Each capsule provides 50 mg of spermidine 3HCl (spermidine trihydrochloride), and each bottle holds 120 capsules. At one capsule a day, a bottle lasts about 120 days. Take it with water; food is optional.
The active ingredient is a manufactured salt of spermidine rather than a wheat germ extract, so the labeled amount is easy to identify and wheat germ is not the source.
A straightforward once-daily routine, with no multi-serving schedule.
Each capsule lists 50 mg of spermidine 3HCl.
One 120-capsule bottle lasts about four months at one capsule a day.
No feeling, symptom or home test confirms that spermidine is having an effect.
Some customers describe changes they notice, others notice nothing in particular. These experiences are not clinical evidence, and there is no proven timeline for autophagy, memory, energy or healthy-aging effects.
This is a dietary supplement. It is not intended to diagnose, treat, cure or prevent any disease.
This product has not been clinically tested to reverse aging, extend lifespan, improve memory or energy, or produce predictable whole-body autophagy.
Food and your own cells already supply some. A supplement adds a fixed daily amount.
In food
24 mg
Wheat germ is one of the richest sources, at about 24 mg per 100 g, followed by soybeans, aged cheese and mushrooms. How much you get depends on what you eat each day.
With age
Your cells make spermidine as well as taking it in from food, and levels in the body tend to decline as people get older.
In your cells
Spermidine takes part in autophagy, the process cells use to break down and recycle worn components. Most of this evidence comes from cell and animal studies; the human research is in Lab & research.
Once a day
50 mg
One capsule gives 50 mg of spermidine 3HCl a day, the same amount whatever you eat. Spermidine Pro is designed to support cellular health and healthy aging.*
Food values are representative published measurements (Ali et al., 2011).
The three products differ in labeled amount, how many you take a day and how long a bottle lasts. They have not been compared in a clinical trial, so pick the one that suits you.
$25 a bottle
$0.42 a day · lasts about 60 days
Suits you if you want the lowest-priced format and are happy taking one tablet in the morning and one in the evening.
$40 a bottle
$0.67 a day · lasts about 60 days
Suits you if you prefer one capsule a day in a liposomal format.
$55 a bottle
$0.46 a day · lasts about 120 days
Suits you if you want a once-daily 50 mg capsule and a bottle that lasts about 120 days.
A subscription, delivered every 3 months. Pause or cancel any time.
30-day money-back guarantee
The liposomal amount describes liposomal spermidine, so it does not compare milligram for milligram with the tablets or Pro. No head-to-head study has shown that one format works better.
One active ingredient at 50 mg, plus four other ingredients. Every ingredient is listed under The complete label.
DECLARED ACTIVE
Spermidine trihydrochloride
Spermidine 3HCl is spermidine in salt form, spermidine trihydrochloride, as listed on the Supplement Facts panel. It is a manufactured ingredient, not a wheat germ extract.
As listed on the Supplement Facts panel.
The amount of spermidine 3HCl is stated directly on the Supplement Facts panel.
The capsule shell is HPMC, a plant-based material.
Wheat is not listed among the ingredients on the label.
01 · Daily servingThe suggested use is one capsule a day. Taking more has not been shown to add benefit.
02 · With waterWith or without food, whichever suits you.
03 · Any timeThe label does not call for morning or evening. A fixed time makes a missed day less likely.
Settle into the routine and notice how the capsule suits you. No sensation shows that it is working.
There is no proven timeline for autophagy, memory, energy or healthy-aging changes.
About 120 days at one capsule a day.
No study has tested spermidine with NMN or resveratrol as a stack. If you combine supplements or take medication, have your full routine reviewed by a healthcare professional.
Not for use by anyone under 18. Do not use if you are pregnant or nursing.
Talk to a healthcare professional first if you take medication, have a medical condition, are under medical care or are preparing for surgery.
A lab report tests one finished batch for the items it lists. Published research studies spermidine in other forms, amounts and people. They are different kinds of evidence, so we keep them apart.
Research has not shown that 50 mg is an optimal amount, that it works better than smaller amounts, or that it reverses aging or extends life. Spermidine dosage guide
Two kinds of evidence
A randomized, double-blind, placebo-controlled study of a high-purity spermidine trihydrochloride found no significant changes in clinical, lipid, chemistry or blood measures, no product-related adverse events, and little change in circulating polyamines. It did not test 50 mg, women, long-term use or this product, and two authors worked for the ingredient’s maker.
Keohane et al., 2024In a randomized crossover study, oral spermidine raised plasma spermine but not plasma spermidine or putrescine. The authors suggest spermidine is converted before it reaches the bloodstream, so a larger oral amount does not mean proportionally more spermidine in the blood.
Senekowitsch et al., 2023A randomized, placebo-controlled pilot after a third SARS-CoV-2 vaccine dose found the supplement well tolerated, with stronger vaccine responses mainly in people who had responded poorly, and more autophagy-related gene activity in B cells. It was small and specific to this setting.
Alsaleh et al., 2026The SmartAge trial tested a spermidine-rich wheat germ extract in adults with subjective cognitive decline. It did not improve the main memory outcome compared with placebo. The ingredient and amount differ from this product.
Schwarz et al., 2022Reviews marked Verified Buyer come from confirmed purchases.
Reviews describe individual experiences. They are not clinical evidence.
Individual results vary. These are customer experiences, not a clinical study.
There is no established dose for spermidine supplements. A controlled study found 40 mg a day of spermidine trihydrochloride well tolerated for up to 28 days in 37 healthy men aged 50 to 70; it did not test 50 mg a day, long-term use, women or this product.
Follow the label, and ask a healthcare professional if you have questions about your health or medication. Spermidine dosage guide
That has not been shown. No human study has compared these amounts, and a higher label strength does not by itself mean better absorption, more autophagy or greater benefit.
No. The label gives the weight of the salt form, spermidine trihydrochloride, and that weight includes the salt as well as the spermidine.
The specification is at least 50 mg of spermidine 3HCl per capsule, and the current batch measured 58 mg. That is one batch’s result; the product’s labeled strength is 50 mg.
About 120 days: 120 capsules at one capsule a day.
One capsule a day, swallowed with water. Food is optional, and any time of day works. Morning and evening have not been shown to make a difference.
There is no proven timeline. Spermidine is not a stimulant, and no sensation shows that it is working.
Spermidine supports autophagy-related activity in cells and animal studies, and a small 2026 human pilot found more autophagy-related gene activity in immune B cells at 6 mg a day. That does not show that this product increases autophagy throughout the body or leads to a particular health outcome.
Yes. The current batch has a certificate of analysis from an ISO/IEC 17025-accredited laboratory, covering spermidine 3HCl potency (measured by HPLC), four heavy metals and microbiological tests. It is linked in Lab results.
The capsule shell is HPMC rather than gelatin, wheat is not listed among the ingredients, and the active is not a wheat germ extract. If you have celiac disease or a severe allergy, ask us for the full allergen documentation before use.
No study has tested spermidine, NMN and resveratrol as a stack. If you combine several supplements or take prescription medication, have your full routine reviewed by a healthcare professional.
It is not for anyone under 18, and should not be used during pregnancy or nursing. Talk to a healthcare professional before use if you take medication, have a medical condition, are under medical care or are preparing for surgery.
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*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Not for use by persons under 18. Do not use if pregnant or nursing. Consult a healthcare professional before using this or any dietary supplement.
