5% Hydrochloric Acid Drops, 1 fl. oz. | Dr. Clark Store
Dr. Clark Store Hydrochloric Acid 5%, 1 oz (label left view)

Dr. Clark Digestive Power! Hydrochloric Acid (HCL) 5%, 1 oz


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  • Product Description

    • A potent digestive aid
    • Promotes optimal stomach acidity*
    • Support better nutrient absorption*


    The acidic environment in the stomach is vital to the proper dismantling of foods and the subsequent absorption of nutrients. Taking hydrochloric acid (HCL) supplements can promote optimal acidity. Most people use Betaine HCL, but if you develop sensitivity to it, consider Glutamic Acid or HCL 5% drops, or a combination.

    HCL converts pepsinogen to pepsin which breaks down proteins into peptides. HCL maintains a pH in the stomach of approximately 2.0. It also dissolves food and kills microorganisms.*

    Some research suggests the theory that people with a wide variety of chronic disorders, such as allergies, asthma, candida albicans, gallstones, and acne do not produce adequate amounts of stomach acid.*

    HCL is responsible for the digestion of fats and proteins. Betaine hydrochloride (betaine HCL) is an acidic form of betaine, a vitamin-like substance found in grains and other foods. Betaine HCL is recommended as a supplemental source of hydrochloric acid for people who have a deficiency of stomach acid production (hypochlorhydria).*


    Deficiency of Gastric Acid
    Stomach acid or hydrochloric acid (HCL) is a powerful digestive aid. After a high-protein meal, the pH in a healthy stomach may drop to as low as 1 or 2. However, buffers quickly raise the pH back to 3 or 4.*

    With age, stomach acid secretion tends to decrease, resulting in low stomach acid, poor digestion, mineral deficiency, and disease, in that order. What to do? Our HCL supplements help make minerals and nutrients more absorbable. Achieving the correct balance of flora is a key to maintaining proper digestive function and overall health.*

    Stomach acid secretion chart

    A deficiency of gastric acid secretion increases the likelihood and severity of certain bacterial and parasitic intestinal infections. This causes an imbalance in the growth of normal bacterial flora in the intestines.*

    Dr. Clark repeatedly stated that people were better off taking HCL instead of acidophilus, because if the “acid barrier” (the stomach) is in proper order it stops inhospitable microorganisms from entering the colon, this results in growth of good flora in the colon without the constant assistance of acidophilus supplements.*

    Related Articles: Digestive Enzymes: A Magic Bullet | Which Digestive Aid Supplement Should I Choose?


    Hydrochloric Acid is a big deal and that is why we carry other of HCL supplements:

    Glutamic Acid Betaine HCL

    Most people use Betaine HCL capsules however some have sensitivity for it so they choose the Glutamic Acid powder or the Hydrochloric acid 5% drops or a combination thereof.

    While Betaine HCL can be considered stronger the other two have the added benefit of being mixable into foods. In addition to aid your digestion by increasing your stomach acid Glutamic Acid Powder has many additional benefits unrelated to digestion.

    Research indicates that Glutamic Acid fuels brain function, and can attach itself to nitrogen atoms. This may help to support the natural cleansing of the body of ammonia. Glutamic acid is crucial for proper cell function. It serves as an important neurotransmitter in the brain and is involved in both the learning and memory process. Glutamic Acid represents the combined levels of glutamine and glutamic acid.*

    Note: In very rare cases people have too much acid; in that case you will feel a burning sensation or heartburn when taking HCL with your food. In that case talk to your healthcare provider to confirm that suspicion and consider taking Balanced Bicarb Antacid.*

    Safety Information
    As with any dietary or herbal supplement, you should advise your health care practitioner of the use of this product. If you have ulcers, gallstones or are nursing, pregnant, or considering pregnancy, you should consult your health care provider prior to taking this product. The use of this supplement is not intended to treat any disease, and does not claim to cure or prevent any disease.

    Interaction with Medication and Other Supplements
    If you are taking medications, you should check with your physician or pharmacist prior to using our products. You can also get drug interaction information from one of the many sites on the internet. Search for: Interaction with Medications, Supplements.

    Note Regarding Children 
    Please do personal research and consult with your health care professional before giving any supplements to children. Suggested use is typically designed for adults and may be higher than you would give to a child.

    Consult with Your Healthcare Professional
    Please do not use the directions as a substitute for the advice from your health care professional. We are not responsible or liable for any actions or diagnosis made by you based on the instructions. We encourage you to consult with your health care professional, do personal research, and check all our ingredients against a reference book before consuming this product.

    *Disclaimer Notice: Our statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any diseases. Please note that reference to Dr. Clark protocols or production methods does not imply that our products can be proven to be any better than other similar products when using US government approved science. Prices are subject to change without notice. Please read full disclaimer here.


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  • Warranty Information

    Water, Hydrochloric Acid 5%

    Suggested Use
    Put up to 10 drops in food per use or up to 45 drops total per day in food.

    Note: Hydrochloric Acid can be taken with any type of food. It can be taken with water or juice.

    Warning: Avoid contact with eyes, skin and clothes. Do not put drops directly in mouth, it can dissolve teeth. For heartburn take water and milk, do not take baking soda. If heartburn persists seek the care of a qualified professional.

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

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