Formulas' PS100. Many users appreciate the easy-to-swallow softgel format and the high quality of the product. Some have noticed better sleep and reduced cortisol levels when taking it in the evening. The supplement is praised for its effectiveness in enhancing mental clarity and managing stress. However, a few users experienced adverse effects such as headaches or kidney pain. Overall, Jarrow Formulas' PS100 is highly recommended for its positive impact on brain health and cognitive performance.
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Riz
Posted on Jul 1, 2025
Canada
76
0
2
13
nice
Verified purchase
I used this product for cortisol regulation and content with quality and ingredients. The price is affordable and has no garbage fillers. The bottle size is good and securely packaged.
iHerb customer
Posted on Nov 9, 2025
Canada
38
7
6
20
Does the job
Verified purchase
Bought this for health support for my family. It’s a pretty small quantity for the price, but for the purpose of health, we pay the price. iHerb products tend to be fresh, so that’s why we ordered it here. We keep it in the fridge especially during hotter months, same thing for omega-3. No weird taste.
BlackNova
Gold
Posted on Oct 27, 2025
Thailand
508
0
4
101
Verified purchase
Jarrow Formulas PS100 is a high-quality supplement that delivers phosphatidylserine in a reliable and well-formulated capsule. The ingredients are clean and focused, featuring 100 mg of phosphatidylserine per serving derived from sunflower lecithin, with no unnecessary fillers or artificial additives. The capsule size is small and easy to swallow, making daily use convenient. Overall, it offers excellent quality and consistent potency in a compact, user-friendly package.
iHerbCustomer
Posted on Oct 18, 2024
Philippines
2,107
0
0
51
Verified purchase
Thank you for providing such outstanding supplements! The quality is exceptional, with thoughtfully selected ingredients that offer remarkable health benefits. Your products have made a significant positive impact on my overall well-being. I also appreciate the secure and reliable packaging. Thanks again, iHerb!
Elka
Silver
Posted on Sep 25, 2025
Ukraine
155
0
0
40
Verified purchase
Helps me control my higher thrombocyte count in check. Apparently PS100 marks them for removal. My T count has been slightly elevated for years, with no objective reasons for it other than potential development of essential thrombocythemia (ET). I had an increased number of immature granulocytes (IG), which is not considered a solid marker of ET, yet it's not normal for them to be elevated. So PS100 normalized my IG count in the blood. With each subsequent test they disappeared. Hard to say what is going on, but I take it as a good sign and that it helps me stray away from the potential blood disease I was heading towards.
organicguy
Silver
Posted on Jul 26, 2025
Brazil
147
0
1
16
Verified purchase
Phosphatidylserine is a must-have for those coping with stress and sleep issues ( take it at night).
iHerb customer
Gold
Posted on Oct 13, 2025
Singapore
1,765
0
0
70
Verified purchase
I started taking this to help manage my stress levels, and it has made a noticeable difference in my ability to stay calm under pressure. My mind feels less cluttered, and I'm sleeping more soundly through the night. The softgels are small and easy to swallow with my other daily supplements. It's become an essential part of my routine for maintaining mental clarity and a sense of calm.
iHerbCustomer
Gold
Posted on Oct 3, 2025
Singapore
862
0
0
112
Nice
Verified purchase
Jarrow PS100 is a solid cognitive-support product. Great for someone who wants to support memory, focus, or mental stamina without strong stimulants. Especially useful during busy work periods, times with high mental load or stress. Good packaging and size. Best used with consistency (daily or near-daily), and paired with good sleep, diet, maybe other supportive nutrients (omega-3s, etc.). If you’re soy-sensitive, the clumping issues bother you, or you want faster-acting effects, you might look around at alternatives (especially sunflower-lecithin PS versions). Effect is gradual: It’s not an “instant brain boost” kind of product. Benefits (better memory, sharper thinking, less fog) show up only after consistent use. Taste is ok.
iHerbCustomer
Gold
Posted on Aug 29, 2025
Philippines
400
3
12
96
Soy‑Free PS That Sharpens Focus and Mental Stamina
Verified purchase
I’ve been taking Jarrow PS100 (Sharp‑PS Green) and I’m impressed. The sunflower‑derived phosphatidylserine is soy‑free, gluten free, and very gentle on my stomach. The softgels are small and easy to swallow, and the flexible dosing (1–3 daily with meals) lets me tailor for busy days. After about two weeks, I noticed clearer focus, smoother recall, and steadier mental energy through long work sessions—without jitters or a crash. Packaging is sturdy, labeling is clear, and quality feels consistent from a brand I trust. For straightforward cognitive support and brain health maintenance, this PS100 delivers real, noticeable benefits and fits effortlessly into my routine.
iHerb customer
Gold
Posted on Aug 26, 2025
Philippines
389
0
0
97
Sharp-PS Green PS100 for Focus and Brain Health
Verified purchase
Jarrow Formulas PS100 with Sharp-PS® provides a clean, soy-free phosphatidylserine option for cognitive support. The sunflower lecithin source offers stable, concentrated PS to help maintain brain cell membranes and overall brain health. Easy dosing—1 softgel 1–3 times daily with meals—fits into a daily routine. Gluten-free and designed for adults seeking support for memory, focus, and cognitive function. A reliable, well-formulated supplement for sustaining brain health.