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Customer Ratings & Reviews

100% authenticOur products are sourced directly from brands or authorized distributors.Show more
4.6
Based on 655 ratings
484
114
38
12
7
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What customers say
Customers have mixed experiences with Natural Factors PS-IQ Memory Softgels. Many praise the product for its positive effects on memory, mental clarity, and focus. Users report improved concentration, reduced brain fog, and enhanced cognitive function. The softgels are easy to swallow, have no unpleasant smell or aftertaste, and come in high-quality packaging. Some customers appreciate the quick delivery and good price for a well-known brand. However, a few users did not notice significant improvements or had concerns about specific ingredients like evening primrose and tuna oil. Overall, while some find it highly effective and beneficial for cognitive health, others are still waiting to see results.
Review highlights
Customer reviews (653)
Product reviews solely reflect the views and opinions expressed by the contributors and not those of iHerb. iHerb does not verify or endorse any claims made in these reviews. Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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Rating

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Reviews from Taiwan
Reviewer Country
English
Translated reviews
chiahung
Posted on Jul 3, 2021
Taiwan
45
41
7
49
好的
Verified purchase
good
a92d0748-3fb2-4afd-886f-460f2ecab18e
iHerbCustomer
Posted on Dec 11, 2020
Taiwan
19
0
1
1
Verified purchase
good
goodxwolf
Gold
Posted on Feb 19, 2026
Canada
350
0
2
173
Essential for Stress Management
Verified purchase
An essential daily supplement that helps to control cortisol and rebalance stress response effectively. This one contains too many other things so I’ve switched to a pure PSP-only supplement since trying this out as well as one that is higher dose (100 mg x 2-3 / day) for accurate cortisol balance. I actually now get this low-PSP supplement for my dog who is reactive to neighborhood noise — it does the calming trick and then some! Highly recommend.
iHerb customer
Posted on Feb 2, 2026
Georgia
9
4
0
0
Helpful for focus and memory support
Verified purchase
I started using PS-IQ to support my memory and concentration, and I’m impressed with how it works. After consistent use, I noticed better mental clarity and improved focus, especially during busy days. I like that it contains phosphatidylserine along with supportive nutrients, and the formula feels clean and well-designed. The capsules are easy to swallow, and I didn’t experience any unpleasant side effects. Overall, this is a solid supplement for brain health, focus, and cognitive support. I would recommend it to anyone looking for gentle but effective mental performance support.
23702604-d079-40c6-b6ac-283d53d48787
KnowThyHealth
Silver
Posted on Mar 3, 2025
United States
170
0
0
9
Verified purchase
this product has really good ingredients for people who have stress
iHerb customer
Posted on Jan 24, 2025
Philippines
325
10
0
3
Good quality memory support
Verified purchase
The right use and ingredient of this supplement has the benefit and helps boost the body system and the brain. It is also an antioxodant and improves the memory. It has no after taste.
iHerb customer
Posted on Jan 3, 2025
Romania
66
0
2
84
Enhance Your Brain Power with Natural Factors PS-IQ Memory
Verified purchase
Since I started using Natural Factors PS-IQ Memory, I've noticed a significant improvement in my concentration and overall cognitive function. The combination of phosphatidylserine and essential fatty acids has truly made a difference, helping me stay focused and sharp throughout the day. I appreciate that it's made from high-quality ingredients and is free from artificial additives, making it a reliable choice for anyone seeking to boost their brain health.
iHerb customer
Posted on Jun 25, 2024
Israel
127
94
0
77
very nice supplement
Verified purchase
I'm happy with this purchase! this supplement has very healthy ingredients that help my mind and brain focus more. the quality and size are great and I see many benefits. there is no taste at all and the softgels are very small and very easy to swallow. I take it before I study and it helps me
4b5c233e-03fe-4967-ad87-06fd39dff27f
iHerb customer
Gold
Posted on Jul 15, 2025
United States
373
0
0
66
A good brain soft gel
Verified purchase
I was looking for a brain formula that’s both effective but also doesn’t break the bank. This one fits the bill. It has 50mg of phosphatidylserine plus a lot of other ingredients like primrose and etc. that fosters brain health cognition and memory factors. I usually get 100mgs of PS but 50 will still be effective if taken every day probably could take 2 a day. You get 60 soft gels so it will last a couple of months. The quality is good with this brand
JcatKZ
Posted on May 17, 2025
Kazakhstan
21
16
6
83
Great memory booster when learning
Verified purchase
I am caffeine sensitive, so I cannot consume many other brain supplements. This one is affordable caffeine-free brain nutritious supplement I have been coming back to regularly in the last 5 years. I am learning a new language and my memory is not as good as before. This product makes it easier to absorb and operate new information, helps to recall new information better. Totally recommend.