Magnesium, 300 mg 100 capsules

Dr. Clark Store SKU: 10447-100
Dr. Clark Store Magnesium Oxide, 300 mg, 100 capsules
Dr. Clark Store Magnesium Oxide supplement facts
Dr. Clark Store products are chemically pure, solvent free and additive free.
Dr. Clark Store products are tested for microbiology, heavy metals, and identity. We also test products for certain toxins using Dr. Clark’s biofeedback device called a Syncrometer.
Dr. Clark Store products are manufactured without flow agents like magnesium stearate, which interfere with nutrient absorption.
Gelatin capsules are a purer alternative to “veggie” capsules, which are made from tree pulp and chemicals. Our BSE and TSE free gelatin capsules are made with gelatin from cattle hide – never from bones.
Dr. Clark Store products are high quality, chemically pure, and made in GMP verified facility.

Magnesium, 300 mg 100 capsules

Dr. Clark Store SKU: 10447-100
Regular price $12.99
Shipping calculated at checkout.
Only 1145 items in stock!
  • The Original Dr. Hulda Clark Products
  • Leader in Purity Since 1993
  • Certified and Audited GMP
  • Supports bone structure*
  • Helps to regulate heartbeat*
  • Promotes healthy muscle tone*

Magnesium is an important mineral necessary for many functions in the body, including chemical reactions, muscle contraction, blood clotting, blood pressure regulation, and bone development. The body cannot make magnesium; therefore our needs must be met through the diet. While the majority of our magnesium supply is stored in the bones, some is found in the muscles and body fluids. When blood levels of magnesium are low, the body pulls magnesium from the bones to correct the imbalance.*

Magnesium works in conjunction with calcium and phosphorous to create bone structure. Some magnesium remains on the surface of the bone, acting as storage from which the body can draw from when the dietary supply is insufficient.

Magnesium and calcium also team up to regulate nerve and muscle tone. Magnesium is a chemical blocker for many nerve cells. Insufficient magnesium allows calcium to enter the nerve cells, which can excite the nerve. Sufficient magnesium in the diet keeps muscles relaxed and can ward off symptoms of over stimulated nerves, such as tension, soreness, spasms, cramps and fatigue in the muscles.

Many chemical reactions that occur inside the body require the presence of an enzyme, a specialized protein that helps facilitate chemical reactions. Hundreds of enzymes in the human body need magnesium to carry out their roles in metabolism and energy productions, among numerous other functions.

Magnesium also plays an important role in cardiovascular health, as this mineral helps to integrate the activity of the heart muscle and nerves that induce a heartbeat. Low magnesium may increase the risk of irregular heartbeat and palpitations. Some studies indicate a correlation between increased magnesium and lowered blood pressure. Relaxed muscles that control the blood vessels allow the blood to move more freely.*


Magnesium (from magnesium oxide), gelatin (bovine) capsule

Suggested Use
Adults and children 12 or more years of age, take 1 capsule daily. Do not take with food, it will reduce the acid in your stomach.

Store at room temperature. Keep out of reach of children.


Frequently Asked Questions
Q: What is the capsule size?
A: Capsule size 0.

Q: What type of capsule does this product come in?
A: This comes in a gelatin capsule. The gelatin is derived from bovine hide (beef skin).

*Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any diseases. As with any dietary supplement, you should consult with a qualified healthcare professional if you are pregnant or nursing, if you have any medical condition, or if you are taking any medication before using this product. Always consult with a healthcare professional before giving supplements to children. Please read full disclaimer here.
Coupon (discount) codes are not applicable on product subscriptions. The subscription price is already discounted from the one time purchase price.


All orders are shipped directly from our factory warehouse in Chula Vista, California. Orders received before 12PM Pacific Time ship the same day (excluding weekends and holidays). Orders received after 12PM Monday-Friday will ship the following business day. Your tracking number will be emailed from as soon as your order is shipped. 

For international shipments, duties and taxes may be applicable. By ordering from this website, you acknowledge that it is your responsibility to pay any duties and taxes.

Read More



You can return any unopened or unused product within 30 days on the date on your invoice. Simply send the item back with a copy of your invoice. If you are unhappy with any consumable product, you may return an open item for a refund as long as at least 50% of the original contents remain and the return is done within 30 days of the date on your invoice.  

Please report any overages, shortages, or damages within 10 days of receiving your order.

Read More


Recently viewed