Customer Ratings & Reviews

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4.7

Based on 237 ratings

190

What customers say

Customers have mixed experiences with this phosphatidylserine (PS) supplement. Many appreciate its effectiveness in reducing stress and improving mental clarity, alertness, and memory. Some users noted a calming effect and better brain function, particularly during stressful times. The product's inclusion of multiple forms of phospholipids is praised for enhancing its benefits. However, there are concerns about the use of soybean oil and gelatin capsules. A few customers experienced drowsiness or no noticeable effects after short-term use. Overall, the supplement is considered high-quality and beneficial by many, though some prefer alternatives without soy.

Review highlights

(235)

iHerb customer

Posted on Sep 30, 2021

Philippines

Verified purchase

NICE PACKAGE!!! NO DAMAGE AND CHEAP

TinVal

Silver

Posted on Jan 21, 2026

Bulgaria

271

3,057

Will buy more!

Verified purchase

Top quality and ingredients. Size is perfect. Taste is nice and they benefit your brain. Dosage can be bigger of PS

iHerb customer

Posted on Sep 11, 2025

Kazakhstan

Verified purchase

This supplement is easy to take and fits smoothly into my daily routine, with clear instructions and no unpleasant aftertaste. I appreciate the transparent ingredient list and overall quality, while keeping in mind that results can vary from person to person.

KentuckyWildcat

Silver

Posted on Jun 24, 2011

United States

215

1,291

I can feel it working

Verified purchase

I tried another PS product that had only the serine form, and that did nothing. I switched to MRM PS to see if the 4 forms of phospholipids would help, and in my case it did.

iHerbNerd

Silver

Posted on Dec 8, 2021

Germany

156

205

315

Large Capsules

Verified purchase

I like that they use large capsules and that they declare a full list of phospholipids and not just phosphatidylserine. But they also use soy instead of sunflower or rapeseed, which I dislike.

iHerb customer

Gold

Posted on May 6, 2024

United States

683

391

a must for good health care

Verified purchase

After reading a good deal about the ingredients, this is one of the better products offering the variations. I think this is vital to maintaining a healthy brain and staying healthy for older adults as well. MRM has several products that use the best extractions from best locations and is always very well priced.

iHerb customer

Posted on Apr 4, 2026

Australia

ADHD / PMDD / management & cell health

Verified purchase

I I love this supplement as it contains both phosphatidylcholine (PC) and phosphatidylserine (PS). I take two per day and have found the quality and ingredient combination to be excellent. I have ADHD, PMDD, and CPTSD, so I’m particularly interested in support for cognitive function and stress regulation. The phosphatidylserine seems especially helpful for focus and managing stress, while the inclusion of phosphatidylcholine makes this a well-rounded formula for cell health and lowering inflammation. There’s also a growing body of research around phospholipids. Some studies suggest that PS and PC (particularly in liposomal form) may help reduce neuroinflammation, which could explain why I’ve noticed benefits for both my PMDD symptoms and stress/cortisol levels especially as chronic stress and trauma are often linked to inflammation. I appreciate that both ingredients are combined into one supplement at an effective dosage; which means fewer tablets to take overall. The capsules are medium-sized but easy to swallow, with no noticeable taste or smell. It is on the pricier side, yes, but considering I would otherwise need to purchase PS and PC separately, the cost feels justified.

iHerb customer

Silver

Posted on Apr 1, 2026

Korea, Republic of

216

Verified purchase

I really like to order on your website, the quality is the best, the delivery is fast, the ingredients are good, the size is small. The taste is neutral! The quality is 5 stars!

iHerb customer

Silver

Posted on Jan 1, 2026

France

214

104

Nice blend of phospholipids

Verified purchase

I usually by Phosphatidyl Serine by Jarrow but it has become prohibitively expensive. I decided to give this one a try and I liked the mix of Phospholipids. It's a largish size gel capsule but it can be swallowed fine. Should be taken with other fats.

Burnicus

Silver

Posted on Nov 5, 2025

Australia

257

Verified purchase

not a bad supplement at all as per usual from iherb, great products, great service and great prices

Customer Ratings & Reviews

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