Calabash chalk
Calabash chalk


Calabash chalk is a type of clay. Some people, especially pregnant women, eat calabash chalk as medicine. But calabash chalk contains heavy metals like arsenic and lead, which can be dangerous.

Despite serious safety concerns, calabash chalk is used for morning sickness, nausea and vomiting, diarrhea, and skin care, but there is no good scientific evidence to support these uses.
When taken by mouth: Calabash chalk is LIKELY UNSAFE when taken by mouth. It contains lead and other heavy metals that can cause severe adverse effects when consumed in large amounts or for a long time.

When applied to the skin: There isn't enough reliable information to know if calabash chalk is safe or what the side effects might be.

Special Precautions & Warnings:

Pregnancy and breast-feeding: Calabash chalk is LIKELY UNSAFE when taken by mouth. It contains lead and other heavy metals that can cause severe adverse effects to the infant when consumed in large amounts.


NatMed Pro rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, Ineffective, and Insufficient Evidence to Rate.
Likely effective Effectiveness definitions
Possibly effective Effectiveness definitions
Likely ineffective Effectiveness definitions
Possibly ineffective Effectiveness definitions
Insufficient evidence Effectiveness definitions
  • Morning sickness.
  • Nausea and vomiting.
  • Diarrhea.
  • To reduce appetite.
  • Birth control.
  • Skin care.
  • Wound healing.
  • Other conditions.

Dosing & administration

The appropriate dose of calabash chalk depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for calabash chalk. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.

Interactions with pharmaceuticals

It is not known if Calabash Chalk interacts with any medicines. Before taking Calabash Chalk, talk with your healthcare professional if you take any medications.

Interactions with herbs & supplements

There are no known interactions with herbs and supplements.

Interactions with foods

There are no known interactions with foods.


There isn't enough reliable information to know how calabash chalk might work. But calabash chalk contains lead and other heavy metals. These heavy metals can cause serious adverse effects in children and adults. has licensed monographs from TRC Healthcare.
This monograph was last reviewed on 25/05/2022 18:36:17 and last updated on 30/10/2020 20:54:27. Monographs are reviewed and/or updated multiple times per month and at least once per year.
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