Black Walnut

Naturopath Hulda Clark, N.D., Ph.D., recommends using a blend of 3 herbs to flush the parasites out of your system: Black walnut hull tincture, wormwood capsules, and fresh ground cloves (to kill the parasites’ eggs) are used.

The following protocol is a composite of the recommendations of Dr. Clark and Dr. William Lee Cowden, M.D. Do the program for 10-14 days, take 5-7 days off, then repeat for another 10-14 days. CAUTION: All protocols are for adult dosage only and are generalized; that is, dosages and conditions will vary with the individual. Listen to your body; build up dosages slowly and carefully; only go at a rate you can tolerate. Before beginning any treatment, consult a qualified health care professional. This is especially important in the case of treating children, or if you are pregnant.

BLACK WALNUT HULLS. If you take liquid extract, make sure the extract is made from fresh whole green hulls of black walnut. You may also use black walnut capsules. Take with water 15-20 minutes before a meal.

For black walnut hull capsules, this is what Dr. Cowden recommends:

Day 1: 1 capsule 2X daily

Day 2: 2 capsules 2X daily

Day 3: 2 capsules 3X daily

Day 4: 3 capsules 3X daily

Day 5: 4 capsules 3X daily

Day 6: 5 capsules 3X daily

Day 7: 6 capsules 3X daily

Continue at 2 capsules 3X daily through day 14.

During the second 10-14 day round, take 6 capsules 3X each day.

For black walnut hull extract, this is what Dr. Clark recommends:

Day 1: 1 drop 4X daily, mixed in water. Space the drops 4 hours apart, starting in the morning.

Day 2: 2 drops 4X daily

Day 3: 3 drops 4X daily

Work up to 20 drops taken 4 times daily and continue at this rate until the treatment program is finished.

WORMWOOD. Wormwood works best when the full day’s dosage is taken at one time, 15-20 minutes before a meal, says Dr. Cowden. Here is his recommendation:

Day 1: 2 capsules

Day 2: 4 capsules

Day 3: 6 capsules

Day 4: 8 capsules

Day 5: 10 capsules

Day 6: 12 capsules

Day 7: 14 capsules.

Continue at 14 capsules until the course is complete. Stay off wormwood during the same 5-7 days you’re off black walnut, then resume at 14 capsules of wormwood daily for another 10-14 days.

CLOVES. For cloves, crush fresh cloves in a coffee grinder and fill gelatin capsules (size “00”). Fill the capsules at once and discard any left-over clove powder as it loses its potency quickly when exposed to the air. You will need 117 clove capsules, says Dr. Cowden.

According to Dr. Cowden, this is the schedule to follow:

Day 1: 1 capsule 3X daily

Day 2: 2 capsules 3X daily

Day 3: 3 capsules 3X daily

Then 3 capsules 3X daily through day 14. Take capsules 15-20 minutes before a meal. Stay off cloves the same days you are off wormwood and black walnut, then resume at 3 capsules 3X daily for another 10-14 days.

Some manufacturers provide a tincture containing all 3 of these herbs, which simplifies the procedure.


Black Walnut can help with the following




Parasite, Blastocystosis

Hulda Clark’s well-known anti-parasitic formula of wormwood, black walnut and cloves may be helpful in reducing Blastocystis.



May do some good
Likely to help
Highly recommended



Medical practice using herbs and other various methods to produce a healthy body state by stimulating innate defenses without the use of drugs.


A measure of an environment's acidity or alkalinity. The more acidic the solution, the lower the pH. For example, a pH of 1 is very acidic; a pH of 7 is neutral; a pH of 14 is very alkaline.


Herbs may be used as dried extracts (capsules, powders, teas), glycerites (glycerine extracts), or tinctures (alcohol extracts). Unless otherwise indicated, teas should be made with one teaspoon herb per cup of hot water. Steep covered 5 to 10 minutes for leaf or flowers, and 10 to 20 minutes for roots. Tinctures may be used singly or in combination as noted. The high doses of single herbs suggested may be best taken as dried extracts (in capsules), although tinctures (60 drops four times per day) and teas (4 to 6 cups per day) may also be used.


An organism living in or on another organism.


An alcohol or water-alcohol solution, usually referring to a preparation from herbal materials.

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