Sulforaphane side effects


David Tomen
David Tomen
13 minute read
Sulforaphane is known for helping with autism, recovery from Traumatic Brain Injury (TBI), preventing the progression of Alzheimer’s and Parkinson’s, and is anti-cancer

 Sulforaphane (1-isothiocyanato-4-methylsulfinylbutane, SFN) belongs to the isothiocyanate class of phytochemicals.

The isothiocyanate group of organosulfur compounds means it contains sulfur. Sulfur is vital to your health. And is one of the most abundant minerals in your body and brain.

Sulfur is required for the synthesis of essential amino acids such as cysteine and methionine needed to produce your master antioxidant glutathione.

Sulforaphane protects your brain from oxidative stress and inflammation resulting in less anxiety, depression, and brain fog.

Sulforaphane has been shown to improve behavior in people with autism, including social interaction, abnormal behavior, and verbal communication.[i]

It plays a role in protecting your brain from Alzheimer’s disease and Parkinson’s disease.[ii] [iii] And has been shown to boost cognitive function and support healthy recovery from Traumatic Brain Injury (TBI).[iv]

Sulforaphane has been found to prevent the formation of cancer cells by supporting a healthy cell life cycle (apoptosis). And by preventing and reducing inflammation.

And has been shown to benefit people with diabetes, rheumatoid arthritis, and gastric problems.

Here you will discover how Sulforaphane is used as a nootropic for optimal brain heath.

 Sulforaphane helps:

  • Oxidative stress: Sulforaphane protects your cells from free-radical damage. When free radicals get out of balance with antioxidants in your body, it causes oxidative stress. Oxidative stress is elevated in several neurodegenerative diseases including autism. Sulforaphane is a powerful antioxidant that helps clean up free radicals and helps maintain a healthy brain.[v]
  • Neuroprotectant: Sulforaphane also protects against cell degeneration that causes diseases like Alzheimer’s, Parkinson’s, and multiple sclerosis. By acting as an antioxidant, anti-inflammatory, and anti-apoptotic (healthy brain cell cycle).[vi]
  • Anti-inflammatory: Inflammation can cause brain fog, depression, anxiety, irritability and more. Long-term inflammation can lead to neurodegenerative disease. Sulforaphane acts as an anti-inflammatory. Reducing and preventing brain inflammation.


Sulforaphane (1-isothiocyanato-4-methylsulfinylbutane, SFN) is a potent phytochemical. Phyto is the Greek word for plant. In other words, Sulforaphane is a phytochemical made by plants.

Sulforaphane supplementSulforaphane is found in cruciferous vegetables such as cabbage, kale, cauliflower, and radishes in the form of glucoraphanin and myrosinase. But it’s most plentiful in broccoli.

Sulforaphane is synthesized in your gut through a hydrolysis reaction that involves the enzyme myrosinase and glucoraphanin.

Sulforaphane is needed to ensure your body gets enough sulfur. A mineral critical for the synthesis of cysteine and methionine which are needed to produce your master antioxidant glutathione.

Sulforaphane is one of the most frequently studied plant-derived isothiocyanate organosulfur compounds. And has been reported to provide a wide range of effects. It is antioxidant, anti-inflammatory, antimicrobial, anticancer, anti-aging, neuroprotective, and antidiabetic.[vii]

A major area of research on Sulforaphane is its effect on autism. Studies have shown that Sulforaphane improves behavior in young people with autism.[viii]

Sulforaphane can help reduce cognitive impairment associated with Alzheimer’s disease. It helps prevent potential damage that can be caused by the β-Amyloid aggregation associated with Alzheimer’s and Parkinson’s.[ix]

Sulforaphane easily crosses the blood-brain barrier.  And is a powerful defense against oxidative stress and neuronal damage caused by traumatic brain injury (TBI).[x]

Studies show that if Sulforaphane is taken within one hour of traumatic brain injury it will improve spatial learning and memory and reduce working memory dysfunction.[xi]

Studies have also found that Sulforaphane may protect against changes in gene expression that if left unchecked could lead to prostate cancer progression.[xii]

GlucoraphaninHow does Sulforaphane Work in the Brain?

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

  1. Sulforaphane reduces oxidative stress.

Mitochondrial dysfunction has been associated with the accumulation of Reactive Oxygen Species (ROS) within cells, which, when not properly scavenged, may lead to oxidative stress.

Your immune system is designed to produce enzymes that scavenge ROS which prevents oxidative stress.

Immune system dysfunction has been observed in autism spectrum disorder (ASD). And high levels of ROS which causes oxidative stress are present in those with autism.[xiii]

Sulforaphane boosts your body’s antioxidant defense mechanism, which protects against oxidative stress and maintains normal and healthy cellular function.

Those with ASD who boost their intake of Sulforaphane show improvement in social communication, unusual behavior, and self-regulation behavior.

  1. Sulforaphane is anti-aging.

Neurological disorders are the leading cause of death and disability worldwide.  And most of these disorders share mutual causes such as oxidative stress, mitochondrial dysfunction, neuroinflammation, protein misfolding, ecotoxicity, and neuronal damage.

All these disorders are common targets of the nuclear factor erythroid 2 related factor 2 (Nrf2) signaling cascade.

Nrf2 is the main regulator of redox balance and cellular detox responses and stimulates your cellular defense mechanism.[xiv]

And Nrf2 blocks oxidative stress and production of reactive oxygen species (ROS).

Sulforaphane protects against these neurological disorders by regulating the Nrf2 pathway. [xv]

So, using Sulforaphane as nootropic supplement, you get the anti-aging protection against oxidative stress, which if left unchecked can lead to Alzheimer’s, Parkinson’s, multiple sclerosis, and other neurodegenerative diseases.[xvi]

How things go bad

Sulfur is the 3rd most abundant mineral in your body. You need sulfur to build and repair your DNA. And for healthy skin, ligaments, and tendons. And sulfur protects your cells from oxidative stress.

Sulforaphane benefitsSulforaphane from your diet or as a nootropic supplement provides the sulfur you need to maintain healthy cognitive function. Providing ongoing protection against neurodegenerative diseases such as Alzheimer’s disease, Parkinson’s disease, and multiple sclerosis.

If you do not consume Sulforaphane, it can be difficult to get enough sulfur.

Putting yourself at risk for:

↓ Low levels of antioxidants which lead to free radical damage

↓ Poor signaling of antioxidant defense systems

↓ Decreased cognitive function

↑ Increase risk for neurodegenerative disease

↑ Increased oxidative stress

↑ Increased inflammation

↑ DNA damage

Supplementing with Sulforaphane can help maintain healthy brain function throughout your life.

Sulforaphane benefits

Turns out that when your mother told you to eat your broccoli, she was right!

Sulforaphane can protect your brain from oxidative stress that if left unchecked can lead to Alzheimer’s or Parkinson’s.

GlucosinolatesSulforaphane acts as an antioxidant which help scavenge free radicals and support a healthy immune system. And has the potential to improve some domains of cognitive function in patients with schizophrenia.

Sulforaphane is used by men worldwide to protect against and even reverse prostate cancer. And its anti-cancer functions are now recognized as effective for possibly preventing other types of cancer as well.[xvii]

Sulforaphane has been shown to provide protection against ultraviolet (UV)-induced skin damage making it an anti-aging compound. And has potential for use in anti-aging drugs and cosmetics.[xviii]

And studies have demonstrated the use of Sulforaphane for providing protection from Traumatic Brain Injury (TBI). And is a potential candidate for therapy for Traumatic Spinal Cord Injury.[xix]

How does Sulforaphane feel?

Neurohackers report feeling energized when they take Sulforaphane. People who have been diagnosed as pre-diabetic say it helps them feel less fatigued, more energetic.

Others say using Sulforaphane as a nootropic helps their mental health. They feel an improvement in their overall feeling of wellbeing.

Many people say that Sulforaphane boosts cognitive function. They say it helps them think more clearly.

Parents of autistic children report that Sulforaphane helps their children stay calm and focused. They report improved behavior.

People with rheumatoid arthritis report that their symptoms are reduced when they consistently use Sulforaphane as a nootropic.

Sulforaphane also offers better gastric health. Some people report that it provides relief from the symptoms of GERD/acid reflux.

Neurohackers with traumatic brain injury say Sulforaphane helps reduce their feelings of anxiety.

And most report that taking Sulforaphane as a nootropic supplement is a great alternative if you don’t like eating broccoli or Brussels sprouts!

broccoli sprout extractSulforaphane Clinical Research

Hundreds of clinical studies have been conducted with Sulforaphane. Researchers found benefits that range from improvement in autism symptoms to cancer prevention. And from improvement of Alzheimer’s symptoms to the reduction of diabetic complications.

Here are three conditions that Sulforaphane has been clinically shown to benefit.

Sulforaphane for autism

A clinical trial done by researchers in Massachusetts showed that Sulforaphane improved behavior in young men with autism spectrum disorder (ASD).

In a placebo-controlled, double-blind, randomized trial, 29 young men (aged 13-27) with moderate to severe ASD received Sulforaphane derived from brussel sprouts or a placebo daily for 18 weeks.

Parents and caregivers evaluated their behavior using the Aberrant Behavior Checklist (ABC) and Social Responsiveness Scale (SRS). Study doctors evaluated them using the Clinical Global Impression Severity scale (CGI-S).

The young men who received Sulforaphane showed a substantial improvement in behavior.

There was a 34% improvement on the ABC, and a 17% improvement on the SRS. Using the CGI-I measure, 46% showed significant improvement on social interaction. 54% on aberrant behavior. And 42% on verbal communication.[xx]

In another study, the same researchers looked at 57 children with ASD, aged three to 12 years old. 28 children were given Sulforaphane for 15 weeks, followed by no treatment for six weeks. The other 29 children received a placebo.

Researchers in this study found that Sulforaphane improved the behavior of children using the ABC measure. But improvement on the SRS measure was not as dramatic as in the first study. They didn’t measure the CGI-I in the second study.

The researchers pointed out that Sulforaphane is very safe. And has been shown to lower oxidation levels, improve antioxidant action in the body, increase glutathione production, and lower neuroinflammation. All abnormalities that are associated with autism.

Researchers concluded that Sulforaphane shows promise for helping people with autism. [xxi]

Sulforaphane for Alzheimer’s

Researchers are starting to propose human trials for Sulforaphane’s effect on Alzheimer’s disease. They haven’t been completed yet. But several studies involving animal subjects have been done.

In one study, 48 mice were divided into three groups. One control group, one group with Alzheimer’s disease (AD), and one group with AD being treated with Sulforaphane.

The Alzheimer’s group receiving Sulforaphane had lower levels of harmful β-Amyloid deposits in their brain. They also had higher levels of glutathione peroxidase that helps protect the brain from free radical damage.

The mice treated with Sulforaphane had better performance in a water maze and open field test. This showed that their brains were functioning better than the mice who didn’t get Sulforaphane.

Researchers concluded that Sulforaphane should be considered for use in preventing Alzheimer’s disease. And in therapy for those who already have it.[xxii]

Sulforaphane helps prevent cancer

The diagnosis of prostate cancer has increased because of increased PSA testing and an aging population. And up to 48% of cases may exhibit PSA progression after a subsequent follow up exam.

But because of the risks associated with cancer treatment many men choose a program of “active surveillance” until there is evidence of cancer progression.

The problem is there is no medical intervention for men who have chosen active surveillance that could reduce their risk for cancer progression.

Thankfully, we have a natural solution that is proving to be highly effective. And that solution uses natural nootropic supplements like Sulforaphane.

A study called the Effect of Sulforaphane on Prostate CAncer PrEvention (ESCAPE) was a randomized, double-blinded 3-arm parallel trial conducted in the UK.

The study looked at how Sulforaphane affects prostate cancer. In this study involving 49 patients, they gave broccoli soup to men with low-risk or intermediate-risk prostate cancer.

Patients were split into three groups. All groups were required to eat 300 mL of broccoli soup every week for 12 months. Broccoli contains high levels of glucoraphanin, which is a precursor to Sulforaphane.

Each group ate soup with a different level of glucoraphanin concentration. Then researchers measured gene expression in biopsied prostate tissue at the beginning of the trial. And at the end of the trial.

A change in gene expression could indicate a progression in cancer development.[xxiii]

Patients in the group that ate the highest levels of glucoraphanin had the healthiest gene expression. And showed higher levels of Sulforaphane in their circulation.

Researchers concluded that Sulforaphane helps reduce the risk of cancer progression. [xxiv]

Sulforaphane Recommended Dosage

Recommended Sulforaphane dosage is 35-60 mg per day.

But Sulforaphane supplements vary so check the label or manufacturer’s website for dosage specific to the supplement you are using.

Sulforaphane Side Effects

Sulforaphane is non-toxic and safe when consumed in its raw form from broccoli, broccoli sprouts, or kale.

Sulforaphane side effectsWhen taken as a nootropic supplement, Sulforaphane has few if any side effects if it’s taken at recommended dosages. More is NOT better and may be toxic.

Sulforaphane rarely causes increased gas, constipation, or diarrhea.

Sulforaphane is safe during pregnancy or breastfeeding when taken from a whole food source. The safety of Sulforaphane as a supplement is not known during pregnancy and breastfeeding so should be avoided.

Sulforaphane is a source of Sulphur so your supplement may smell nasty depending on how it is manufactured.

Type of Sulforaphane to Buy

Sulforaphane is available in tablets, capsules, or powder. Dosage for each capsule varies widely, so read the label to know how many you need to take to get the recommended dose of 35 – 60 mg.

Sulforaphane foodsMany formulations include the enzyme myrosinase. The glucoraphanin in broccoli combines with myrosinase in your gut to form Sulforaphane.

TrueBroc® is patented form of Glucoraphanin extracted from broccoli seeds using a hot water process. This patented Sulforaphane supplement is manufactured in Baltimore and licensed to supplement manufacturers for use in their product.

Avmacol® by Nutramax Laboratories is a patented broccoli seed extract (Glucoraphanin) & Myrosimax® (active Myrosinase enzyme) which when digested produces Sulforaphane in your gut. Manufactured in Maryland and licensed to major supplement manufacturers.

BrocColinate® by Numedica uses a patented CO2 extraction method to get Sulforaphane Glucosinolate from broccoli with added Myrosinase which is a key enzyme needed to convert Sulforaphane Glucosinolate into Sulforaphane in your small intestine.

Nootropics Expert® Recommendation

Nootropics Expert Tested and ApprovedSulforaphane 35-60 mg per day

I recommend using Sulforaphane as a nootropic supplement.

Your body does not make Sulforaphane on its own. You can get glucoraphanin from cruciferous vegetables or a nootropic supplement so your body can synthesize Sulforaphane using the enzyme myrosinase.

Sulforaphane plays a powerful role in cell detoxification and the regulation of a healthy antioxidant defense system.

Sulforaphane may be especially helpful in you are dealing with autism.

Sulforaphane provides antioxidant, anti-inflammatory, antimicrobial, anticancer, anti-aging, and antidiabetic benefits.

Sulforaphane as a nootropic boosts cognition, helps support recovery from traumatic brain injury (TBI), and helps regulate mood.

Sulforaphane protects against neurodegenerative diseases such as Alzheimer’s and Parkinson’s. And helps prevent cancer cell growth.

It’s safe to use 35 – 60 mg of Sulforaphane per day.

But some labels may be confusing because it will include much higher doses of the precursor glucoraphanin which makes Sulforaphane.

So always check the label for dosage recommendations from the manufacturer of the supplement.

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] Singh, K., Connors, S. L., Macklin, E. A., Smith, K. D., Fahey, J. W., Talalay, P., & Zimmerman, A. W. (2014). Sulforaphane treatment of autism spectrum disorder (ASD). Proceedings of the National Academy of Sciences of the United States of America, 111(43), 15550–15555. (source)

[ii] Kim J. (2021). Pre-Clinical Neuroprotective Evidences and Plausible Mechanisms of Sulforaphane in Alzheimer’s Disease. International journal of molecular sciences, 22(6), 2929. (source)

[iii] Vauzour, D., Buonfiglio, M., Corona, G., Chirafisi, J., Vafeiadou, K., Angeloni, C., Hrelia, S., Hrelia, P., & Spencer, J. P. (2010). Sulforaphane protects cortical neurons against 5-S-cysteinyl-dopamine-induced toxicity through the activation of ERK1/2, Nrf-2 and the upregulation of detoxification enzymes. Molecular nutrition & food research, 54(4), 532–542. (source)

[iv] Hong, Y., Yan, W., Chen, S., Sun, C. R., & Zhang, J. M. (2010). The role of Nrf2 signaling in the regulation of antioxidants and detoxifying enzymes after traumatic brain injury in rats and mice. Acta pharmacologica Sinica, 31(11), 1421–1430. (source)

[v] Guerrero-Beltrán, C. E., Calderón-Oliver, M., Pedraza-Chaverri, J., & Chirino, Y. I. (2012). Protective effect of sulforaphane against oxidative stress: recent advances. Experimental and toxicologic pathology: official journal of the Gesellschaft fur Toxikologische Pathologie, 64(5), 503–508. (source)

[vi] Schepici, G., Bramanti, P., & Mazzon, E. (2020). Efficacy of Sulforaphane in Neurodegenerative Diseases. International journal of molecular sciences21(22), 8637. (source)

[vii] Kim, J. K., & Park, S. U. (2016). Current potential health benefits of sulforaphane. EXCLI journal, 15, 571–577. (source)

[viii] Singh, K., Connors, S. L., Macklin, E. A., Smith, K. D., Fahey, J. W., Talalay, P., & Zimmerman, A. W. (2014). Sulforaphane treatment of autism spectrum disorder (ASD). Proceedings of the National Academy of Sciences of the United States of America111(43), 15550–15555. (source)

[ix] Kim, H. V., Kim, H. Y., Ehrlich, H. Y., Choi, S. Y., Kim, D. J., & Kim, Y. (2013). Amelioration of Alzheimer’s disease by neuroprotective effect of sulforaphane in animal model. Amyloid : the international journal of experimental and clinical investigation : the official journal of the International Society of Amyloidosis20(1), 7–12. (source)

[x] Hong, Y., Yan, W., Chen, S., Sun, C. R., & Zhang, J. M. (2010). The role of Nrf2 signaling in the regulation of antioxidants and detoxifying enzymes after traumatic brain injury in rats and mice. Acta pharmacologica Sinica31(11), 1421–1430. (source)

[xi] Dash, P. K., Zhao, J., Orsi, S. A., Zhang, M., & Moore, A. N. (2009). Sulforaphane improves cognitive function administered following traumatic brain injury. Neuroscience letters460(2), 103–107. (source)

[xii] Traka, M. H., Melchini, A., Coode-Bate, J., Al Kadhi, O., Saha, S., Defernez, M., Troncoso-Rey, P., Kibblewhite, H., O’Neill, C. M., Bernuzzi, F., Mythen, L., Hughes, J., Needs, P. W., Dainty, J. R., Savva, G. M., Mills, R. D., Ball, R. Y., Cooper, C. S., & Mithen, R. F. (2019). Transcriptional changes in prostate of men on active surveillance after a 12-mo glucoraphanin-rich broccoli intervention-results from the Effect of Sulforaphane on prostate CAncer PrEvention (ESCAPE) randomized controlled trial. The American journal of clinical nutrition, 109(4), 1133–1144. (source)

[xiii] Pangrazzi, L., Balasco, L., & Bozzi, Y. (2020). Oxidative Stress and Immune System Dysfunction in Autism Spectrum Disorders. International journal of molecular sciences21(9), 3293. (source)

[xiv] Dhakshinamoorthy, S., & Jaiswal, A. K. (2001). Functional characterization and role of INrf2 in antioxidant response element-mediated expression and antioxidant induction of NAD(P)H:quinone oxidoreductase1 gene. Oncogene20(29), 3906–3917 (source)

[xv] Schepici, G., Bramanti, P., & Mazzon, E. (2020). Efficacy of Sulforaphane in Neurodegenerative Diseases. International journal of molecular sciences21(22), 8637 (source)

[xvi] Santín-Márquez, R., Alarcón-Aguilar, A., López-Diazguerrero, N.E. et al. Sulforaphane – role in aging and neurodegeneration. GeroScience 41, 655–670 (2019). (source)

[xvii] Clarke, J. D., Dashwood, R. H., & Ho, E. (2008). Multi-targeted prevention of cancer by sulforaphane. Cancer letters269(2), 291–304 (source)

[xviii] Kim, J. K., & Park, S. U. (2016). Current potential health benefits of sulforaphane. EXCLI journal, 15, 571–577. (source)

[xix] Benedict, A. L., Mountney, A., Hurtado, A., Bryan, K. E., Schnaar, R. L., Dinkova-Kostova, A. T., & Talalay, P. (2012). Neuroprotective effects of sulforaphane after contusive spinal cord injury. Journal of neurotrauma29(16), 2576–2586. (source)

[xx] Singh, K., Connors, S. L., Macklin, E. A., Smith, K. D., Fahey, J. W., Talalay, P., & Zimmerman, A. W. (2014). Sulforaphane treatment of autism spectrum disorder (ASD). Proceedings of the National Academy of Sciences of the United States of America111(43), 15550–15555. (source)

[xxi] Zimmerman, A. W., Singh, K., Connors, S. L., Liu, H., Panjwani, A. A., Lee, L. C., Diggins, E., Foley, A., Melnyk, S., Singh, I. N., James, S. J., Frye, R. E., & Fahey, J. W. (2021). Randomized controlled trial of sulforaphane and metabolite discovery in children with Autism Spectrum Disorder. Molecular autism12(1), 38. (source)

[xxii] Zhang, R., Miao, Q. W., Zhu, C. X., Zhao, Y., Liu, L., Yang, J., & An, L. (2015). Sulforaphane ameliorates neurobehavioral deficits and protects the brain from amyloid β deposits and peroxidation in mice with Alzheimer-like lesions. American journal of Alzheimer’s disease and other dementias, 30(2), 183–191. (source)

[xxiii] Wong, C. P., Hsu, A., Buchanan, A., Palomera-Sanchez, Z., Beaver, L. M., Houseman, E. A., Williams, D. E., Dashwood, R. H., & Ho, E. (2014). Effects of sulforaphane and 3,3′-diindolylmethane on genome-wide promoter methylation in normal prostate epithelial cells and prostate cancer cells. PloS one9(1), e86787 (source)

[xxiv] Traka, M. H., Melchini, A., Coode-Bate, J., Al Kadhi, O., Saha, S., Defernez, M., Troncoso-Rey, P., Kibblewhite, H., O’Neill, C. M., Bernuzzi, F., Mythen, L., Hughes, J., Needs, P. W., Dainty, J. R., Savva, G. M., Mills, R. D., Ball, R. Y., Cooper, C. S., & Mithen, R. F. (2019). Transcriptional changes in prostate of men on active surveillance after a 12-mo glucoraphanin-rich broccoli intervention-results from the Effect of Sulforaphane on prostate CAncer PrEvention (ESCAPE) randomized controlled trial. The American journal of clinical nutrition, 109(4), 1133–1144. (source)

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Join The Discussion - 16 comments

Test user
January 18, 2024

I used 3 days Sulforaphane 400 micro gram from 100mg broccoli extract. I was yesterday in the hospital because of severe abdominal cramps. They found nothing in my blood or with Ultrasonic. I should just take painkillers. Do you think it could have a connection to the sulforaphane?

    David Tomen
    January 18, 2024

    Sulforaphane rarely causes increased gas, constipation, or diarrhea. So yes, there could be a connection. That is a rare side effect but it is possible.

May 29, 2023

Hello David,

BrocElite® from Mara-Lab claims to be the only broccoli supplement on the market offering naturally derived Stabilized Sulforaphane in the capsule.

Nearly all other broccoli supplements contain the precursor molecule to sulforaphane, called glucoraphanin (often confusingly marketed as “sulforaphane glucosinolate”).

I would like to seek your expert comments.

    David Tomen
    June 5, 2023

    Seng, my “expert” comment on this is scroll back up and read the section I wrote called: Type of Sulforaphane to Buy

April 6, 2023

Hi David,
I watched your video and it was very helpful and interesting.
Would you please help me to figure out if this product will work. It looks like it is inexpensive and made in Germany:
Broccoli Capsules – 1000 mg

Thank you

    David Tomen
    April 9, 2023

    Roman, I cannot tell because I do not know the language. Best thing for you to do is see if you can find someone selling a supplement containing one of the patented forms of Sulforaphane I show in the “Where to buy” section above.

January 31, 2023

Hi David how are you?,
I just wanted to know if this brand is a good option to get Sulforaphane?,
it has 3 times more quantity than Avmacol®, which makes it much cheaper
Avmacol has 30mg of Glucoraphanin, and Oncoprotect ES with Myrosinase have 100 mg Glucoraphanin.
But I never heard of it, so I would like your opinion without obligation, for having your greater experience
Thank you

Pure Therapro Rx – truebroc 100 mg

    David Tomen
    February 1, 2023

    Billy, Pure Therapro RX is using the other branded form of Sulforaphane called truebroc®. And you are correct that 100 mg is more than 30 mg of AVMACOL®. But it is also twice the price. So either one is a good and effective supplement in my opinion. It just depends on what you can afford.

September 6, 2022

Hello David,
Is this similar to DIM? And, am I wrong in understanding it may also prevent other cancers as well as prostate?
I have stayed away from DIM because of concerns of titanium in my arm and lenses in my eyes from cataract surgery. Both eyes also have Teflon lenses, anaridian lenses. I really would love to try this, if possible.
Thank you.

    David Tomen
    September 7, 2022

    Angela, Sulforaphane and DIM are two very different compounds. And you are correct that Sulforaphane seems to help prevent many forms of cancer.

Robert Long
October 30, 2021

First thank you for this study/report.

Is this to be stacked with things like NAC?

My father has a low stage Prostate Cancer, and I have potential spinal cord issues.

Is this Nootropic in your book?

    David Tomen
    October 31, 2021

    Robert, I’ve just reviewed Sulforaphane so it is not in Head First or Secrets of the Optimized Brain.

    You can stack this with NAC but the studies for prostate cancer are just with Sulforaphane.

August 28, 2021

Hi David,

Are there any other supplements that you know of that can offer benefits to help support individuals with Asd?

August 18, 2021

Hi David

Any good standalone Sulforaphane to recommend and support you?


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