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Is Thorne Research / Thorne Vet a member of the National Animal Supplement Council (NASC)?
Thorne Research has been an NASC member in good standing since 2003 and is authorized to display the NASC quality seal on all Thorne Vet products.
Are your products pharmaceutical grade?
There is no standardized definition for the term "pharmaceutical grade." However, we manufacture our products with the utmost concern for product purity, quality, and safety. The U.S. Food and Drug Administration has good manufacturing practice guidelines (GMPs) for the food industry, the pharmaceutical industry, and the dietary supplement industry. We are in full compliance with the GMPs for the dietary supplement industry. Our internal standards for ingredient purchasing and the manufacture of finished products are unsurpassed. Also, our products are also approved for sale in Australia by the Therapeutic Goods Administration of the Australian government, which holds us to a pharmaceutical standard.
What is the best way to give your products (with or without food, on an empty stomach, before or after meals)?
Unless otherwise recommended on the label, it is best to give our animal health products with food for optimal absorption.
What fillers do you use in your animal health products and where do they come from?
When it is necessary to fill the capsule with something in addition to the active ingredients, we use magnesium citrate, cellulose, magnesium citrate-laurate, or silica. Magnesium citrate is pure magnesium reacted with pure citric acid; cellulose is pure plant fiber (usually from pine trees), magnesium citrate-laurate is pure magnesium reacted with citric acid and lauric acid (a small fat molecule that does not inhibit absorption), and silica is the pure element found in sand.
What are the elemental amounts in your minerals?
The elemental amount of each mineral is listed in the Product Facts box on each product label on the website for all mineral products. If the product lists the amount of calcium as 150 mg, that is the amount of the elemental mineral (calciium, in this example) in the product.
Do you test for heavy metals in your fish oil products?
Fish oil ingredients are tested for heavy metals and other contaminants when we receive them and before we use them in our products.
Can your products be taken out of the capsule?
Most of our products can be taken out of our two-piece pull-apart capsules and put into a small amount of food. However, there are products we do not recommend be taken out of the capsule.
What does chelate mean?
Chelate refers to a chemical reaction between a mineral and a non-mineral component. It usually refers to a chemical compound made up of a mineral and an organic acid or amino acid that makes the mineral easier to absorb into the body; for example, magnesium and citric acid are reacted to form the chelate, magnesium citrate.
What is the best way to store your products? Do any products require refrigeration?
We recommend that most of our products be stored tightly sealed in a cool, dry place. A few products do need to be refrigerated, which is clearly indicated on the label.
Do your B vitamins contain yeast?
None of our B vitamin products contain yeast.
Do you carry Acidophilus products?
We have one probiotic product that is similar to Lactobacillus acidophilus, which is used to support gastrointestinal health – the product is Bacillus CoagulansVET. It is more stable than acidophilus, so it does not need to be refrigerated.
How long have you been in business?
Thorne Research started business in Seattle, Washington, in 1984.
Thorne Vet makes a number of products that appear to have similar usages. How do I determine which product to use?
The Thorne Vet product line was designed to be dispensed or prescribed by veterinarians. Veterinarians are educated to know which product is best suited in individual cases, which is why it is always our advice to talk to your veterinarian before giving any animal health product to your dog, cat, or horse.
I currently do not have a veterinarian who practices integrative and holistic medicine, so how do I obtain more information on your product line and usages?
Our website is a very useful resource for information about our product line. You may also call or e-mail Thorne Vet and ask to be referred to a veterinarian in your area who carries Thorne Vet products.
Why aren't your products sold in health food stores?
We believe our products should, in most cases, be dispensed by a knowledgeable veterinarian, not a retail salesperson. Because of this, it has always been our policy to not sell our products to health food stores. You can, however, obtain our products from licensed pharmacies.
Are any of your ingredients from China? If so, why do you continue to purchase these ingredients from China?
Yes, we obtain some ingredients from China. In some cases, it is the only source in the world. However, as with all our purchased ingredients (no matter what their country of origin), we test every lot we receive for identification, purity, and quality. This may include testing for heavy metals, bacteria, and other contaminants.
I'd like to know the names of your ingredient vendors. Where can I find this information?
Since some of our ingredients are difficult to source and in some cases exclusive to Thorne, we consider the identity of our ingredient suppliers to be confidential, and do not reveal their identity.
Your label sometimes says "Manufactured For." Do you out-source some products and if so, why and which products?
Our softgel products are manufactured by a company that only makes softgels. We purchase the ingredients (fish oil, etc.), test them for purity, and send the ingredients to be made into softgels. There are just a few softgel manufacturers in North America. The one we use is GMP certified and has been personally inspected by Thorne's QA personnel.
Why do you discontinue products?
Sometimes we discontinue a product because of lagging sales, while other times it is due to unavailability of ingredients or regulatory issues in a specific country.
Why do you not offer terms?
To keep our prices competitive we do not have an accounts receivable and collections department, which would unfortunately be necessary if delayed payment terms were offered. Payment can be made via COD, Visa, MasterCard, or American Express.
I currently do not have a holistic veterinarian and do research on-line. Why is the Medical Affairs department not available to me?
We sell directly to health-care practitioners, so our Medical Affairs staff is available only to our health-care practitioner customers. Thorne Vet recommends that all animal health products be part of a program you create with the advice and expertise of a veterinarian.
Are your products certified organic?
No, they are not.
Are your products GMO-free?
We obtain the GMO status of any new ingredient offered to us, and make it a priority to purchase non-GMO plant-based ingredients whenever possible.
Is the fish used in both the fish oil products and the softgel gelatin tested for heavy metals and PCB's?
Yes, they are.
Do you carry a probiotic product?
Yes. Bacillus CoagulansVET is our best-selling probiotic. It is a very stable bacteria that supports gastrointestinal health.
Do you do private labeling and if so, whom do I contact?
We do a small amount of private label manufacturing for a few established customers. Contact info@thorne.com.
Are your products covered by pet insurance?
Some animal health products may be covered by pet health insurance policies.
Why do your products change in color, smell, texture or taste?
Since the ingredients in our products are often from natural sources, these ingredients can occasionally vary in color, smell, texture, or taste. Be assured that the ingredients are always tested for identification, purity, and quality before being used in any product.
Will radiation or exposure to extreme cold or heat damage my product?
Ionizing radiation can damage any nutrient or botanical. Thorne Vet products are very stable and will not degrade if exposed to moderate variations of heat or cold.
What is the source of your natural bacon flavoring?
Pork.
What size capsules do you use?
The capsule size varies from size #2 to size 00.
What is the expiration date on your products?
Most of Thorne Vet products carry a two-year expiration date, with a few exceptions that have a shorter shelf life. The expiration date is clearly indicated on the bottle face, toward the bottom.

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