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Just like humans, dogs need a healthy diet to keep themselves in tip-top shape. And as a dog owner, you’re in charge of your dog’s diet.

So, when looking for different foods to feed your dog, make sure to find ones that can provide them with the nutrition and sustenance that they need. Among all the different vitamins and nutrients your dog needs, vitamin C is one of the most important.

And in this guide, we’ll go through a couple of different natural vitamin C sources for your dog and why it’s important for your dog’s health.

Best Natural Sources of Vitamin C for Dogs 7

Read on to learn more about some natural sources of vitamin C that you can feed your dog.

Why Does My Dog Need Vitamin C?

One of the biggest reasons vitamin C is crucial for your dog’s diet is because it’s an immune system booster. Vitamin C plays a huge role in keeping the immune system functioning properly and enables the body to fight off disease and infections.

If you have a healthy dog, they can actually produce vitamin C from their liver. The dog’s liver can make vitamin C by extracting raw ingredients from their food. However, if you really want to maintain your dog’s health, it wouldn’t hurt to include a couple of vitamin C boosters in their regular diet.

There are pure vitamin C supplements out there available for dogs. However, in most cases, dogs can get all the vitamin C they need from their food. So, if you make sure to feed your dog a healthy diet with all the vitamins and nutrients they need, you don’t have to worry about buying pure vitamin supplements.

Best Natural Vitamin-C Rich Foods for Dogs

Best Natural Sources of Vitamin C for Dogs 8

If you’re looking to give your dog a healthy and natural diet, you shouldn’t neglect their need for vitamin C. Here are some common foods you can find in the kitchen and grocery store that have high levels of vitamin C and could be great for your dog;


As the saying goes, “an apple a day keeps the doctor away”. This has rung true for humans for a long time, and it also goes for dogs!

Why should you feed dogs apples?

Well, for starters they taste great! The natural sugars in apples are something a lot of dogs enjoy, so you won’t have a hard time feeding them to your dog. On top of that, they are packed with vitamin C, fiber, and vitamin A, all of which are good for your dog.

When feeding your dog apples, make sure to slice them into more digestible pieces. Additionally, apple cores have trace amounts of cyanide, so make sure to remove the core and seeds before feeding your dog apples.


Pumpkins are a great treat for dogs. They are packed with fiber, vitamin C, and vitamin A, which is why they’re a favorite for many dogs. Pumpkin is readily available in most grocery stores, so you won’t have a hard time finding it at all.

When it comes to feeding your dog pumpkin, you might need to cook it for the best result. Make sure to remove the skin and seeds before feeding them to your dog. When cooking pumpkin for dogs, make sure to not add any ingredients or spices.

One of the easiest ways to feed it to dogs is to cook it and turn it into a puree. From there, you can mix in a tablespoon or two into their meals and give them a vitamin C and fiber boost.


Best Natural Sources of Vitamin C for Dogs 9

Celery is a vegetable rich in many vitamins and nutrients. For starters, it has vitamin C, which plays a crucial role in keeping a dog’s immune system running fine. Additionally, it has vitamin B, A, and K while also having large amounts of potassium and fiber.

Not all dogs will enjoy the taste of celery, but if they do, you have an accessible, affordable, and healthy snack to feed your dog as a treat! Find out more here.


Cranberries are a great natural source of vitamin C and fiber. They are also low in calories, so you can feed them to your dog as a treat. You can feed your dog cooked, raw, frozen, or dried cranberries. With that said, cranberries do have a tart taste so your dog may not like them. And at times, cranberries aren’t the best treats for dogs.

So, when are cranberries bad for dogs? Since cranberries are high in sugar, they are bad for your dogs if you feed them too much. Too much sugar can lead to obesity, diabetes, oral health problems, and a wide variety of health issues in dogs. So, make sure to keep things natural and only feed your dog cranberries with no added sugar, which means stay away from cranberry sauces.


If you’re looking for a natural vitamin C booster for your dog, any of the options in this list will work great.

However, every dog has their own unique set of tastes and preferences. And what might be good for one dog may not be good for the other.

So, with that in mind, don’t be afraid to experiment with the different options on our list until you find an option that is healthy and tastes great for your dog. That way, your dog has a healthy snack that they love to eat.