Vitamin C in animal supplements: which form should you use, and for which animal?

Vitamin C is a classic in human supplements, but it also plays an important role in the world of animal supplements. From boosting immunity to joint support, this antioxidant has a wide range of applications, but the type of vitamin C you use makes a significant difference. In this blog post, we provide an overview of: the role of vitamin C in animal supplements for different species, the available forms and their technical properties, and how you, as a brand or developer, can make the right choice.

When is vitamin C useful in animals?

Although most animals produce vitamin C in their livers (unlike humans), there are situations where supplementation is useful. Consider:

  • Dogs & cats:
    In cases of stress, illness, old age, or recovery from exercise, extra vitamin C can help support the body. Vitamin C is also often combined with other active ingredients in skin and coat formulas, or to support joints.

  • Horses:
    Sport horses, in particular, can benefit from supplementation, especially during intense exercise or oxidative stress. Vitamin C is also a valuable addition to detox and immunity formulas.

  • Other animal species (such as guinea pigs and certain birds) cannot produce vitamin C themselves and are completely dependent on diet or supplementation.

What forms of vitamin C are there?

There are several forms of vitamin C available for supplementation, each with their own properties, stability and applications:

  • Ascorbic acid
    The most well-known and pure form of vitamin C.
    Advantages: High concentration, powerful antioxidant
    Disadvantage: Low pH, which can be stressful for animals with sensitive stomachs
    Application: In powders and gummies, or for short-term use.
  • Calcium ascorbate
    A buffered form, less acidic and more tolerable.
    Benefits: Gentle on the stomach, suitable for sensitive animals.
    Application: In chewable tablets, chews, and powders for dogs or cats.
  • Sodium ascorbate
    A highly soluble and gentle variant, particularly useful in liquid form.
    Advantages: Suitable for liquids and combines well with other ingredients.
    Application: Immunity liquids or recovery formulas for dogs and horses.
  • Stabilized vitamin C (such as ascorbyl monophosphate)
    More heat-stable, making it ideal for use in extruded feed or pet food.
    Advantages: High stability, even during processing
    Application: In kibble, snacks, or pet food with a functional character.

How do you choose the right shape?

The choice depends on several factors:

  • Animal species (and their tolerance or need for vitamin C)

  • Purpose of the supplement (immune, skin, joints, recovery…)

  • Administration form: liquid, powder, chew, paste, gummy…

  • Processing requirements such as heat, pH or shelf life

At Nutriliq, we help brands make informed choices, both in terms of ingredients and design. Thanks to our experience in liquids, powders, soft chews, pastes, and gummies, we always find a solution tailored to your target audience and positioning.

Curious about the possibilities?

Let us help you develop your vitamin C formula, or explore how we can integrate it into a broader immunity or recovery solution. Contact us for a free consultation.