Black Walnut Hull Herb Profile

Black Walnut Herb Good for digestion parasite removal hair dye

Black Walnut Hull or Juglans Nigra is, just as it sounds, the hull of the black walnut tree. The Black Walnut tree grows in the eastern US and parts of Canada, and while easy to grow, it is not plentiful.

What is Black Walnut?

Black Walnut has been used in herbal medicine for thousands of years. It has been used throughout history for treatment of intestinal problems, snakebites, open wounds, ulcers, scurvy, and as one of the most effective laxatives available. Because of its dark color, the outer hull is also used as a dye and was used in brown hair dye until the early 1900s. Black walnut is a good source of beta-carotene, acids, calcium, iron, magnesium, manganese, phosphorus, potassium, selenium, silicon, zinc, tannin, B-vitamins, and vitamin C.

Today, black walnut hulls are used to help with many conditions. It is known to be a gentle and effective laxative. Black walnut is known as an effective anti-viral and is used to fix warts, which are caused by viruses. Black walnut is an anti-fungus and has been used to fight herpes, cold sores, athlete’s foot, and Candida. It has been used as an antiseptic to combat illness like sexually transmitted infections and malaria and can be used to treat acne.

How it is used:

According to scientific labs:

  • Black Walnut Hull may help to lower blood pressure and serum cholesterol levels and is believed to burn up toxins and fatty materials while balancing blood sugar levels.
  • The tannins in Black Walnut Hull (and leaves) possess an astringent quality that is thought to shrink the sweat glands and reduce excessive sweating.  The herb is said to help control menorrhagia, the excessive loss of blood during periods. It is also used to control diarrhea.
  • Black Walnut Hull is considered a tonic that aids digestion and the intestinal system. It helps to relieve colic, heartburn and flatulence.  As a cholagogue, Black Walnut stimulates the flow of bile into the intestines and is thought to ease bilious colic and pain in the spleen.”

Perhaps Black Walnut’s most well-known property is its ability to fight intestinal parasites. It is a well documented vermifuge that is effective at helping the body rid itself of parasites. As a laxative, it expels parasites as part of its cleansing of the body and the high tannin and juglone content is thought to oxygenate the blood and kill parasites. Black walnut is effective against pinworm, ringworm, tapeworm, and other intestinal parasites.

From Mountain Rose Herbs: “Black walnut hulls contain juglone, a chemical that is antibacterial, antiviral, antiparasitic, and a fungicide. As a skin wash, black walnut hulls are used to treat ringworm and yeast infections of the skin. Taken internally, black walnut hulls are used to treat intestinal worms.”


“Black walnut hulls are safe for occasional use of up to 2 weeks at a time, but black walnut heartwood is not. Avoid herbal remedies which contain heartwood.” (from Mountain Rose Herbs) Black walnut is an extremely potent remedy that should be used under the care of a holistic health professional. Should not be used during pregnancy or illness. Consult your doctor if you have any condition that is severe or lasts longer than a few days.

Ever used black walnut hull? Want to try it out? Share below!

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Reader Comments

  1. Would this be a good herb to use for shingles? What would be the best way to go about using it? externally or internally?

    • If you all REALLY WANT to know what it can be used for: Black Walnut tinctures and parasites or infections or diseases related to overintoxication by parasitic-wastes, ie.shingles, arthritis etc.
      are explained in a book my Mother used to prolong her life for 8 years called:
      “The Cure for All Diseases” Hulga Raeger Clarke I think the author’s name is spelled. My Dad still uses her methods today and he is 82!! (Zapping and Tincture cleanses of the organs)
      Warning: must have self-discipline to use her very long and drawn-out cleanses are for REALLY serious about their health people. Not for the partially-committed lets say.

      • While Hulda Clarke did have a legitimate educational background, she also had some wack-job ideas on natural health and eventually fled the country to Mexico so that she could be out of the reach of the US government after they began to investigate her and the safety of her “zappers” amongst other things.

        We can all live longer lives if we begin to take our health seriously and work to keep ourselves healthier and well. Wellness is not some mysterious goal to be achieved. Our society and capitalistic environment keep us sick and unhealthy because sickness is an economy and makes lots of people rich. Natural health gurus with lots of products for sale can also take advantage of people looking for health and wellness. Research Hulda Clarke before following her protocols, she is not all she’s cracked up to be.

        • We do not live in a capitalistic society but a fascist society controlled by an elite at the top. Socialism and communism are branches of this, so do your homework. True capitalism would not create the horrific situation we are in.

          • Good point. True Capitalism would create wealth for everyone and no one would have any desire to poison anyone else such as the problem with the gmo’s of the (lunatic) elite, or fluoride in the water, or chemicals sprayed into our environment, all for the purpose of trying to control the people for the benefit of some insane few. So yea… Capitalism is different from the elite fascist society that has been pulled over our eyes and peddled as Capitalism. And people would have true information given them, like about nature and the plants that we need to help our bodies, instead of the system we have now, where they hide what’s good for us and manipulate us into taking their poisonous pharmaceuticals which ruin health, and then the folks taking these go back for more pharma for the ill health that the first batch has caused to occur. So, ignorance is not bliss. Let’s turn the table and learn all we can, uncover that which was hidden, and take our planet back from those criminals.

      • Hello, I’m following Hulda Clarks cure for cancer strategy, I love it.I started it with my son in law who had a brain tumor who was told even with removal, chemo & radiation. It would come back and he would be dead by 2 years. Those 2 years are up, my son in law is still cancer free and he follows the maintenance doses to stay well…i follow it simple to feel and be well….wellness is happiness.

  2. My 4 year old has so many warts on his hands. We got rid of them with raw apple cider vinegar, but they are coming back. How would I use this internally to get rid of them for good?

    • I know you can use them externally to get rid of warts. Pick a black walnut while it is still green, cut it open and rub the green meat over the wart. Do this twice a day for about 3 days. This will stain your skin green, but not to worry, it will wash away. Be careful of clothing as I have not figured out how to get rid of that stain. I have gotten rid of my warts in 3 days doing this.

      • Thank you! I will have to wait until this summer when I can get some green black walnuts. Does it hurt the skin around it? Does it work on all types of warts?

        • It just stains the skin for a little while. I have used it on common warts and ringworm. Both still only took about 3 days to get rid of completely.

    • Also good for “viruses” is elderberry juice concentrate.
      (Sorry this is several years later… but hopefully can help someone else?)
      When my kids were little, and in wrestling, they got moluscums – little white pimple looking bumps. I gave them a teaspoon of elderberry in a small glass of orange juice and the moluscums went away within a week and a half. The Dr had said theres not much to do to get rid of them, they would just have to go away themselves and could take up to a year. One had developed them first, but both kids bumps went away at the same time.
      Elderberry is good at fighting viruses in general. Maybe elderberry could also help with the warts, which are also a virus?

    • To use ACV internally; I usually use it to replace normal vinegar, my son will have it on his chips or with any fish I cook. I make Sardines and dip them in vinegar.

    • Sally, have you learned if you can eat the green hull raw and if that helps? I would really like to know. Thanks!!!

    • Black Walnut will not reverse tooth decay as it has nothing to do with calcium utilization in the body. To get prevent or reverse tooth decay, it is essential that one take Vitamin D3, Vitamin A, and Vitamin K2 (mk-7 type). There are 2 types of vitamin K.. the usual and the K2.. the usual K is what body uses for blood coagulation to form scab to heal a cut… K2 is what determines where calcium will go in the body. K2 is what activates the proteins in the bone that capture and bind calcium. Notice, Vitamins A, D, and K2 are ALL fat soluble vitamins. We use to get vitamin K2 naturally from the milk of GREEN GRASS fed cows. Cows are essentially penned and grain fed now so that the milk does not contain K2. The only primary source of K@ is a Japanese fermented soy bean dish called Natto. Western people cannot usually stomach smell, taste, or texture. So, supplementation is necessary or we are GUARANTEED to be deficient.

      • Grass fed milk products are popping up more often in stores like Whole Foods, Wegmans, etc. Good to know K2 is easier to incorporate into the diet now!

      • Thank you, Dr. David! Your answer is amazing. I never new about Vit. K2 and its sources and how it could be utilized in the body. I have family herbalist certificate from the Herbalist school of Dr. Christopher and I was researching herbal information about Black Walnuts (which grow in my backyard) and found you interesting answer.

    • Herbalist Steven Horne once quoted another herbalist (can’t remember who exactly) who used black walnut powder on cavities. I guess he packed the cavity area with the powder and left it there for some time, repeating until completely healed.

      The action has more to do with the anticeptic nature of BWH than anything else (cavities are really just tooth infections) but the calcium content and thyroid support BWH provides no doubt aids in this.

      Many people use powdered BWH on a toothbrush for prevention and good oral hygiene. Especially good for loose or inflamed gums.

  3. I’m not sure where this is not plentiful. You can’t walk very far where I live (northern Illinois) in the fall without stepping on fallen walnuts, hull intact.

  4. My 18 month old has had ringworm for 6-8 weeks now. I have been treating it with OTC anti-fungal creams per his pediatrician. I really want to try the black walnut. How do I apply it externally? Tincture? Powder?

  5. Hello,

    I am having terrible issues with chemical sensitivities. I am 54, have white/grey chemically dyed hair and am very interested in using black walnut to dye away the grey. However, I am hesitant because I read on Web MD that black walnut applied topically may cause tongue cancer. I have great respect for your research abilities and hope you can allay my fears in using black walnut hull hair dye for long-term use.

    Kind Regards…

  6. I am pregnant and want to keep my greys covered without putting harsh chemicals on my head. Is it safe to use just for that purpose? I don’t want to take it internally.

    • use Henna hair dye instead – Rainbow Henna – lasts about 6 weeks – cheap, natural and long lasting – use two tones to get better highlights.

  7. Would you provide me more details on how i can use black walnut as “Natural Hair Dye”. Currently, i use henna. Are there any side effects? If i use both simultaneously?


  8. Wondering if you think Diatomaesous Earth is the route to take to help with my 12 year old daughter. She suffers from sleep distrubances, hormone imbalance, acne, fatigue, scalp irritation, & constipation. She is gluten free and dairy free already. She is a very active USA swimmer so sleep is so curcial among many things. I’d like to add DE to her morning coconut milk smoothie. She currently takes omega swirl, magnesium and probiotics.

    Thanks for any feedback.

    • always be extra cautious when using D.E. – if you are using it in powder form you need to be careful to not breathe it in. it can damage the lungs.

    • Sounds like she has Candida overgrowth; Diatomaceous earth will help. Also try a yeast and parasite cleanse. Some of my favorite brands for this are Now Foods’ Wormwood tincture, Kroeger Wormwood combination, Dr. Hulda Clark’s Parasite Cleanse Kit, and Candizyme.

  9. Hi I started using the waltnut powder on my hair and I like to know how long I have to use it to get my grey hairs black, and also is there any side effects in using this product long term regarding health . Thanks and kind regards helen

    • May I recommend a two stage process for completely covering white hair in one go.
      I discovered this from a woman who sources the best quality henna powder and indigo powder check her Uk site called Renaissance Henna. First do the henna, then do the indigo on top. Everyone is always wondering why my hair looks so shiny and strong.


      • Inaccurate information. YES black walnut can be used with dogs. I do regularly. I use black walnut with dogs as part of my parasite control program. You just don’t give to pregnant animals. I use a weekly program called Molly’s Herbals Worm Formula kit (I prefer the term DE-worming being I am not adding worms). :) The Formula #1 contains the black walnut among other herbs and the Formula #2 has other anti-parasitic herbs and kidney/liver supporting herbs. I have seen excellent results in my dogs coat and weight on this program.

    • My dog thinks black walnuts in their husks are balls and is constantly dropping them at my feet to throw. Twice I’ve seen him accidently swallowed some of the husks, and then vomited for a little while. I’m sure he gets small bits ingested on a regular basis during the months there are walnuts, and is otherwise healthy.
      Not sure if this helps much!

  11. Just wanted to know, is it safe to ingest black walnut extract diluted in cold drinks or smoothies? I suffer from digestive issues since the gall bladder removal. I have gained alot of weight in my mid-section and often enough I feel bloated. Can it treat yeast overgrowths due to high blood sugar levels? I have acid reflux and read that this extract can help with digestive issues. Is it safe to use the extract topically? I could use some sound advise. Thanks

  12. Just wondering if black walnut in capsule form can be taken during early pregnancy. If not recommended why? What else can be used treat pinworm safely during early pregnancy?

    • It is generally not recommended to take during pregnancy. From what I have read it appears to possibly cause birth defects. I, personally, would also worry about the risk of preterm labor due to its laxative effect and its tendency to expel things from the body.

  13. “Milk” from a milkweed will also get rid of warts. It only takes a few times ; leave the milk on as long as you’re able.
    Grey hair is a copper deficiency.
    When using DE, make sure you’re using food grade.
    Thanks for the good info on your site!

    • Hi Pam,

      This information about grey hair being a copper deficiency is from the book/tape; Dead Doctors don’t lie.
      I didn’t have the internet way back when… 1996/1997.
      I just searched up his picture on Yahoo Images. Dr. Joel Wallach now has grey hair!

      LOL I heard the good old Doc on the radio a couple of days ago. He is still alive! I guess he may be right about a lot of things, but grey hair isn’t one of them.

  14. My male cat recently had loose stools and after reading about the benefits of Black Walnut Hulls. I purchased and used six drops per one cup of water, which I gave him a teaspoon three times a day for three days. His stool is back to normal and a happier kitty!


  15. I made black walnut tincture for the fist time, but i’m not sure if it turned out right, it smells kind of strange and when I opened the jar for the first time after having it sitting in a dark room for a couple of weeks it fizzed like when you open a soda pop, is this normal?

  16. Black walnut in liquid or powder form is quite effective to use for killing parasites in cats, dogs & humans. It is used as a natural preventative for heartworms in dogs, & also as a natural treatment/remedy, should your dog have already contracted them.
    Black walnut is very powerful; a tiny amount goes a long way. For example, just two drops of the liquid on my cat’s canned food for five days eradicated his tapeworms, whereas the expensive vet medication I had given him previously did not.

  17. Hello

    Can you please help me. i am trying to purchase BLACK WALNUT SHELL OR BLACK WALNUT POWDER. but do not know where to get this items.
    Just wondered if you can recommend where I will be buy this.

    many thanks

  18. Is there any difference between black walnut Tincture and black walnut Wormwood? Can I use the last as to re-mineralize teeth?

  19. what about taking the tincture while brestfeeding? my son is 2and a half yrs old. i would take it in conjunction with benzonite clay…for 10 days or so. any women have any experience or advice?! thanks

  20. Hi there!

    Im on a medication that helps with my sobriety, I take one daily dose…since my rehabilitation I have just been so sluggish. Also ive never been one to have regular bm’s. I purchased 500mg black walnut hull capsules yet im extremely scared of side effects.
    Will this be safe? Or rather- is it safe? Thank you?

    • However, you should wait at least one hour after taking ANY oral medication before taking black walnut hull as it can interfere with absorption of the medication and can cause you not to get your full dose. I’m assuming the medication you are on is methadone or possibly suboxone. I would wait around two hours after dosing before using black walnut just because I know how easy it is to interfere with absorption of those medications. You don’t want to be sick in withdrawal all day. No fun.

  21. Hello! I was researching today and came across your post. So I thought I’d just share how this was recommended to me just today by an Amish (herbalist) for ringworm; topically one or two times a day for 30 days.

  22. Can my 9 year old daughter take blackwalnut she’s very bloated and always hungry maybe she need a clean out I know for sure myself do also please help

  23. I made my own black walnut tincture this fall using the green hulls. I recently used it on my husband’s toenail that has had a fungus underneath it for about 10 years. The toenail is really dark.
    After dripping the tincture between the nail and the toe for a few weeks, I just noticed healthy pink nail growing in for the first time since he got the fungus. It looks like it has healed it!
    There was one side affect when using it. The morning after I put the first dose on his toe he threw up. I think it was because of die off. He was fine an hour later and ate regularly at meals that day.

    • How do you make the tincture and where did you buy the black walnut hulls? Thank you!! I have had the toenail problems for 20+ years now it’s so embarrassing.

      • I actually got the walnut hulls from my neighbor’s tree. You can get them in the fall while they are still green and make your own. You can probably buy some at mountain rose herbs or elsewhere, but I think fresh is stronger.
        I just cut off the green hulls and put them in a canning jar and poured Everclear alcohol over it to fill up the jar. Then I labeled the jar and put the lid on it. I shook it every few days. It will get really dark pretty fast. After a few weeks you can use it. I just used an eye dropper and dripped it under the nail. It was a little lifted up because of the fungus so there was a perfect spot to drip the tincture.
        Toenails grow slowly so it took a couple of weeks for me to notice the new pink nail growing. The pain went away pretty quickly and he was impressed at how much better it felt.
        I hope that helps you.

        • If anything iodine is needed for Hypo and not so much for Hyper hypothyroidism?
          I am curious, can you explain more.
          And any sources for your comment? I like to research, it would be pertinent to myself as well.

      • Hi,

        If you don’t know where to find a Black Walnut Tree, start calling your local nurseries
        and ask if you can speak to their Botanist. That’s what I did!
        It’s mid Sept 2015 now. Hurry. They are rip and just starting to fall from the trees.
        You need to get them before they start turning brown!

        Bring the kids with you and make it kind of a scavenger hunt!
        Good luck!

    • On a spiritual side note, I had a good laugh about your herbal tending to your husband. He held some kind of negative energy in his body for 10 years, the toe being the evidence. Soon as you cooked up a homemade brew and tended to it, the entity immediately couldn’t stay in there any longer and went down the toilet as fast as it could run from the miracle of your potion, hahaha. And the entire rest of the time was just rehealing the toe back to normal. Great story. Thanks. Loved it.

  24. Just a caution here, I started using black walnut tincture internally and after a few days, noticed the onset of hypothyroid symptoms that I hadn’t experienced in several years ( I have Hashimotos and keep it in check through diet and lifestyle). I looked into it, and discovered that black walnut is very high in iodine, which should be avoided in those with Hashi’s. After stopping the tincture, the symptoms disappeared within a couple days. Just an FYI!

  25. I know it says not to use black walnut when breastfeeding, but I’m just wondering what harm it would do passing through the breastmilk if it is good for fighting off candida and parasites. I’m afraid that my 10 mo old may have gotten pinworms from his siblings because he’s always crawling around the floor and then sucking his thumb. Wouldn’t it help the both of us out? Does anyone have any info about this?

    • I think it’s too strong of a medicine to take while breastfeeding. It could cleanse you out and push toxins into the milk. I wouldn’t chance it.
      There are probably some milder herbs you could try if you suspect pinworms.
      Look in to aloe vera. Juicing it in particular.
      Hope that helps.

  26. Is it unsafe to take black walnut at any stage of pregnancy? I usually take it at the first signs of a stomach ache and it goes away immediately. I’m not anticipating a stomach ache, but as a just in case. I just found out I’m pregnant :)

  27. I have read that this can help with thrush or yeast……is this true and can a baby take this? I have been battling a bad yeast infection on my daughter and nothing and I mean nothing seems to be working. I have not tried coconut oil or this. baking soda baths, vinegar wipes solution and over the counter meds from the doctor are just not doing the job. It seems that when she poos it makes it way worse which leads me to believe she needs something oral as well as on her poor sweet bottom. Can anyone help or make any suggestions?

  28. Question: how long is it safe to take black walnut? I found a parasitic cleanse that recomends using up to 20 drops first 16 days then 20 drops once daily from days 16-60. Is this safe? and will it kill mites? Since I started they are coming out on my skin, some biting me!

  29. My 5 year old came down with pinworms…I bought this product to help treat it. I was wondering if this can be used while nursing. I have a 15 month old and want to take it to help treat pinworms in myself. Thank you for any help!

  30. I want to do a parasite cleanse before becoming pregnant. How long should I wait after using the black walnut and wormwood before trying to conceive?

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