General Product Questions

Anytime, because all of our products are food.

Children should avoid food that contains very hot spices and alcohol, but Yamamoto Kanpoh products are safe for children.

PLEASE FOLLOW THE DIRECTIONS & CAUTIONS OF EACH PACKAGE LABEL. For children, adjust serving to about 1/5 of the label (adult) serving size. (This is based on a calculation of the user’s weight.) Infants should not take any supplements. If you are pregnant or breastfeeding, please consult your physician before use. For Young Barley Grass Powder, there is no problem to give it to children who are able to eat the same food as adults.

You should NOT take any supplements containing Senna Leaves, Aloe, Senna Obtusifolia if you are pregnant or breastfeeding. These ingredients have a natural laxative that may cause irritation to the uterus as well as the large intestine. There is a risk of miscarriage. Consult your doctor for advice and suggestions.
Consumption of these ingredients during breastfeeding may cause infants to have diarrhea by transferring trace ingredients from breast milk to infants. Use with caution.

It is safe to take a little more than the suggested serving size because our products are food. However, the body will not obtain any addition benefit by consuming more than the suggested servicing size. The suggested serving size will achieve the best results.

It varies depending on a person, but as with any healthy change to diet, results typically take 4 months or longer to be noticeable.

Please consult your physician. If you are taking medication for lifestyle disease, please do not take supplements together without permission from your physician.

Our products use natural ingredients, so flavor and color may vary depending on production area, weather conditions and time of harvest. We only sell products that have passed our quality standards. Variations in color of the finished product pose no problems of safety or quality.

About Our Barley Grass Powder

Take 1 or 2 packets (4g per packet) a day anytime. For weight loss, it is recommended to take it before a meal.

Generally, there is no problem taking it with other supplements. However, Barley Grass Powder contains plenty of dietary fiber. We do not recommend taking it with supplements that are also rich in fiber, as it may cause diarrhea.

Hot water may change the color of the young barley powder, but it does not affect the quality.

It is 100% barley grass sprout powder. There are no additives.

If there is leftover, please keep it in the fridge and consume it as soon as possible. Discoloration and change in flavor may occur if kept for more than a day.

Young barley leaf is high in dietary fiber, which helps digestion and maintains healthy bowel movements.

It is 100% barley grass sprout powder. Unless you have restrictions on vegetable consumption, there should be no problem.

Do not take your medication and this product together. The Vitamin K in young barley leaf may affect your medicine.

Yes. It does not contain caffeine and is safe to drink during pregnancy.

Yes. There are no ingredients in this product that can harm you or your baby.

Please do not give infants Barley Grass Powder until they have finished the baby food stage. If they are already eating foods that contain dietary fiber and have no health issues, you can give them a little bit at a time.

Our Barley Grass Powder is rich in dietary fiber. Dietary fiber improves bowel movements but may cause diarrhea. Please adjust the dosage.

You may have green stool when you eat green vegetables. There is no health problem. Two possible reasons are that green is the color of chlorophyll and, as bowel movements are accelerated, it may be discharged before bile turns from green to brown.

Our ultivation area may vary depending on each land’s condition and harvesting timing. Currently we partner with farmers in New Zealand, Italy, and Japan in 2024.
We grow our own young barley at contract farms in a great environment for young barley, which includes a high elevation of 1,500-1,800m, strong UV, and low temperatures (32-50˚F / 0-10˚C). We can grow young barley without pesticides because no pests occur. Our staff are stationed and manage the site every year, using only the young shoots as raw material.

About Senna Herbal Tea

You probably overdosed. Efficacy varies depending on a person. Please follow description and suggested dose, and increase little by little.

It's said to effect for 8-10 hours after taking Senna Herbal Tea. Please adjust to your lifestyle.

It is because at breastfeeding stage, it may cause infants to have diarrhea by transferring trace ingredients from breast milk to infants.

This product uses the laxative ingredients that gives irritation to the uterus as well as the large intestine. It has a risk of miscarriage.

If your medication is causing constipation, Senna Herbal Tea would not be helpful. Circulatory medicine such as the heart and antibiotics, psychic nervous system agents, sleep inducing agents, cold medicines, cough suppressants, prostatic remedies, frequent urine remedies may be constipated.

If you increase dosage to discharge stool, this might be your addiction.
We strongly recommend to take as little laxative as possible.

As long as under the suggested dosage, there is no problem. However, we do not recommend increasing dosage too much.
If you don't see any results, there might be different cause. Please consult with your physician.

As long as under the suggested dosage, there is no problem.

Please read caution on package label. Other than that, there is no serious side effects reported.

Dietary fiber and yogurt are helpful. Senna is activated by intestinal bacteria. By eating dietary fiber, you can increase intestinal bacteria.

Senna is particularly strong cathartic medicine. Please read and follow descriptions and suggested dose.

In general, overdosing laxatives can weaken intestinal susceptibility. If you take a lot more than suggested, it may cause intestinal expansion and stop discharging stool.
If you don't see any result after taking suggested dose, please consult with your physician.

Components of Senna has pigment, and this pigment attaches to intestinal mucosa. If you stop taking Senna, the pigment will fade in 6 months or so.
There is no serious disease that is caused by this pigmentation reported.

Bowel obstruction generally weakens the effect of laxative. In this case, Senna may not be effective enough to treat constipation. Please prioritize medical treatment.