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Phosphatidyl Serine

Cortisol suppressor



In stock | Usually dispatched within 24 hours

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Phosphatidyl Serine (PS) is a naturally occurring nutrient called a phospholipid and is an essential component of human cell membranes. It is found in particularly high concentrations in the membranes of cells with a high metabolic activity such as the brain, heart, liver and skeletal muscle.

Phosphatidyl Serine supplementation can also suppress cortisol production. Cortisol and other stress responses are known to be associated with immune suppression and tissue breakdown. This can result in protein been drawn out of the muscle and create a catabolic state. Therefore, using Phosphatidyl Serine could help maintain lean mass during periods of heavy stress and intense exercise.

Phosphatidyl Serine has been reported to have positive effects on mental function and mood. It has been prescribed to those suffering from Alzheimer's disease and other age associated cognitive decline. Several studies suggest that patients in the early stages of Alzheimer's respond better. Results also show patients experienced better moods and behaviour as a result of using Serine.

It has also been suggested that Phosphatidyl Serine could help improve aerobic endurance by delaying the onset of fatigue.

Our PS is derived from Soy.

Product Reviews - 13 reviews

- (18 / Nov / 2013)


This was undrinkable - made me retch. Smells and tastes awful. Please bring back the phosphatidyl serine in tablet form!

Goes Well With:

No sense of smell or taste.

PS = Powerful Stuff!

- (22 / Oct / 2013)


Love this product and love the price too! I throw it in to my blender whilst creating a green smoothie for a whole body tonic... I mean really, it does so many things to improve performance and retard aging who shouldn't be using it? It has a bland taste if you tip your tongue into it.... not bad but ideally placed in a spoonful of yogurt, nut or seed butter if on the run, or blended with your favourite ingredients in a shake or smoothie if you've a little more time. Well worth the effort either way.

Goes Well With:

Fish oils for healthy heart brain, circulation etc.

Phosphatidyl Serine

- (05 / Aug / 2013)


I will start by saying Phosphatidyl Serine doesn't mix very well or even taste nice, but I didn't purchase it for those reasons, I purchased this product to help reduce cortisol levels. Taking 1g in the morning after training and 1g at night just before bed (mixed with 250ml water) it has helped me sleep deeper (I don't wake up as many times as I used to), and it has even helped my metabolism. It arrived within 48 hours of purchase in perfect condition. I would definitely use MyProtein again for supplements etc.

Phosphatidyl Serine

- (17 / Jun / 2013)


I use Phosphatidyl Serine to help me relax and sleep at night. It also improves brain function. I have found it works very well.

Brain and body fix.

- (27 / May / 2013)


Love this Phosphatidyl Serine! Really hones the mind so that focus is so much sharper. Perfect in a green smoothie first thing but on the run I have eaten a half teaspoonful in some coconut oil and found it tasted very acceptable... bit like Lecithin granules. Just really wish the pack had a measuring scoop to make the small doses needed easier to estimate. I have looked around for suitably sized mini scoops but they seem difficult to source? Last but never least, the price.. outstanding! I use to take a capsule form and it costs ten or more times as much! So many thanks for saving me a second mortgage

Goes Well With:

Grapeseed extract


- (20 / Mar / 2013)


I honestly am gob smacked by the results...1 week of 3gs of Phosphatidyl Serine a day and my tummy has gone. Always had a small tyre that I couldn't shift. Its gone! Started a new job and my stress levels had gone through the roof and the bulging tummy was growing. So my partner bought me this and I seem more chilled as well. If its psychological I don't care...its worked. It tastes disgusting, and it won't mix with anything and you can always taste it so resorted to teaspoon and swiftly followed by warm water.

- (29 / Jul / 2012)


"I thought I would give it a try to reduce my cortisol levels. I noticed a marked positive effect from day 1, I have not been this relaxed in a long time and I feel like "me" on a good day. The taste is its Achille's heel-tried cocoa powder, honey etc...still sharp and pungent; MP: could you have it flavoured?"

- (16 / Jan / 2012)


"Small round sticky granules, reminiscent of Soy Lecithin........... In my mouth there is a just about a taste but it's barely anything, also reminiscent of Soy Lecithin........... I did empty out one of the older larger size MP Magnesium / Zinc capsules and found that 1 1/2 MP mini scoops (the 300mg dose) of PS fitted just right with a small tap and shake. But there's no need for me to cap this........... I aimed at having 400mg per day but over about 6 months the two mini scoops worked out to 560mg per day of PS in my morning protein / green powders drink which I mix warm water into with just a simple stir........... The initial effect for me was like having a bit too much caffeine, but without becoming: uncoordinated, sad, shaking for 6 hours, unable to sleep........... I noticed my painful joins, caused by what I presume was inflammation and swelling, no longer hurt........... I started taking it six months ago to see if it would help with memory and mental sharpness but I'm not sure if there was much or any improvement........... It seems to have given me some tolerance to cocoa which previously could stop me sleeping and have an effect approaching caffeine. I can now have 20 grams of cocoa in the morning and sleep that night; not possible before........... So the PS does have an effect with me, perhaps based in moderating a Cortisol response or level? The reviewers below who found a mental improvement maybe were having a lot higher dose at 1/2 or 3 x 1/4 teaspoon a day."

- (03 / Apr / 2011)


"Quick point to using this, it tastes vile (to me at least) and isn't water soluble. How I have been taking it is on a spoon with a small chunk of peanut butter which makes it somewhere much nearer to ok."

- (18 / Aug / 2010)


"Love this stuff post workout. Really good for stresses balance and you will feel much less tense and stressed. Also, helps with protein synthesis of the liver. Only problem is the taste and it doesnt mix but I just use the capping kit."

- (19 / Apr / 2009)


"PS was originally manufactured from the brains of cows, and all the studies described here used this form. However, because animal brain cells can harbor viruses, that form is no longer available. Most PS today is made from soybeans or other plant sources. There are reasons to expect that plant-source PS should function very similarly to PS made from cows' brains, and some animal studies suggest that it is indeed effective. However, in preliminary trials, soy-based PS and cabbage-based PS failed to prove beneficial. PS has been proposed as a sports supplement. However, there is as yet no direct evidence to support the claims that PS actually helps athletes build their bodies up more quickly and with less training effort. Furthermore, the most recent and best-designed study, using vegetable-source PS, failed to find any effect on cortisol release or DOMS."

- (12 / Apr / 2009)


I took about 1/2 teaspoon twice a day for 5 weeks. I added it to my daily shakes - i have without doubt felt sharper and more clear headed - this is a great supplement for memory boost and I am sure it elevated my mood - the equiv in GNC is about 10 times the price - good job guys

- (21 / May / 2008)


"I recently started using this again - this time the MP stuff - and i'm loving the results. I have been using it only about 10 days now - 1/4 tsp in the morning, after training, and before bed (basically when cortisol levels are peaking). I've been quite lean for a while now, but always struggled to shift the tire around my belly, despite calorie restriction, extra cardio, cutting carbs, etc.. Since taking this stuff, i've definately noticed my 'roll' is starting to go. I've also noticed greater mental acuity, and less fatigue after dealing with stressful situations. My only minor issue is that it doesnt mix all that great, but a bit of stirring does it. It tastes neutral. I just wish MP would stock a higher extract, as i think the results would be even better ...."

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