PS 150 Review by Designs for Health - Dr. Bell
Designs for Health PS 150 review by Dr. Bell. A soy-free, sunflower-sourced phosphatidylserine at 150 mg per capsule to help calm an over-revved cortisol response and support memory and focus. How it works, who it helps, and honest limits.
A patient described being wired and tired at the same time. She was under relentless stress, her mind raced at night when she wanted to sleep, and she felt her focus and short-term memory slipping under the pressure. She suspected her stress hormones were stuck in the on position, and she wanted something that could help take the edge off that revved-up state without sedating her or leaving her foggy.
Her read on herself was astute. When stress becomes chronic, the body can keep cortisol, the main stress hormone, elevated when it should be settling down, and that pattern is exactly the wired-but-tired, can't-switch-off feeling she described, often with a hit to memory and concentration. One of the better-studied nutrients for helping normalize an over-active cortisol response is a phospholipid called phosphatidylserine. I suggested Designs for Health PS 150.
What I like about this one is that it delivers a solid 150 mg of phosphatidylserine per capsule, sourced from sunflower rather than soy, which suits the many people avoiding soy. She took it and found it helped quiet that revved-up, racing quality, especially in the evening, while also supporting her focus during the day. It is supportive care rather than a treatment for anxiety or any condition, but as nutritional help for a stressed-out, over-cortisol state, it fit her well.
Quick verdict: Designs for Health PS 150 is a clean, focused phosphatidylserine.
Order PS 150 →What this product is actually doing
Phosphatidylserine is a phospholipid, a type of fat that is a major structural component of cell membranes, and it is especially concentrated in the membranes of brain cells. Because it is so central to how brain cells are built and how they communicate, supplying it as a supplement supports healthy brain function, and it has two roles that matter most for someone in a stressed state.
The first is its effect on cortisol. Phosphatidylserine has been shown to help normalize cortisol levels when the body is under stress, in other words to take the edge off an over-active stress response rather than to flatten a healthy one. That is why it tends to help the wired, can't-switch-off feeling of chronic stress, and why some people find it useful for promoting a calmer baseline and better sleep, all without acting as a sedative.
The second is cognition. Phosphatidylserine is well regarded for supporting memory and concentration, the very functions that tend to suffer when you are stressed and under-slept. Interestingly, because it helps regulate cortisol, it also supports healthy hormonal balance more broadly, including normal testosterone, since chronically high cortisol can suppress other hormones. Notably, there are essentially no food sources rich in phosphatidylserine, so supplementation is really the practical way to support healthy levels of this brain nutrient.
What is in PS 150
Each capsule provides 150 mg of phosphatidylserine sourced from sunflower lecithin, making it soy-free, in a vegetarian capsule with a minimal list of other ingredients. It is non-GMO. The recommended use is one capsule per day, or as directed by your provider, with the timing chosen to fit the goal.
I appreciate that the phosphatidylserine here comes from sunflower rather than soy, which is a meaningful quality choice given how many people are avoiding soy, and that the 150 mg per capsule is a clean, clinically sensible dose that is easy to adjust. The formula is focused and minimal, just the active phospholipid in a single capsule, which is exactly what you want for a targeted nutrient like this.
PS 150 Direct from the Manufacturer
Most supplements are heat- and humidity-sensitive, and potency drops fast in a third-party warehouse. Buying through my DFH store means your bottle goes from their climate-controlled facility straight to your door, at practitioner pricing.
Order PS 150 →Who this is for
I reach for PS 150 for adults dealing with chronic stress and that wired, over-revved feeling, particularly those who notice it affecting their sleep, focus, or short-term memory, and who want nutritional support for normalizing an over-active cortisol response. The soy-free, sunflower source makes it a good fit for people avoiding soy, and the single-capsule dose is easy to work into a routine.
It is supportive care, not a treatment for anxiety, depression, a cortisol disorder, or any diagnosed condition, and persistent anxiety, mood problems, or sleep disturbance deserve proper evaluation rather than self-treatment. Because phosphatidylserine can lower cortisol and may have mild blood-thinning potential, anyone on corticosteroid or blood-thinning medication should check with their provider, as should anyone who is pregnant, breastfeeding, or managing a medical condition. It works best alongside the real levers of stress, sleep, movement, and stress-management practices, rather than as a substitute for them.
How to use it
The straightforward approach is one capsule daily, with the timing matched to your goal: in the evening if you are mainly trying to quiet a racing, over-cortisol state at night, or earlier in the day if your focus is on daytime concentration. It can be taken with or without food, is best used consistently over several weeks to judge its effect, and belongs within a broader plan that also addresses the sources of your stress.
Bottom line
Designs for Health PS 150 is a clean, focused phosphatidylserine. It delivers 150 mg per capsule from sunflower rather than soy, to help normalize an over-active cortisol response and support memory and concentration, the things that tend to suffer under chronic stress, without sedating you. For adults in a wired, stressed-out state who want nutritional support for a calmer baseline and sharper focus, it is a sensible, well-made choice. It is supportive care rather than a treatment for any condition, but used appropriately it does its job well.
Always check with a healthcare provider before starting PS 150, especially if you take corticosteroid or blood-thinning medication, or are pregnant, breastfeeding, or managing a medical condition.
← See all stress, mood & sleep reviews by Dr. Bell
Ready to try PS 150?
It is one I trust enough to use with my own patients and order for my family. Through my DFH store you get the authentic, direct-from-manufacturer product with practitioner pricing applied automatically at checkout.
Order PS 150 →Authentic, direct from Designs for Health · practitioner pricing · no third-party counterfeits
About the Author: Dr. Bell
Dr. Bell is a chiropractor and holistic wellness practitioner at Dr. Bell Health. He writes plain-language reviews of Designs for Health supplements based on years of clinical experience. Read more about Dr. Bell.