Whenever possible, we source raw materials from the USA. However, some materials are only available in other parts of the world including China, India, Europe and Southeast Asia. All products manufactured by 21st Century are made from raw materials sourced exclusively from qualified & certified suppliers. These materials must meet their quality specifications that are established using reference from well-known quality standards like the Food Chemicals Codex (FCC) and the United States Pharmacopeia (USP) in order to qualify to be used in the manufacture of 21st Century products.

21st Century adheres to full cGMP (current good manufacturing practices). In addition to our own ISO-certified laboratory, we employ the services of six additional ISO-certified laboratories to ensure that all raw materials meet their specifications for identity, purity, and potency.

Our warehousing, manufacturing, packaging and shipping facilities are certified as Safe Quality Food (SQF) facilities by Underwriters Laboratories (UL) and the company prescribes to the international Global Food Safety Initiative (GFSI).

Upon the completion of the manufacturing process, 21st Century finished products are again tested for purity, strength, composition and to assure they are free of microbiological and other contaminants. You can be assured that the vitamins produced by 21st Century in Tempe, Arizona are of the highest and finest quality.

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Like human supplements, dietary supplements for companion pets are subject to regulation under the Federal Food, Drug, and Cosmetic Act (FFDCA). Individual States also follow standards set by the American Association of Feed Control Officials (AAFCO), Codex, and U.S. Pharmacopeia (USP) for state laws on the sales of dietary supplements for pets.

Vitamins and Supplements are intended to support a balanced diet. This is required language on feed supplements since they cannot meet either the adult maintenance, or growth, and/or reproduction standards of a full and balanced diet required like dog and cat foods. The statement advises that the product, alone does not constitute a healthy diet but supplements a healthy diet. Products bearing this warning can be administered every day or as needed.

Storage instructions are printed on all PetNC labels. These items are best when stored in a dry cool space. Avoid storage locations over 86°F. Do not refrigerate pills as the humidity and condensation created could affect the integrity of the pill, softgel or capsule. It is wise to keep pet supplements in a cabinet at least 5 feet off the ground. Animals consider flavored supplements to be treats and will work hard at retrieving a bottle from a counter or a table, and given time, will eat them all. Do not wrap pet supplements as gifts and leave them under a Christmas tree or in a location where your pet can smell them. Accidental overconsumption of dietary supplements rarely result in pet fatalities, but can cause great discomfort like nausea, vomiting or diarrhea.

Your young pet is considered a puppy or a kitten until it reaches 80 to 90 percent of its anticipated weight and has developed a healthy immune system. When your pet was born, it inherited its immune system from its mother. Your kitten and puppy will gain the majority of their weight and develop independent immune system by approximately 9mos of age. Many supplements should not be administered to puppies and kittens. The labels of these products will indicate if they are appropriate for kitten, puppies or animals under 9mos old. Products indicated for Adult Dogs or Adult Cats Only can be given to a healthy animal that is 9mos or older. If your pet is being treated by a veterinarian, consult his/her advice prior to administering a dietary supplement.

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NEVER administer aspirin or Tylenol (acetaminophen) to a cat. Even in tiny amounts, these drugs can prove deadly to felines. Members of homes where pets live, should be vigilant with over the counter pain relievers. Accidental intoxication usually occurs after a pill is inadvertently dropped on the floor. If accidental ingestion occurs, call your cat’s veterinarian immediately.

No. Ingestion of garlic can cause a condition called hemolytic anemia characterized by the bursting of red blood cells circulating through your cat’s body. Ingestion can also lead to gastroenteritis, also known as an inflammation of the stomach and intestines, causing stomach pain. Symptoms of garlic toxicity can take up to four days to appear. If you suspect your cat has ingested garlic, call your vet immediately.

Why take the chance? Throw the container out and start with a new one. There are many rich ingredients in Milk Replacer that are best stored in a refrigerator or freezer to prevent rancidity and maintain freshness.

NEVER administer Tylenol (acetaminophen) to a dog. Even in tiny amounts, this drug can cause serious health issues for your dog. Members of homes where dogs live, should be vigilant with over the counter pain relievers. Accidental intoxication usually occurs after a pill is inadvertently dropped on the floor. Symptoms of acetaminophen intoxication include difficulty breathing, vomiting, weakness, and swelling of the face and legs. If you suspect your dog has accidently ingested acetaminophen, call its veterinarian immediately.

Yes! None of the PetNC products are time released. Therefore, any chewable tablets can be crushed or placed in wet or dry food for ease of administration. And remember, many nutrients come in several forms; chewable tablets, softchews, softgels and capsules. Consider a softchew form if your dog has difficulty chewing hard tablets!

Yes, but remember that probiotics are living organism. If you place the powder on wet food or mix into a treat, be sure your pet consumes all the powder. If your dog is a grazer, leaving food sit in a bowl for hours, you may want to try a different approach. Try placing the capsule(s) in a pill pocket to encourage them to ingest as much as possible immediately.

Yes! That’s one way to ensure your dog gets the nutrient. Remember though, it is difficult to squeeze 100% of the oil from a softgel. You can consider using a pill pocket or hiding the softgel in pet-healthy food.

You should always trust the label! If you feel your pet requires more therapeutic care than provided by the label dosing, consult your pet’s veterinarian.

If you took Glucosamine and Chondroitin on an empty stomach, you may feel nauseated afterwards. Your dog’s stomach can be affected in the same way. These items are flavored and your dog will like the taste, but they are not food. Glucosamine and Chondroitin can cause your dog to have nausea, and sometimes vomiting, if not administered correctly. Follow the label instructions and dosing for best results. Be sure this supplement is given during or after your pet’s meal to reduce incidences of gastrointestinal upset.