Phosphatidylcholine (PC)

David Tomen
David Tomen
11 minute read
Phosphatidylcholine (PC) is known to repair brain cells and neural connections, boost acetylcholine, and improve alertness, cognition, focus, memory and mood

Phosphatidylcholine (PC, or Ptd-Cho) is one of two fatty acids that make up the outer layer of the membrane covering each of the 70 trillion cells in your body.

Phosphatidylcholine is also converted in your body through a process called hydrolysis to make up the fatty acids AA, oleic, linoleic, linolenic, and DHA. These fatty acids contribute to the signaling within and between brain cells for long-term potentiation (LTP). LTP is behind the formation of long-term memories.

The synthesis of the neurotransmitter acetylcholine (ACh) is largely dependent on the choline provided by Phosphatidylcholine. ACh is critical for cognition, learning and memory.

When you don’t have enough Phosphatidylcholine, brain cell membranes lose integrity and eventually die.

Some Phosphatidylcholine (PC) is naturally synthesized in your body. We also get PC from some of our food including beef, oysters, eggs and some vegetables. As a nootropic supplement, Phosphatidylcholine is derived from lecithin found in soybeans and sunflower seeds.Phosphatidylcholine boosts cognition

Note that lecithin and Phosphatidylcholine are NOT the same thing. Plain lecithin is not an efficient source of Phosphatidylcholine or choline. As a nootropic, look for as pure of a source of Phosphatidylcholine (PC) as you can afford.

Phosphatidylcholine helps:

  • Neuroprotection: Phosphatidylcholine (PC) is a major component of brain cell membranes. And neurons use some of this choline to synthesize acetylcholine (ACh). Supplementing with PC restores the PC that is needed for brain cell membrane integrity. While providing neurons with the ACh needed for memory and learning.
  • Neurotransmitters: Phosphatidylcholine increases concentrations of choline and acetylcholine in the brain. Improving memory and cognition.
  • Neurogenesis: Phosphatidylcholine helps restore damaged brain cells. Making them more fluid and permeable allows the proper flow of chemical messengers and nutrients into and out of the cell. And improving overall cell function and efficiency. Resulting in better cognition, learning, memory, and mood.


Phosphatidylcholine (PC, or Ptd-Cho) is a phospholipid that plays a critical role in every cell in your body. Including your brain.


Your brain cells are each encased in a membrane. This bi-lipid layer of two fatty acid tails face each other. The outer layer of each cell contains mostly the phospholipids phosphatidylcholine (PC) and sphingomyelin, while the inner layer contains predominantly phosphatidylserine (PS), phosphatidylinositol, and phosphatidylethanolamine.

The outer layer of each cell membrane is highly permeable. But the inner layer is much less permeable. These two fatty acid tails are in a constant state of movement, vibrating at millions of times a second. This continual vibration could be considered the ‘backbone of life’. And is the basis of everything that happens in your brain.

The amount and type of long-chain fatty acids in your diet affects the composition of these cell membranes. The structure and function of your cells depend on the ideal balance of fats including cholesterol, oleic, palmitic and stearic fatty acids. And essential fatty acids like Omega 3. Without this proper balance, cell membrane function is compromised.

And you can be sure that our modern diet does not provide the ideal balance of fatty acids (phospholipids) to maintain brain cell integrity. It’s why you experience brain fog, memory loss, slow thinking and poor decision making.

Some progressive health care researchers and practitioners have found that supplementing with phosphatidylcholine (PC) can lessen the symptoms of diseases like MS, diabetes, immune system problems, asthma, and neurodegenerative diseases like Alzheimer’s.

You naturally get phosphatidylcholine (PC) from foods such as beef, eggs, oysters, broccoli and brussel sprouts. Supplemental phosphatidylcholine (PC) is made from lecithin found in soybeans and sunflower seeds.

Phosphatidylcholine (PC) maintains the integrity of brain cell membranes. And is directly involved in acetylcholine (ACh) synthesis. ACh is needed for cognition, learning and memory formation.


How does Phosphatidylcholine work in the Brain?

Phosphatidylcholine boosts brain health and function in several ways. But two in particular stand out.

  1. Phosphatidylcholine is needed for long-term memory. The hydrolysis of Phosphatidylcholine (by a process called phospholipase A2-catalyzed hydrolysis) is used to make the free fatty acids AA, oleic, linoleic, linolenic and DHA.

These free fatty acids facilitate synaptic transmission by targeting nicotinic ACh receptors using protein kinase C (PKC). This messenger system is needed for long-term potentiation (LTP). Researchers have determined that these fatty acids are critical for learning and memory.[i]

  1. Phosphatidylcholine helps repair neurons. Cholinergic neurons are unique among cells because they serve two functions. PC is a major component of brain cell membranes. And serves as a storage pool for the choline needed as a precursor for acetylcholine (ACh) synthesis.

Researchers demonstrated how this works. They incubated human cholinergic cells in the lab. And followed the metabolic link between membrane composition and turnover, and ACh synthesis. And proved that ACh is synthesized from choline derived from the degradation of Phosphatidylcholine.

If there is not enough choline available to maintain brain cell membrane integrity, and to synthesize the neurotransmitter acetylcholine, brain cell function breaks down. You experience brain fog, poor memory and decision making. And ultimately leading to neurodegenerative diseases like Alzheimer’s, and other motor neuron disorders.[ii]

How things go bad

As you get older, your brain chemistry and energy metabolism changes. This can happen at any age once you enter your adult years. Low Phosphatidylcholine levels have even been found in newborn babies.Phosphatidylcholine-improves-mood

↓ Brain cell membranes degenerate

Recall, reaction time and mood diminish

↓ Acetylcholine levels decline

All of these changes can happen at any age. Your body is influenced by the food you eat, what you drink, lifestyle habits, the air you breathe and more.

So Phosphatidylcholine can help for age-related cognitive decline, as well as a student looking to do better in school.

Phosphatidylcholine benefits

Phosphatidylcholine (PC) has been around as long as humans have walked this planet. PC is a critical component of the top layer of the membrane surrounding each one of the cells in your body.

And yet some are talking about Phosphatidylcholine as the “New Wonder Drug”. How could this be? Turns out that PC is a fatty acid. As are many of the fats you consume in your modern diet.

Long-chain fatty acids affect the composition of your cell membranes. When you eat bad fats your cell membrane fluidity is affected, ion channels disrupted, hormones, regulation of neuroreceptors, signaling and other signaling chemicals are affected.

Incorrect amounts or types of long chain fatty acids can lead to a cascade of serious health and cognition problems.

The easiest and simplest way to correct many of these cognition problems is to supplement with Phosphatidylcholine as a nootropic. You’ll feel better as cells are repaired. Digestion issues could be eliminated or minimized. And brain fog, cognition and memory problems could become a non-issue.

How does Phosphatidylcholine feel?

If you eat a perfectly healthy diet and are in optimal physical and mental health, using Phosphatidylcholine may not do anything for you.Phosphatidylcholine increases neural signalling

But if you’re like most in the Western world relying on fast food, processed food and other unhealthy lifestyle habits, then PC may help.

Neurohackers report that supplementing with Phosphatidylcholine lifts brain fog, improves working memory and boosts alertness.

Others say it helps them prevent anxiety and panic attacks. Mental clarity is improved, and energy levels rise.

Ray Kurzweil, the famous inventor and futurist, gets phosphatidylcholine intravenously once a week at his health clinic. His theory is that this will rejuvenate all his body’s tissues.[iii]

Phosphatidylcholine Clinical Research

A double-blind study in California with 80 college students investigated the effect of Phosphatidylcholine on memory. The students received a placebo or either 10 or 25 grams of Phosphatidylcholine (PC). 25 grams of PC was estimated to supply about 3.75 grams of choline.

Memory was tested at 60 and 90 minutes after taking PC. The researchers recorded a significant improvement in memory after 90 minutes, and only a slight improvement after 60 minutes.

This 1993 study was the first to test the relationship between a single dose of Phosphatidylcholine on memory in healthy human subjects.[iv]

Phosphatidylcholine Prevents Brain Cell Death

Streptococcus pneumonia is the most common cause of bacterial meningitis. And is the most common cause of death from pneumonia. If it doesn’t kill you, it can cause paralysis, mental retardation and learning disorders.

In humans, it’s your hippocampus neurons that are the first to die as a result of meningitis. Cell death is officially called “apoptosis”. But I’m using cell death to drive a point home.

Phosphatidylcholine (PC) is an essential component of your cell membranes. And a deficiency of PC, either from chemicals, disease, or bad nutrition leads to cell death. And the first to go are your hippocampal neurons. The same neurons used for learning and memory.

Researchers in Tennessee found that a variety of brain cells die after you get pneumonia. Because it interferes with Phosphatidylcholine synthesis. And apoptosis inhibitors can’t even stop this cell death from happening.

The research team determined that the only way to prevent cell death from pneumonia infection was supplementing with Phosphatidylcholine. Even after the infection set in.

The researchers concluded that supplementing with Phosphatidylcholine was the best way to prevent what they called an “apoptotic cascade”. And the best therapeutic intervention.[v]

Phosphatidylcholine Improves Memory

Studies on the effect of Phosphatidylcholine on memory are limited. So researchers in Japan decided to remedy this lack of data by testing PC in mice with dementia.

They administered PC to mice with dementia and to normal mice. And compared differences in memory, choline and acetylcholine concentration, and choline acetyltransferase (ChAT) activity. ChAT is the enzyme responsible for the synthesis of acetylcholine in the brain.

The researchers found that giving phosphatidylcholine for 45 days to mice with dementia improved memory. And generally increased brain choline and acetylcholine concentrations to or above the levels of the normal control mice.

The research team concluded that phosphatidylcholine increases brain acetylcholine concentration and improves memory.[vi]


Phosphatidylcholine recommended dosage

Recommended Phosphatidylcholine dosage is 1,200 mg to 5 grams per day. And divide your total daily dose into 2 or 3 equal doses and dosed throughout the day.

To enhance bioavailability and boost absorption, take PC 30 minutes before a meal.

Do not take Phosphatidylcholine with acetylcholinesterase (AChE) inhibitors since this combination may excessively increase acetylcholine (ACh) levels and potentially cause cholinergic side effects. AChE inhibitors include donepezil (Aricept), Tacrine (Cognex), rivastigmine (Exelon) and Huperzine-A.

Phosphatidylcholine Side Effects

Phosphatidylcholine is naturally produced in your body and is considered well tolerated and safe. PC is not toxic.

Some may experience sweating, stomach upset and diarrhea. Particularly if you’re already high in choline.

Type of Phosphatidylcholine to buy

Phosphatidylcholine is sold in tablet, capsule, liquid and powder form. Capsules can run from 420 – 1,300 mg each. 500 mg of Phosphatidylcholine in powder form is equivalent to 2-level 1/8 tsp scoops.

Phosphatidylcholine is sometimes used interchangeably with “lecithin” which is misleading and simply not accurate. Choline is a component of phosphatidylcholine, and is also found in very small amounts in plain lecithin. Although closely related, these terms are not the same.

You will experience the nootropic benefits by supplementing with Phosphatidylcholine but not with lecithin.

Nootropics Expert Recommendation

Phosphatidylcholine 1,200 mg to 5 grams per day

Nootropics Expert Tested and ApprovedI recommend using Phosphatidylcholine (PC) as a nootropic supplement.

Phosphatidylcholine helps build and repair cell membranes. And is found in every one of the 70 trillion cells in your body.

You can get Phosphatidylcholine from some of the food you eat. But Phosphatidylcholine is only found in foods like beef, eggs, oysters and some vegetables. PC levels decline as you age and you are unlikely to get nearly enough through diet. So to get its benefits you must take it as a nootropic supplement.

Phosphatidylcholine is vital to maintaining optimal brain health. And has been shown to increase cognitive energy, boost brain function, enhance communication between neurons, and protect neural membranes from free radical damage.

I suggest starting with a dose of at least 1,200 mg daily. Phosphatidylcholine is a great compliment to a stack including any nootropic from the racetam-family. Anything that causes an increase in uptake of acetylcholine in your brain.

You need to provide your brain with the choline it is demanding. Or it starts cannibalizing your own brain cells to make more acetylcholine. Signs that you’re lacking adequate choline or acetylcholine are headaches.

Use Phosphatidylcholine at a ratio of 1:4. For example, 250 mg of Phosphatidylcholine to 1,000 mg of Aniracetam.

If you have liver damage like cirrhosis, you may want to increase the dose up to 4.6 grams per day for liver repair.

As an Amazon Associate I earn from qualifying purchases. This post may also contain other affiliate links and I will be compensated if you make a purchase after clicking on my links.

[i] Nagat T., Yaguchi T., Nishizaki T. “DL- and PO-phosphatidylcholines as a promising learning and memory enhancer” Lipids Health Dis. 2011;10:25. (source)

[ii] Blusztajn J.K., Liscovitch M., Richardson U.I. “Synthesis of acetylcholine from choline derived from phosphatidylcholine in a human neuronal cell line.” Proceedings of the National Academy of Sciences U S A. 1987 Aug;84(15):5474-7. (source)

[iii] Wolf G. “Futurist Ray Kurzweil Pulls Out All the Stops (and Pills) to Live to Witness the Singularity” Wired Magazine March 24, 2008 retrieved July 11, 2016 (source)

[iv] Ladd S.L., Sommer S.A., LaBerge S., Toscano W. “ Effect of phosphatidylcholine on explicit memory.” Clinical Neuropharmacology. 1993 Dec;16(6):540-9. (source)

[v] Zweigner J., Jackowski S., Smith S.H., Van Der Merwe M., Weber J.R., Tuomanen E.I. “Bacterial inhibition of phosphatidylcholine synthesis triggers apoptosis in the brain.” Journal of Experimental Medicine. 2004 Jul 5;200(1):99-106. (source)

[vi] Chung S.Y., Moriyama T., Uezu E., Uezu K., Hirata R., Yohena N., Masuda Y., Kokubu T., Yamamoto S. “Administration of phosphatidylcholine increases brain acetylcholine concentration and improves memory in mice with dementia.” The Journal of Nutrition. 1995 Jun;125(6):1484-9. (source)

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Join The Discussion - 124 comments

max johnson
April 5, 2024

now compare to CDP choline and alpha GPC.

    David Tomen
    April 8, 2024

    CDP-Choline can be used long-term safely. But a large study conducted in Japan showed long-term use of Alpha GPC increases your chance of stroke by 47%.

Nishith Mahfuz
January 21, 2024

Hi David,
My close relative diagnosed with schizophrenia. She is being treated with antipsychotic and mood stabilizer.
• Lurasidone: Dopamine D2, Seratonine Type 2(5HT2A) antagonist.
• Limotrizine: Inhibits voltage-gated sodium channels to inhibit Glutamate.
She also is suffering Capgrass Syndrome, a delusional identity disorder which could be a cognitive part of positive symptom of Schizophrenia or as an independent neurological issue.
I understand this is not a medical advice and we are working with the medical team all along.
What I would like to know whether PC can potentially improve memory/cognitive impairment without interfering in Dopaminergic or Glutaminergic system unlike Alpha-GPC, CDP-Choline and Uridine.
I would appreciate your input in it and if possible, listing of few nootropics that may work.
In that manner.

    David Tomen
    January 22, 2024

    Nishith, I do not have any research showing Phosphatidylcholine could help with schizophrenia. I suggest that you use the search function top right of the top menu and do a search for the keyword “schizophrenia”. You will get a list of suggestions on supplements that help reduce the symptoms of schizophrenia.

July 19, 2023

Hello David, I was wondering whether or not there are any benefits that are offered by phosphatidylcholine that are not offered by CDP Choline and Alpha GPC. Could taking PS and CDP or possibly even PS, CDP, and Alpha GPC be justifiable?

    David Tomen
    July 25, 2023

    Will, if you are using CDP-Choline and PS I don’t see any reason to use PC. Unless you know for sure your cells are suffering from membrane degradation.

May 4, 2023

Hi David, I love your work and have bought the 2nd edition of Head First. I have only just started reading it – looks great. My question is that I get the impression that you favour Alpha GPC and CDP-Choline over Phosphatidylcholine? Do they all provide the brain with the necessary Choline? For me it is easier to purchase Phosphatidylcholine but am I missing something not using the other Choline supplements?

    David Tomen
    May 5, 2023

    Debbie, please leave a review! And thank you for getting a copy of my new book. And sorry it took so long to finish it and get it published!

    Alpha GPC naturally occurs in your brain as a byproduct of phosphatidylcholine (PC). And CDP-Choline contributes to the production of phosphatidylcholine. There are several ways to produce acetylcholine. But all of them involve providing a choline molecule for acetylcholine production. So, use whichever works best for you. I happen to prefer CDP-Choline because it works quickly and is safe to use long-term.

February 10, 2023

What do you think about sunflower lecithin? “contains a large amount of natural phosphatidylinositol, phosphatidyl ethanolamine and essential fatty acids” is it worth taking if they are really essential?
I currently have a soy lecithin PC supplement and I recently read a scathing article that it can be very harmful but looks too far-fetched.

February 6, 2023

Hello, I am unable handle the side effects of Citicoline, but have tolerated small amounts of Phosphatidylcholine and Choline-Bitartate. Could you recommend either of these to boost mental focus for attention deficit? And which one do you feel is best, thank you.

    David Tomen
    February 9, 2023

    Luke, Choline Bitartrate cannot easily cross the blood-brain barrier. Better to use Phosphatidylcholine and Phosphatidylserine if you are sensitive to choline supplements.

Phil Owen
January 13, 2023

Hi David,
I came across this paper which concerned me as I’m looking to make capsules of a mix of uridine monophosphate, Alpha GPC and DHA omega-3 and I obviously don’t want to cause problems with heart disease. Do you think that this effect of gut bacteria on Phosphatidylcholine could also affect Alpha-GPC?

    David Tomen
    January 13, 2023

    Phil, Alpha GPC naturally occurs in your brain as a byproduct of phosphatidylcholine (PC). Not in your gut.

    February 10, 2023

    Wow, is this side effect significant?

      David Tomen
      February 13, 2023

      Dan, what side effect are you referring to? Many want to avoid soy because of the negatives associated with soy.

Phil Owen
January 12, 2023

Hi David,
Have you come across this paper?
Am I reading it right & supplementing with phosphatidylcholine increases the risk of heart disease?
I’m sorry if you’ve covered this somewhere, but I have looked through the brilliant info. you provide and I didn’t find anything.
The reason I’m interested is that I sell (at cost price) frankincense capsules for its anti-inflammatory effect on arthritis. It’s getting good reviews. I’m now looking at dementia, Parkinson’s etc. and have started making capsules of a mix of UMP, Alpha-GPC and DHA Omega-3 with the idea of alternating frankincense (to reduce brain inflammation) with the UMP mix (to increase synapses).

    David Tomen
    January 13, 2023

    Phil, I am aware of the association theoretically of increased TMAO and increased chances of heart disease. But all the studies I’ve seen are in mice. There are zero studies as far as I can tell with humans supplementing with PC and then dying of a heart attack.

    BTW, the same study points out that you can counter this effect by supplementing with either Lactobacillus paracasei or Lactobacillus rhamnosus probiotics if you’re worried about it.

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