Healthy aging · Cell health · Radiance
Primeadine® Original Daily Whole-Food Spermidine Powder
Award-winning, whole-food spermidine powder designed to support healthy aging, cellular health, and vitality. Made from concentrated, defatted wheat germ extract, sourced in Japan.
Gluten free? Gluten-free alternative here.
Dual-country third party tested in Japan and the USA
View our certificates of analysis here.
Glyphosate-free wheat germ & sourced in Japan
Learn what makes Primeadine unique here.
"Lots of you ask about what I take and this is a key essential."
Description
Flexible support, designed for daily life
Primeadine® Original Powder is a premium, whole-food spermidine supplement made from concentrated, glyphosate-free wheat germ extract, sourced in Japan.
Designed for those who prefer a powder format, it integrates easily into your daily routine — from smoothies to breakfast bowls.
Each tub provides a convenient 3-month supply.
Supporting your body’s natural processes
As part of the aging process, cellular maintenance pathways can become less efficient.
Primeadine provides a naturally derived source of spermidine, which has been studied for its role in supporting processes such as autophagy — the body’s way of maintaining cellular health.
The goal is simple: to support the body, not override it.
How it may support you
Customers often report:
• More consistent energy
• Improved sleep quality
• Greater mental clarity
• Healthier-looking skin and hair
These are common signs of a body being supported over time.
Ingredients
Each serving provides 1mg of whole-food spermidine from concentrated, glyphosate-free wheat germ extract, sourced in Japan.
We also defat our wheat germ to remove polyunsaturated fatty acids (PUFAs), helping to maintain stability and quality. When left in, they can go rancid and wreak havoc in your cells.
Other ingredients:
• Corn-derived cluster dextrin
• Sodium citrate
Allergens:
Contains wheat (approx. 40mg gluten per serving).
Suggested use
Dosage: 2 level scoops per day (scoop included inside).
Mix into food or drink below 40°C (104°F), such as:
- Smoothies
- Yogurt
- Shakes
- Breakfast bowls
First time use: Start with 1 level scoop daily for 5 consecutive days. If well tolerated, increase to 2 scoops per day on the sixth day.
Who's it for
Designed for those who want to:
- Take a proactive approach to healthy aging
- Support energy, clarity, and overall wellbeing
- Integrate supplementation into food-based routines
- Use formulations grounded in science and quality
Important information
Contains concentrated wheat germ, so it's unsuitable for those with Celiac disease, wheat allergies, or those on Autoimmune Paleo, Carnivore, or Lectin-free diets. Consult your healthcare provider if unsure.
For a gluten-free option, try Primeadine GF.
Allergens: Wheat and gluten.
Free from
- Fillers, flow agents, and artificial additives
- Soy, lactose, or sugar
- PUFAs (polyunsaturated fatty acids)
- Heavy metals, pesticides (including glyphosate) and other contaminants
Quality & testing
Laboratory report number: 26053672001-0101
Sample received: 4 June 2026
Certificate issued: 18 June 2026
Independently tested for purity: Every batch of Primeadine Original Powder is tested by Japan Food Research Laboratories, a laboratory accredited by the Japanese government, based in Shibuya-ku, Tokyo. These results come from report No. 26053672001-0101, sampled 4 June 2026 and issued 18 June 2026.
Spermidine content: 130 mg per 100g. Spermine: 35 mg per 100g. Putrescine: 21 mg per 100g.
Heavy metals: none detected.
Microbiological safety: aerobic plate count came in at not more than 300 per gram. Coliform bacteria, mold, yeast, coagulase-positive staphylococci, and salmonella all tested negative.
The raw Primeadine extract used in this product (Lot R-522) is separately certified for purity, meeting specification for polyamine content, heavy metals, and microbiological quality, with a three-year guarantee period when sealed and stored in a cool, dry, dark place.
View the Primeadine Original Powder Certificate of Analysis
Your Primeadine journey
Healthy aging starts from within
The most important work happens beneath the surface. Spermidine has been shown to support autophagy, cellular renewal and target the hallmarks of aging. Alongside this emerging science, Primeadine customers report improvements in energy, mental clarity, sleep, skin and hair.
- 01
Weeks 1–4
The Science of Cellular Renewal
Spermidine has been shown to stimulate autophagy, a natural process that helps cells break down and recycle damaged components. This cellular housekeeping is an essential part of maintaining healthy cell function.
- 02
Weeks 5–8
Mitochondrial Health & Energy
Autophagy helps maintain mitochondrial quality by clearing damaged cellular components. These processes are closely linked to energy metabolism. Some Primeadine customers also report improvements in energy, mental clarity, and sleep.
- 03
Weeks 9–12
Cellular Health, Skin & Hair
Cellular maintenance plays an important role in tissue health. Spermidine has been shown to inhibit the processes involved in cellular aging, while some customers report improvements in skin, hair and overall wellbeing.
- 04
Weeks 12+
The Hallmarks of Aging
Spermidine has been studied for its ability to target many of the hallmarks of aging, such as stem cell and mitochondrial dysfunction, telomere shortening, and loss of proteostasis. These interconnected processes play an important role in how our cells function as we age.
Compare
How Primeadine Original Powder compares
| Feature | Primeadine Original Powder | Synthetic spermidine |
|---|---|---|
| Source | Concentrated, defatted Japanese wheat germ | Spermidine trihydrochloride, made in a lab |
| Polyamines | Spermidine, spermine, putrescine | Spermidine only |
| Testing | Every batch, in Japan and the USA | Varies by brand |
As seen in
New York Post
Tatler
Why it matters
Your cells slow their clean-up as you age
Spermidine is found in every living cell. Your body makes plenty when you're young, and levels decline with age. Less spermidine means less autophagy, the process your cells use to clear out and recycle worn-out parts.
Primeadine replenishes spermidine from food, to support your body's own renewal. It's designed for people who want to:
Designed for those who want to:
- Take a proactive approach to healthy aging
- Support energy, clarity, and overall wellbeing
- Integrate supplementation into food-based routines
- Use formulations grounded in science and quality
“Aging is not something to be feared, but embraced.”
Leslie Kenny, Founder and CEO, Oxford Healthspan
Customer stories
What customers notice
"Happy Primeadine subscriber"
The taste of the powder is delicious and mixes equally well with savoury or sweet. I take mine on the morning with yoghurt. I often take it straight off the spoon. I've noticed a slight difference in the volume of my hair. The customer service is good and a real person responds to emails. Not AI. This is important to me.
I can honestly say that my energy levels are so much better than before. I sleep well, wake up feeling refreshed after a restful sleep and am ready to take on any challenges that face me.
My gut health has improved significantly, with general energy levels boosted and better sleep. All told I definitely feel that a good few years have been taken off.
My deep sleep increased 30-45 mins. I had to go off for a month and noticed a corresponding decrease in deep sleep after. And obviously everything is better with quality sleep so I highly recommend this to everyone - love it.
Video reviews
Hear it from them
The science
Spermidine, explained
Autophagy was shown to be a regulated process by Japanese scientist Yoshinori Ohsumi, whose work won the 2016 Nobel Prize in Physiology or Medicine.
Dive into the scienceWhat is spermidine?
A naturally occurring polyamine found in every living cell. It supports the body's natural cellular maintenance processes, including autophagy. Your body makes spermidine, but levels tend to decline with age.
What is autophagy?
From the Greek for "self-eating". Your cells identify, break down and recycle damaged components. It's one of the body's main renewal processes, and its role in healthy aging is well established.
Food-derived or synthetic: does it matter?
Food-derived spermidine comes in a whole-food matrix alongside related compounds that are part of the body's polyamine system. Synthetic spermidine is made in isolation, and research into its long-term use in humans is still limited.
What does the research suggest?
Spermidine has been studied for its role in cellular renewal, cognitive and cardiovascular health, hair, skin and nails, energy and sleep. Individual experiences vary.
Ingredients
One whole-food ingredient doing the work
Each serving provides 1mg of whole-food spermidine from concentrated wheat germ extract, sourced in Japan.
We also defat our wheat germ to remove polyunsaturated fatty acids (PUFAs), helping to maintain stability and quality. When left in, they can go rancid and wreak havoc in your cells.
Other ingredients:
• Corn-derived cluster dextrin
• Sodium citrate
Allergens:
Contains wheat (approx. 40mg gluten per serving).
- Fillers, flow agents, and artificial additives
- Soy, lactose, or sugar
- PUFAs (polyunsaturated fatty acids)
- Heavy metals, pesticides (including glyphosate) and other contaminants
Why Oxford Healthspan
How we make Primeadine
Primeadine® undergoes rigorous third party testing, both in the Japan (which has the strictest food quality and safety standards in the world) and in the USA. Every batch of Primeadine is independently tested in Japan and the USA for heavy metals and microbiological safety.
Tested in two countries
Batches are independently tested in Japan and the USA.
Sourced in Japan
Japan has some of the strictest food quality and safety standards in the world.
Food-derived
Spermidine never occurs alone in nature. Primeadine Original keeps its companions, spermine and putrescine.
Linked to Nobel-winning research
We're the only non-Japanese company collaborating with Yoshinori Ohsumi and his team.
Our advisers
Guided by scientists and clinicians
Our international network of advisers spans physiology, immunology, longevity science and clinical nutrition. Many are affiliated with the University of Oxford.
Amy Lamotte
Clinical nutritionist specializing in personalised nutrition and immune health.
Prof Denis Noble
University of Oxford. Emeritus Professor of Physiology and pioneer in systems biology.
Dr Ghada Alsaleh
University of Oxford. Researcher in immunology and autophagy, focused on aging and immune function.
Dr Katja Simon
Max Delbrück Center, Berlin. Leads research into autophagy in the immune system.
Dr Paul Ch'en
University of Oxford college GP and co-founder of the Oxford Longevity Project.
Dr Sandra Kaufmann
Longevity doctor and researcher with a background in cellular biology and aging.
Your routine
Two scoops a day
Dosage: 2 level scoops per day (scoop included inside).
Mix into food or drink below 40°C (104°F), such as:
- Smoothies
- Yogurt
- Shakes
- Breakfast bowls
First time use: Start with 1 level scoop daily for 5 consecutive days. If well tolerated, increase to 2 scoops per day on the sixth day.
From our founder
Meet Leslie Kenny
Leslie Kenny is a Harvard-educated entrepreneur and Oxford-based longevity expert. Oxford Healthspan began with her own health crisis, and the science that answered it.
Practitioners and biohackers
Recommended by people who study aging
"The best spermidine supplement on the market."
"It's a staple in my supplement stack!"
"Primeadine is an exceptional quality spermidine that I use in many protocols."
"There is no question that spermidine is a crucial component to any longevity program."
"Primeadine by Oxford Healthspan is my go-to spermidine supplement."
Customers often report
What daily Primeadine supports
FAQ
Questions, answered
Our Oxford-based customer support team is available Monday to Friday. Email support@oxfordhealthspan.com or call +1-469-465-8886.
What is spermidine?
Spermidine is a naturally occurring compound known as a polyamine, found in every living cell. It plays a role in supporting the body’s natural cellular maintenance processes, including autophagy, which helps cells renew and function optimally.
While the body can produce spermidine, levels tend to decline with age.
What is autophagy?
Autophagy, from the Greek meaning "self-eating," is the process by which your cells identify, break down, and recycle damaged components. It is one of the body's most elegant and powerful renewal mechanisms, and its role in healthy aging is now firmly established in science.
The discovery of autophagy as a regulated biological process was made by Japanese scientist Yoshinori Ohsumi, whose work earned him the Nobel Prize in Physiology or Medicine in 2016.
Oxford Healthspan is proud to be the only non-Japanese company collaborating with Ohsumi and his team, bringing that pioneering research to the heart of everything we make.
What's the difference between food-derived and synthetic spermidine?
The key difference lies in how spermidine is delivered and how the body may utilise it.
Food-derived spermidine
Occurs naturally within a whole-food matrix alongside related compounds, including other polyamines such as spermine and putrescine. These naturally co-occurring compounds are part of the body’s polyamine system and may support how spermidine is processed and utilised.
Synthetic spermidine
Is produced in isolation and does not come with this natural matrix. Research into long-term use in humans is still limited compared to food-derived sources.
Why this matters
In whole foods, nutrients exist within a complex structure that can influence absorption and biological activity. Food-derived spermidine reflects this natural context.
What are the benefits of spermidine?
Spermidine has been studied for its role in supporting cellular health and healthy aging. Research suggests it may contribute to:
- Cellular renewal processes such as autophagy
- Cognitive and cardiovascular health
- Hair, skin, and nail health
- Energy, sleep quality, and overall wellbeing
Many of these effects are linked to its role in supporting the body’s natural maintenance pathways.
Individual experiences vary, but customers often report improvements in energy, sleep, and visible signs of vitality over time.
What makes Primeadine® superior to other spermidine supplements?
Primeadine® is built around quality, simplicity, and scientific integrity.
- Food-derived spermidine, not synthetically enriched
- Developed alongside scientific advisors, including researchers connected to Oxford
- Third-party tested for purity and potency in both Japan and the USA
- Ingredients sourced from Japan, known for rigorous quality standards
- Free from unnecessary fillers, flow agents, and additives
- Carefully tested for contaminants such as heavy metals and pesticides
Each batch is produced to ensure consistency, purity, and quality.
What's the best spermidine dose to take?
One serving provides 1 mg of food-derived spermidine, consistent with levels used in scientific research.
Individual needs vary. If unsure, consult your healthcare provider before adjusting your intake.
How long does it take to notice results?
Primeadine® works by supporting natural cellular processes, which take time.
While activity begins at a cellular level from the outset, many customers report noticing more meaningful changes after 3 to 6 months of consistent use.
Benefits tend to build gradually with daily use.
What's the difference between Primeadine Original and GF?
Both formulas deliver whole-food spermidine sourced in Japan. They differ in source, dose and what our community mentions most.
Primeadine Original comes from defatted Japanese wheat germ and provides 1mg of spermidine per 3-capsule serving. Customers most often mention hair, skin and nails. It contains a trace of gluten (40mg), so it isn't suitable for anyone with celiac disease or gluten intolerance.
Primeadine GF comes from Okinawan chlorella, with lime peel and turmeric, and provides 1.2mg per 4-tablet serving. It's fully gluten-free, and customers most often mention sleep. It contains iron and vitamin K2, so it isn't suitable for anyone with hemochromatosis or taking blood-thinning medication.
Take either at your first or last meal of the day. If you're unsure, choose based on dietary needs first, then the benefit that matters most to you.
Reviews
What customers say
- CMSVerified ReviewerAge Range 65+Gender FemaleWellness Concern Hair loss, Sleep, Energy levels, Cognition, Aging wellThe Pros Easy to use, Clean ingredients, Science behind the product, Positive results2 months agoAge Range 65+Gender FemaleWellness Concern Hair loss, Sleep, Energy levels, Cognition, Aging wellThe Pros Easy to use, Clean ingredients, Science behind the product, Positive resultsReviewingPrimeadine® Original Whole-Food Spermidine Supplement - 1 Bottle / 30 Day SupplyRated 4 out of 5 starsBetter sleep-more consistent energy
After first 60 days on Primeadine, I can attest to better, deeper sleep and a more consistent level of energy throughout the day for a senior adult. Memory and recall seems improved some too. Looking forward to hair-skin-nails improvements. Would prefer less than 3 pills to take, but so far not had any problems digesting them or having bad side effects. I take them every morning.
- Jeff R.Verified ReviewerAge Range 65+Gender MaleWellness Concern Sleep, Energy levels, Cognition, Aging well, Overall HealthThe Pros Easy to use, Clean ingredients, Speed of action, Science behind the product, Positive results2 months agoAge Range 65+Gender MaleWellness Concern Sleep, Energy levels, Cognition, Aging well, Overall HealthThe Pros Easy to use, Clean ingredients, Speed of action, Science behind the product, Positive resultsReviewingPrimeadine® Original Whole-Food Spermidine Supplement - 1 Bottle / 30 Day SupplyRated 5 out of 5 starsLife Affirming Addition
I’ve just recently begun my fifth month on Primeadine Original and after about one to one and a half months, I have noticed that I have a lot more energy and I’m sleeping much better.
I wake up refreshed and energized every morning and don’t need to take naps during the afternoon much at all anymore, and I’m 75, but feel more like 35 now.(That’s right, 75 is the new 35😊)
And I would have to say that my skin and hair do seem healthier after over four months on the original formula.
I always look forward to taking my Primeadine every morning because I know it’s leading me down the right path based on how good I feel now.
And I have also noticed that my cognition seems to be greatly improved.
I would also note that Leslie Kay from Oxford Healthspan has always been very helpful and joy to speak with.
- MBVerified BuyerAge Range 65+Gender FemaleWellness Concern Aging well, CognitionThe Pros Easy to use, Science behind the product, Positive results2 months agoAge Range 65+Gender FemaleWellness Concern Aging well, CognitionThe Pros Easy to use, Science behind the product, Positive resultsReviewingPrimeadine® Original Whole-Food Spermidine Supplement - 1 Bottle / 30 Day SupplyRated 5 out of 5 starsDecidedly one of my basics since January 2022
In writing this review I am aware of how many various food supplements I have taken over my lifetime and how over the last few years how many I have actually eliminated from my daily regime; Primeadine though, is certainly not one of them. I am sincerely grateful for the quality of the product and the exceptional customer service. Can I say exactly what benefits I have experienced over the last four and a half years since starting with the product? I am a 74-year-old female, still regularly hiking up mountains, sleeping well, with very few aches or pains, continuing to wake up each day with clarity of mind, and deep gratitude for a wondrously consistent sense of vitality and enthusiasm for life. I would be very hard pressed to stop taking Primeadine as one of my essential dietary foundations.
- Kaye"Verified BuyerAge Range 45 - 54Gender FemaleWellness Concern Hair loss, Skin Health, Cognition, Overall Health, Aging well3 months agoAge Range 45 - 54Gender FemaleWellness Concern Hair loss, Skin Health, Cognition, Overall Health, Aging wellReviewingPrimeadine® Original Whole-Food Spermidine Supplement - 1 Bottle / 30 Day SupplyRated 5 out of 5 starsLove Primeadine
I have been taking Primeadine for about 90 days. I believe that my skin and hair looks better. I will continue to use the product to see even better results. Thank you, Leslie!
- Marion F.Verified ReviewerAge Range 65+Gender FemaleWellness Concern Sleep, Aging wellThe Pros Easy to use, Clean ingredients, Positive results3 months agoAge Range 65+Gender FemaleWellness Concern Sleep, Aging wellThe Pros Easy to use, Clean ingredients, Positive resultsReviewingPrimeadine® Original Whole-Food Spermidine Supplement - 1 Bottle / 30 Day SupplyRated 4 out of 5 starsSleep
Even though my overall sleep hasn't improved, I do notice that my body is more relaxed than it used to be.
