Oxbow Vitamin C Supplement Review

Product: Oxbow Natural Science Vitamin C Supplement for Small Animals           

Amount: 60 Tablets

Price: Click link below for the latest price


Today I am reviewing an important supplement that will give your guinea pigs some extra vitamin C. Its always vital that they get enough, to be their normal selves. These tablets also keep their teeth in good order, as they chew hard to break them up. Now obviously I look to my guinea pigs to see if they like what they see or eat, so to speak.

The tablets sure hit the spot as it gets gobbled down and have got good quality ingredients in. Each guinea pig has one of these a day, so between my four, I order on average enough to last 6 months. Every tablet is an oval shape and all 60 come in a resealable packet or may come in a plastic container, depending on how many you order, but I can’t be sure on this.


Timothy grass, barley flour, oat groat flour, cane molasses, l-ascorbyl-2-monophosphate (vitamin C), flax seed meal, brewers dried yeast, xanthan gum, fat product, mixed tocopherols, rosemary extract

Nutritional information

Crude Protein (Minimum) – 10%                                         Crude Fibre – ranges from 9 to 12%

Crude Fat (Min) –  5%                                                            Moisture – 8%

Ash – 8%                                                                                    Calcium – ranges from 0.50 to 0.70%

Phosphorus – 0.50%                                                               Copper – 9mg/kg

Ascorbic Acid (Vitamin C) – 25mg

Now if you are a bit confused by the nutritional info above, don’t worry I will explain. What we are looking for whether that is supplements or hay is always low calcium, fat and phosphorus. If these are too high, it makes it unhealthy for guinea pigs and contributes to problems with the digestive system as well as other diseases. Higher protein as you know will help the brain and, fibre to keep a digestive system working normally. The main component of these tablets is the amount of vitamin c, because that is the point of them, so that’s all good with these.

Oxbow will always have all the information you need to know about on the packets. This is mandatory, just like it is for human foods. My girls beg me for these every day and it gives me peace of mind that they are getting enough vitamin c. They actually smell nice and supplements were recommended to me from a veterinary nurse on the website justanswer and that’s how I got these. The price per packet is quite expensive, but worth it as they will hopefully like them and its giving them what they need. But could be a little cheaper as they are needed every day of the year.

Sometimes my guinea pigs almost chuck a tablet up in the air with their mouth or move the head upwards, just to break into it, quite funny to see 🙂 The colour of them is an oatmeal brown. What is great, is the long expiry date if unopened, which is 24 months. Even when opened you still have 60 days to use them in and would still be used up with two guinea pigs within the time.

My main bit advice for you, is to never use liquid supplements, as the vitamin c decreases very quickly in a water bottle. The guinea pigs may be put off, from drinking their water, as it has been mentioned by some owners, which is dangerous.

Let’s sum up the good and bad points =-)

Pros 🙂                                                   pros and cons people

  • Good ingredients
  • Good source of Vitamin C
  • Hard texture, so gets them really using their teeth
  • Acceptable expiry date

Cons 🙁

  • Could be a little cheaper (please note prices will fluctuate at times) 


Nutrition – 10 out of 10

Price – 7 out of 10

Pack size – 10 out of 10

Overall Rating – 9 out of 10

Please leave a comment below and I will reply back as soon as possible. Perhaps your guinea pigs have these, what do both of you think of them?

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16 comments found

  1. Hey!

    I have been searching for a new food source for my guinea pig. I wasn’t sure what was right to buy.
    Thanks for breaking down all the details and being honest!
    I think the pros far outweigh the cons because i’d much rather pay more for healthy food than pay less for unhealthy food.

    Thanks again,


    1. Hello, yes paying more for the healthier foods is worth it. Thank you for stopping by Russell and I really do recommend these Oxbow supplement tablets for your guinea pigs. All the best.

  2. Thanks for this amazing review! I actually like that there’s 60 tablets and they don’t cost that much either. Although you say they could be a little cheaper, there are others more expensive. These provide a good source of Vitamin C and that is a huge deal. My guinea pig will absolutely love these, so thanks a lot.

    1. Hello Brandon, there are quite a few tablets included in a pack, which is great. Your guinea pig will definitely love gobbling one of these every day. I am pleased you have decided to get these for your guinea pig.

  3. Wow, never knew there was a difference in specific nutritional requirements for smaller animals. I just assumed they needed less of everything. This was extremely helpful information and a great review. Thank you!

  4. Hi Eden- Another informative post- Great work
    Love guinea pigs and was told if you keep chickens, it is great to house guinea pigs in the coop as it keeps rodents away from the chickens

    1. Thank you Vicki, I had never heard of that before. Housing guinea pigs and chickens together is risky, if thats what you mean. Because of passing infections and mites, also chickens may peck at the guinea pigs.

  5. Wow it never occurred to me that guinea pigs need vitamin C supplements too! But that makes sense, if it’s beneficial to humans, then why not to other living creatures as well… I like it that this product has other great ingredients in it, like grass, barley, oat, flaxseed. This is going to boost the guinea pigs’ health up by a few notches, lucky ones. 

  6. I never knew there was so much to know about the health of our guinea pig, and I am so glad we came upon your website.  My kids love our little Scamper, and I want to make sure he is happy and healthy as well!  I’m definitely going to give him the Oxbow Vitamin C Supplement, because I take supplements, and the kids take supplements, so I obviously find value in making sure we are all getting the proper nutrition for optimal health.  Thanks for a great website with such great information on keeping our guinea pig healthy!

    1. Your Guinea Pig will really benefit from having the vitamin c supplement, they will probably eat them in a second like mine do. Thank you Babsie, I really appreciate your comment. 

  7. Eden,

    Thank you I learn something new each and every time I visit your website for my grandson’s guinea pigs!  I was totally unaware that they required Vitamin C Supplements but now that I know he will be getting these for his two little guys.

    I like that they come with an expiration date far enough out that you can order in bulk saving time with reordering each and every month.  The fact that you covered it helps with their teeth and chewing also is something I am sure many are not aware of.

    Thanks again,


    1. Hello Susan, 

      The vitamin C supplements just make sure that they are getting the vitamin c. They do love eating them and the long expiration date is very handy. 

      Thank you for stopping.


  8. I’ve tried other Vitamin C supplements before but I am not sure they were very good. They were cheaper, sure, but I didn’t trust the brand so much. I kept buying it because it was the only one I knew of! 

    Thanks to this article I know that I have another option and maybe I will try it out. I would be willing to spend a few more bucks if it for a good quality product! After all this for the health of two little creatures I really care about. 

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