Written by: Pet Secret Biotechnology Content Team
Technical review: Pet Food Formulation and Quality Control Team
Last updated: August 7, 2026
Reading time: Approximately 10 minutes
Pet food additives are small ingredients that manufacturers add to cat food or dog food for a clear reason. Some supply vitamins and minerals. Others keep the food fresh, improve taste or support digestion.
However, the word “additive” does not automatically mean that an ingredient is harmful, artificial or low quality. For example, taurine, vitamin E, fish oil, probiotics and rosemary extract can all serve as pet food additives.
Private label buyers should focus on six questions:
- Why does the formula need this additive?
- What benefit does it provide?
- How much does the manufacturer add?
- Is it suitable for cats or dogs?
- Is it permitted in the target market?
- How much does it add to the product cost?
This guide explains the most common pet food additives in simple language.
Quick answer: What do pet food additives do?
Pet food manufacturers normally use additives to:
- Supply essential nutrients.
- Protect fats and oils.
- Improve taste and smell.
- Support digestion.
- Support healthy skin and coat.
- Help control stool smell.
- Support joints or other body functions.
- Maintain product texture and stability.
In short, every additive should have a clear purpose. A good formula does not include extra ingredients simply to make the label look longer or more expensive.
If you are developing your first product, read our complete private label pet food manufacturing guide before choosing a formula.
Are pet food additives safe?
Pet food additives can be safe when the manufacturer follows four basic rules:
- select a permitted ingredient;
- use it for the correct purpose;
- add the correct amount;
- test and control the finished product.
The FDA explains that pet food ingredients must be safe and have a suitable purpose. Depending on the ingredient, it may qualify as an approved food additive or as Generally Recognized as Safe for its intended use. Buyers can review the FDA animal food ingredient guidance for more information.
In addition, AAFCO provides ingredient names, definitions and guidance for animal food. A human-food ingredient does not automatically qualify for use in pet food. The AAFCO ingredient guidance explains this distinction.
Most importantly, dosage matters. A safe and useful ingredient may cause problems if a formula contains the wrong amount.
Therefore, “more” does not always mean “better.”
1. Vitamin and mineral premix
What is a vitamin and mineral premix?
A premix combines several vitamins and minerals in one prepared blend. Manufacturers add a small amount to the formula, but that small amount plays an important nutritional role.
Meat, grains, vegetables and oils provide many nutrients. However, they may not supply every nutrient in the correct amount.
A premix may contain:
- vitamin A;
- vitamin D3;
- vitamin E;
- B vitamins;
- calcium;
- phosphorus;
- zinc;
- iron;
- copper;
- manganese;
- selenium.
The formulation team chooses the exact blend according to the species, life stage and product goal.
What does it do?
A vitamin and mineral premix helps make the finished food complete and balanced.
For example, its nutrients may support:
- normal growth;
- healthy bones and teeth;
- skin and coat condition;
- normal energy use;
- normal immune function;
- general health.
Is it safe?
Yes, when a qualified formulation team calculates the correct amount.
Nevertheless, very high levels of some vitamins and minerals may cause harm. Buyers should never select a premix only because it has a long ingredient list or a low price.
Instead, the formulation team must review it as part of the complete recipe.
Our pet food formula and nutrition FAQ explains how manufacturers balance protein, fat, vitamins, minerals and other nutrients.
How much does it cost?
A standard vitamin and mineral premix may add approximately USD 15–60 per metric ton to a dry pet food formula.
Premium mineral sources, special nutrition targets and additional testing may increase this cost.
2. Taurine
What is taurine?
Taurine is an important nutrient that supports:
- normal heart function;
- eye health;
- the nervous system;
- healthy growth.
Cats cannot make enough taurine by themselves. Therefore, complete cat food formulas commonly contain added taurine.
Is taurine safe?
Yes, when the formula contains the correct amount.
However, the required level depends on the complete recipe, processing method and product type. Wet cat food and dry cat food may not use exactly the same amount.
How much does it cost?
Taurine may add approximately USD 2–15 per metric ton.
Although its cost is usually small, taurine plays a major role in cat nutrition.
3. DL-Methionine
What is DL-Methionine?
DL-Methionine supplies methionine, an essential amino acid.
In other words, pets need methionine, but their bodies may not produce enough on their own.
What does it do?
Formulators may use DL-Methionine to:
- balance the amino acids in the recipe;
- support normal growth;
- support muscle maintenance;
- support skin and coat condition;
- help manage urine pH in selected cat food formulas.
Is it safe?
DL-Methionine can be safe when the manufacturer calculates the correct dosage.
However, adding more does not automatically improve the product. The amount must match the protein sources, other amino acids and nutritional goal.
In addition, urinary-health claims may require product testing and regulatory review. Buyers should confirm the local rules before placing such claims on the packaging.
How much does it cost?
DL-Methionine may add approximately USD 2–12 per metric ton.
4. FOS and MOS prebiotics
FOS and MOS have long scientific names. Fortunately, buyers do not need to remember them.
Both ingredients belong to a group commonly called prebiotics.
What are prebiotics?
Prebiotics provide food for helpful bacteria in the digestive system.
As a result, they may support:
- healthy digestion;
- better stool quality;
- a balanced gut environment;
- normal nutrient use.
Manufacturers often include FOS and MOS in premium formulas and products made for sensitive digestion.
Are they safe?
Pet food manufacturers widely use both ingredients.
Even so, dosage remains important. Using more than necessary may increase the price without giving the pet a greater benefit.
How much do they cost?
FOS and MOS may add approximately USD 5–30 per metric ton.
Purity, dosage and supplier quality all affect the final cost.
5. Probiotics and postbiotics
What are probiotics?
Probiotics are live helpful microorganisms. They help support the balance of bacteria in the digestive system.
However, dry pet food production uses high temperatures. Some probiotic strains may not survive this heat.
For this reason, the manufacturer must choose a heat-resistant strain or apply the probiotic after cooking.
What are postbiotics?
Postbiotics are useful compounds produced by microorganisms. Unlike probiotics, postbiotics do not contain live bacteria.
Therefore, manufacturers may find them easier to store and use in dry pet food.
What do they do?
Depending on the selected ingredient, probiotics and postbiotics may support:
- digestion;
- stool quality;
- gut balance;
- normal immune function.
Are they safe?
They can be safe when the manufacturer chooses a suitable ingredient and handles it correctly.
Before approving the formula, buyers should ask:
- Which strain or postbiotic does the formula contain?
- How much will the manufacturer add?
- Can it survive production?
- Will it remain stable during storage?
- Does research support the proposed benefit?
How much do they cost?
Probiotics or postbiotics may add approximately USD 5–50 per metric ton.
Branded ingredients with stronger research support normally cost more.
6. Antioxidants
What do antioxidants do?
Fats and oils react with oxygen over time. Consequently, the food may develop a bad smell, poor taste and lower nutritional quality.
This process is called oxidation or rancidity.
Antioxidants slow down oxidation and help keep pet food fresh.
Common options include:
- mixed tocopherols;
- rosemary extract;
- vitamin E;
- permitted synthetic antioxidants.
Are natural antioxidants always better?
Not necessarily.
Natural antioxidants may support a clean-label or premium product position. However, they can cost more and may behave differently from synthetic antioxidant systems.
The formulation team should consider:
- fat level;
- oil type;
- expected shelf life;
- packaging material;
- storage temperature;
- destination climate.
For example, high-fat dog food usually needs stronger protection than standard dry food.
Are antioxidants safe?
Manufacturers can safely use permitted antioxidants within the legal limits of the target market.
In addition, the ingredient name and product claims must follow local labeling rules.
How much do they cost?
An antioxidant system may add approximately USD 3–20 per metric ton.
Although this cost is relatively low, poor antioxidant protection can create a much larger loss. The product may develop a rancid smell before the end of its shelf life.
7. Palatants
What are palatants?
Palatants improve the taste and smell of pet food.
Manufacturers often apply them to the outside of dry kibble after cooking. Depending on the formula, a palatant may come from:
- chicken;
- fish;
- liver;
- yeast;
- hydrolyzed animal protein;
- other permitted flavor ingredients.
Why are palatants important?
A formula can look excellent on paper but still fail if cats or dogs refuse to eat it.
Therefore, palatability is especially important for:
- cat food;
- premium products;
- sensitive-pet formulas;
- products using unfamiliar proteins;
- new brands entering the market.
Are palatants safe?
Yes, when the manufacturer uses permitted ingredients at the correct level.
Moreover, buyers should ask whether the finished product has completed a palatability test. A flavor supplier’s description alone cannot prove that pets will prefer the final formula.
How much do they cost?
Palatants may add approximately USD 20–120 per metric ton.
Compared with many other additives, palatants can have a larger effect on the total formula price. Their cost depends on the raw material, quality and application level.
8. Fish oil and omega-3 sources
What does fish oil do?
Fish oil provides omega-3 fatty acids.
These nutrients may support:
- healthy skin;
- coat shine;
- normal brain development;
- general health.
Flaxseed and some other plant ingredients also provide omega fatty acids. However, they do not supply exactly the same types as fish oil.
Is fish oil safe?
Good-quality fish oil can safely support a balanced pet food formula.
However, oxygen, heat, and light can damage the oil. Poor-quality or oxidized fish oil may create an unpleasant smell and reduce product quality.
Consequently, the manufacturer should control:
- oil freshness;
- storage conditions;
- antioxidant protection;
- application temperature;
- finished-product shelf life.
How much does it cost?
Fish oil may add approximately USD 10–80 per metric ton.
The oil type, purity and dosage determine the final cost.
9. Yucca extract
What does yucca extract do?
Yucca extract may help reduce stool smell.
It does not stop a pet from producing waste. Instead, it may reduce some of the compounds that cause unpleasant odors.
Is it safe?
Manufacturers can use yucca extract safely at the recommended level.
How much does it cost?
Yucca extract may add approximately USD 1–10 per metric ton.
Therefore, it usually has only a small effect on the total formula price.
10. Glucosamine and joint-support ingredients
What does glucosamine do?
Manufacturers often add glucosamine to dog food made for:
- large breeds;
- active dogs;
- senior dogs;
- joint-support positioning.
Some formulas also contain chondroitin.
Does every formula with glucosamine support joints?
Not automatically.
Some products contain only a very small amount. In that case, the name may appear on the ingredient list without providing a meaningful nutritional level.
For this reason, buyers should ask:
- How much does each kilogram contain?
- Does the specification guarantee the amount?
- Does the formula support the proposed claim?
- Does the target market permit that claim?
How much does it cost?
Joint-support ingredients may add approximately USD 5–50 per metric ton.
Higher dosages, greater purity and branded ingredients can increase the cost.
Pet food additive cost comparison
The following figures provide early planning estimates. They do not represent a final quotation.
| Additive | Main purpose | Estimated formula cost per ton |
|---|---|---|
| Vitamin and mineral premix | Nutritional balance | USD 15–60 |
| Taurine | Heart and eye support, especially for cats | USD 2–15 |
| DL-Methionine | Amino acid balance | USD 2–12 |
| FOS and MOS | Digestive support | USD 5–30 |
| Probiotics or postbiotics | Gut support | USD 5–50 |
| Antioxidants | Freshness and fat protection | USD 3–20 |
| Palatants | Taste and smell | USD 20–120 |
| Fish oil | Omega-3 and coat support | USD 10–80 |
| Yucca extract | Stool-odor control | USD 1–10 |
| Joint-support ingredients | Joint-support positioning | USD 5–50 |
How did we estimate these costs?
We based these working estimates on common dry pet food inclusion levels and general bulk ingredient pricing.
However, actual costs may change because of:
- dosage;
- ingredient grade;
- supplier;
- order volume;
- country of origin;
- exchange rate;
- testing requirements;
- target-market rules;
- raw-material price changes.
In addition, buyers should not simply add all the figures together. A premix may already contain several nutrients, while the main ingredients may provide part of the required nutrition.
For a wider explanation of formula, packaging and manufacturing costs, read our private label pet food cost and MOQ guide.
A real formula example from Pet Secret
One of our cat food formula concepts combines chicken, pigeon and rabbit as its main animal-protein sources.
To complete the formula, our formulation team also uses:
- taurine for nutritional balance;
- FOS and MOS for digestive support;
- fish oil for omega-3 fatty acids;
- rosemary extract for freshness protection;
- DL-Methionine for amino acid balance;
- vitamins and minerals for complete nutrition.
Each ingredient has a specific job.
For example, taurine supports essential cat nutrition, while rosemary extract helps protect the fats. Meanwhile, FOS and MOS support the digestive system.
We do not add these ingredients simply to make the label look more premium. Instead, our formulation team checks how they work with the meat, fat, fiber and other parts of the recipe.
Because the formula contains pigeon, raw-material control also matters. Learn more about our Farm-to-Bowl poultry and pigeon supply chain.
Do more additives mean better pet food?
No. A longer ingredient list does not automatically mean better nutrition.
Instead, a good formula should use:
- the right ingredient;
- for a clear reason;
- at the correct amount;
- with suitable quality control;
- under the rules of the destination market.
The complete formula matters more than one fashionable ingredient.
For example:
- probiotics cannot correct poor-quality raw materials;
- fish oil cannot repair an unbalanced formula;
- palatants cannot make an unsafe product acceptable;
- glucosamine should not serve only as label decoration;
- antioxidants cannot replace good packaging and storage.
In short, buyers should focus on the result rather than the length of the ingredient list.
What about hydrolyzed protein?
Manufacturers make hydrolyzed protein by breaking larger proteins into smaller parts called peptides.
As a result, hydrolyzed protein may support:
- easier protein digestion;
- sensitive-digestion formulas;
- better ingredient use;
- selected low-allergen product concepts.
However, hydrolyzed protein does not make every formula completely hypoallergenic.
The final result depends on:
- the protein source;
- the level of hydrolysis;
- the complete formula;
- production controls;
- cross-contact controls;
- finished-product testing.
Pet Secret uses a Siemens-controlled process for selected hydrolyzed-protein applications. Read our guide to enzymatic hydrolysis in pet food for a clearer explanation.
How should private label buyers check additive safety?
Before approving a formula, buyers should request:
- A complete ingredient list.
- A complete additive list.
- The planned amount of key functional ingredients.
- Supplier specifications.
- Certificates of Analysis where needed.
- Confirmation of legal use in the target market.
- A finished-product testing plan.
- Shelf-life and storage information.
- Evidence supporting functional claims.
- Confirmation of the selected nutritional standard.
- Batch and traceability controls.
- Packaging suitable for the formula.
Furthermore, buyers should evaluate more than the additive list. Raw materials, production, testing, packaging and storage all affect product safety.
Use our pet food quality control checklist when comparing manufacturers.
What should buyers provide before requesting a quotation?
Before requesting a private label quotation, prepare the following information:
- cat food or dog food;
- life stage;
- dry, wet, freeze-dried or treat;
- target protein and fat;
- preferred meat sources;
- required functional benefits;
- ingredients that must be included;
- ingredients that must be avoided;
- target retail price;
- package size;
- expected order quantity;
- destination country;
- required product claims;
- expected launch date.
With this information, the manufacturer can select useful additives without creating unnecessary cost.
Our private label pet food process FAQ explains the full development process.
How Pet Secret develops private label formulas
Pet Secret Biotechnology Co., Ltd. provides OEM, ODM and private label pet food manufacturing in Linyi, Shandong, China.
Depending on the product, our formulation team can work with:
- vitamin and mineral premixes;
- taurine and essential amino acids;
- digestive-support ingredients;
- antioxidant systems;
- palatability systems;
- fish oil and coat-support ingredients;
- joint-support ingredients;
- hydrolyzed-protein options;
- target-cost formula adjustments.
In addition, our manufacturing capabilities include:
- more than 30 commercially used formulas;
- fully enclosed automated production;
- approximately 11,000 metric tons of monthly dry-food capacity;
- HACCP management;
- ISO 9001 quality management;
- ISO 22000 food-safety management;
- GACC export registration within the applicable scope;
- poultry and pigeon raw-material resources;
- Farm-to-Bowl traceability;
- batch testing and COA support based on project requirements.
Our standard MOQ generally starts from 5 metric tons per product. However, the final requirement depends on the formula, product type and packaging.
Frequently asked questions
Are all pet food additives artificial?
No. For example, fish oil, rosemary extract and mixed tocopherols come from natural sources. Other additives use controlled production methods to provide a stable nutrient level.
Are pet food additives harmful?
Approved additives used at the correct level are not automatically harmful. Instead, safety depends on the ingredient, dosage, purpose, quality and target-market rules.
Why does cat food need taurine?
Cats cannot produce enough taurine by themselves. Therefore, complete cat food formulas normally contain taurine to support the heart, eyes and nervous system.
Can dry pet food be made without preservatives?
Some dry foods use antioxidants instead of traditional preservatives. However, manufacturers must still protect fats and oils from oxidation.
Do additives greatly increase the product price?
Some additives have only a small cost effect. On the other hand, premium palatants, fish oils, probiotics and branded functional ingredients may increase the price more noticeably.
Can buyers select their own additives?
Yes. Nevertheless, the manufacturer must check dosage, nutritional balance, production stability, safety and legal use before approving the ingredient.
Can the same formula be sold in every country?
Not automatically. Ingredient rules, permitted levels, labels and product claims may differ between markets.
Does a longer additive list mean higher quality?
No. The purpose, quality and dosage of each ingredient matter more than the total number of additives.
Can Pet Secret customize the additive system?
Yes. We can adjust the premix, digestive-support ingredients, palatants, antioxidants and selected functional ingredients according to the product goal and destination market.
What is the MOQ for private label pet food?
Our standard MOQ generally starts from 5 metric tons per product. However, formula and packaging requirements may affect the final minimum order.
Final takeaway
Pet food additives are useful formulation tools. When manufacturers select them correctly, they can improve nutrition, freshness, taste, digestion and product stability.
However, private label buyers should not choose an additive only because it is popular or looks attractive on the label.
First, define:
- the pet’s nutritional needs;
- the main product benefit;
- the target customer;
- the expected retail price;
- the destination market;
- the legal requirements.
Next, select only the ingredients that provide a clear and useful benefit.
Ultimately, a simple, balanced and well-tested formula usually offers more value than a complicated formula filled with expensive ingredients that customers do not understand.
To discuss a cat food or dog food project, contact Pet Secret Biotechnology. Please include your product type, target formula, package size, destination market and estimated order quantity.