ME-3 Lactobacillus Fermentum

#1

From ChatGPT:
• The original strain (Lactobacillus fermentum ME-3, DSM 14241) was deposited at DSMZ (Germany’s strain bank).
• Licensed companies (VF Bioscience in Europe) culture it under controlled lab conditions → freeze-dry it → encapsulate it.
• So unlike common yogurt cultures (which can be propagated locally), ME-3 is tightly held under patent/licensing agreements. You won’t find it just by buying generic L. fermentum.

I can no longer find the strain ME-3 anywhere. Must be a patent problem according to ChatGPT. Consumer Labs in their lipid section once favorably reviewed a product called Reg’Active ME -3 which contains this bacteria strain that lowers lipid levels. It was available on Amazon. Has been unavailable and off the market for a year now. It really lowered my lipid levels to normal. .
I take 5 mg rapamyacin weekly and the only side effect I’ve from this is dosage is elevated lipids. ME-3 worked like a charm.

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#2

I was buying Regactive with ME-3 on Amazon, but recently it became unavailable.

#5

This is the brand that I know of, looks like they are just out of stock:

As an aside I did not notice any positive effects on this probiotic after using it for a few months.

I am a bit skeptical of the specialized strains. Yes this is the one that has been studied and yes it probably has higher overall antioxidant properties than normal L Fermentum. But what’s stopping you from buying bulk L Fermentum at Custom Probiotics or Bulk Probiotics at like 200b vs 8b in these capsules? Even if its’ a small fraction of the amount of antioxidant ability the dosage should make up the difference?

#6

I also used it for a few months and also didn’t notice anything good or bad.

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#7

It looks like ME-3 has a few extra unique mechanisms that distinguish it from just plain L Fermentum, in that it actually generates Glutathione vs recycling it (Lactobacillus fermentum ME-3: A Breakthrough in Glutathione Therapy - PMC)

It’s a shame because I have had a good response to other probiotics that produce compounds in the gut, namely C butyricum, the Miyarisan brand. I was very drawn to the idea that the Glutathione is produced where it needs to be, in the gut. Parkinson’s runs in my family and I was going to recommend this to my mom who has it if it helped. Maybe the 8bil dose is just too low?

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#8

Dr. Pelton is on this forum. Perhaps he can chime in on this.

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#9

For one small personal shipment, I basically had to:
Navigate the FDA Prior Notice system,
coordinate with FedEx International Clearance,
and pay multi-agency brokerage fee. Supplements are considered food when coming from Europe and are required to to have an extensive FDA form filled out. The seller didn’t file the form upfront so it was held by customs. It took me an afternoons work to fill out the form. it’s released now and on its way. Supplements coming from Europe are heavily regulated and taxed.

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#10

i used essential ME-3 for 5 months, one cap daily and just got my blood panel results and the glucose, lipids and triglycerides were much improved. No abnormal flagged results. I am sold on it. I still weigh the same as before and I and haven’t been exercising… I stopped rapa a month before the draw and all supplements a week ahead and fasted for the draw. I think it works for me. It’s available again in the US.

#11

Where do you buy ME-3? I was taking it for some time before it became unavailable.

#12

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Back in stock in the US.

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#13

:red_circle: Earlier pattern (2021–2024)
• LDL up to 160
• Triglycerides up to 169
• HDL low (~43–48)
• Total cholesterol ~229

:point_right: That is a true abnormal pattern, not borderline.

⸻

:green_circle: Current (2026)
• LDL down to 128
• Triglycerides down to 96
• Total cholesterol 193

:point_right: That is a clear improvement across the board
Glucose down to 92 - was predisbetes before.
I am overweight female 178 lbs age 76.

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#14

It’s a clear improvement! Congratulations! I stopped statins and Zetia (horrible side effects) and started Repatha. My pre-Repatha LDL was 138 and I want it around 50.

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#15

I am running out of a probiotic that I am using (multi-strain) So, so I decided to query a few AIs about what would be best for an 85-year-old male.

Bottom bottom line. The shotgun approach is not recommended.

I am more interested in potential cognitive benefits, so I asked about specific strains that might help. I think that I will try: Life Extension Bifido GI Balance, probiotics, Bifidobacterium longum BB536® (2 Billion CFU)

FWIW:

This is a summary from ChatGPT-5, Gemini, Claude, and Perplexity Pro. (Apparently I broke Aristotle as it is still thinking)

I used a prompt optimizer, but the prompt was basically what are the most promising probiotics for an 85-year-old male.

Side note: ("One interesting twist related to your earlier observation:

Your use of enteric-coated capsules likely improves colon delivery dramatically. That might actually matter more than the specific strain in many cases.") “Many microbiologists believe that delivery to the colon matters more than the strain because stomach acid destroys most bacteria. Your approach may therefore be a very effective way to improve probiotic survival.”

Top 5 Most Promising Probiotics for an 85-Year-Old Male

1. Akkermansia muciniphila (pasteurized)

Why it ranks #1

  • Found enriched in centenarians
  • Human trials show improved insulin sensitivity
  • Reduces metabolic endotoxemia (LPS)
  • Strengthens gut barrier

Relevance for aging

  • metabolic syndrome
  • systemic inflammation
  • gut permeability (“leaky gut”)

Pasteurized versions appear more effective and safer than live forms.

2. Bifidobacterium longum BB536

One of the best studied probiotics for elderly populations.

Human trials show:

  • improved cognitive scores
  • fewer respiratory infections
  • improved gut microbiome diversity

Also supports:

  • immune balance
  • anti-inflammatory signaling

This strain is widely used in Japan’s aging research programs.

3. Bifidobacterium animalis subsp. lactis HN019

Among the strongest immune-aging evidence.

Clinical trials in adults >65 show:

  • increased Natural Killer (NK) cell activity
  • increased phagocytosis
  • faster gut transit time

Practical benefit:

  • often improves constipation, a major issue in elderly populations.

4. Lactobacillus fermentum ME-3

A unique strain metabolically.

Human studies show:

  • reduced oxidized LDL
  • increased total antioxidant status
  • improved glutathione metabolism

Why this matters at age 85:

  • glutathione production declines with age
  • oxidative stress drives vascular disease and frailty.

This strain is sometimes called a “glutathione probiotic.”

5. Lactiplantibacillus plantarum (C29 / OL3246 / similar strains)

Emerging evidence for brain aging and inflammation.

Trials in older adults show:

  • improved memory and attention
  • increased BDNF
  • reduced gut inflammation markers
  • improved quality-of-life scores

This makes it a good candidate for gut-brain axis support.

Higher confidence probiotics

  1. Bifidobacterium longum
  2. B. lactis HN019
  3. Lactobacillus plantarum

Interesting but still experimental
4. Akkermansia muciniphila

Mechanistically interesting
5. Lactobacillus fermentum ME-3

Most Promising Probiotic Strains for Cognitive Benefits

1. Lactiplantibacillus plantarum C29

(often delivered as a fermented soybean preparation called DW2009)

Evidence

  • Randomized controlled trials in older adults with mild cognitive impairment showed:
    • improved attention and memory scores
    • increased brain-derived neurotrophic factor (BDNF)

Proposed mechanism

  • reduces gut inflammation
  • increases BDNF (supports neuron survival and plasticity)
  • improves gut barrier and reduces endotoxin signaling to the brain

Strength of evidence:
:star: One of the strongest probiotic strains studied specifically for cognition in older adults

2. Bifidobacterium longum BB536

Evidence
Human studies show:

  • improved cognitive test scores in elderly subjects
  • better sleep quality and mood in some trials
  • increased beneficial gut bacteria and reduced inflammatory markers

Mechanisms

  • increased short-chain fatty acids
  • improved immune regulation
  • reduced systemic inflammation affecting the brain

Strength of evidence:
:star: Strong safety data + moderate cognitive evidence

3. Bifidobacterium breve A1

This strain has excellent cognitive data, although it’s not one you mentioned earlier.

Human trials

  • improved memory scores in adults with mild cognitive impairment
  • reduced inflammatory markers associated with neurodegeneration

Mechanism

  • suppresses neuroinflammation signals from the gut
  • alters tryptophan metabolism (affecting serotonin pathways)

Strength of evidence:
:star: Very promising for memory

4. Lactobacillus plantarum DR7

Human trials

  • improved memory and cognitive processing speed
  • reduced stress and cortisol

Mechanism

  • alters neurotransmitter precursor metabolism
  • modulates inflammatory cytokines affecting brain signaling

How These Work (Gut–Brain Axis)

The cognitive effects likely occur through several pathways:

  1. Reduced neuroinflammation
  • gut bacteria decrease inflammatory cytokines reaching the brain
  1. Short-chain fatty acids
  • butyrate supports neuronal metabolism
  1. Neurotransmitter modulation
  • serotonin, dopamine, GABA pathways
  1. BDNF signaling
  • improves synaptic plasticity

Best Practical Choice for You

Because you are 85 and cognitively healthy, the most rational strategy is:

Foundation strain

Bifidobacterium longum BB536

Reasons:

  • best safety data in elderly
  • immune + gut + moderate cognitive support
  • well-studied strain

Add a targeted cognitive strain

If you want to experiment:

  • Lactiplantibacillus plantarum C29
    or
  • Bifidobacterium breve A1
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