fish oil and aple cider vinegar supplements

Question

my dogs   QUESTION: Hi, I have been adding fish oil to my dogs' dry food (Origen) and a bit of Apple cider vinegar to their water. I cannot complain about their health, they look good and healthy. However I have doubts if I can do any damage to them with these supplements even though I add them in moderation. My dogs are both beagles. Thank you in advance for your reply,
Lilia

ANSWER: Hi Lilia,

Your dogs are very cute! I always like to see pictures of them here. I have no problem with the vinegar, in very small amounts if they don't mind it; I'm not personally convinced of it's usefulness in the diet, but I can't see in most cases it does any harm either.
Fish oil can be an excellent supplement; if you can tall me the brand you're using and how much, I can comment further. With higher levels it's prudent to add a little Vitamin E as well.

There are many supplements  like to use in addition to commercial diet and fish body oil is one of them, but the brand should be one I know well and the amount is critical.There are some conditions that contraindicate additional Omega3 (bleeding disorders) but these are rare, and your vet would have advised you about diet (I assume!)

Let me know more and I can help you more precisely.
All the best, Catherine

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QUESTION: Thank you for your reply. I buy Norvegian Cod Liver Oil in Pharmacy or Bulk Store, liquid, different brands, whatever is available. I add about one coffee/tea spoon once a day to their food. Recently they both had their blood tests and they came out good, including liver enzymes. So I guess I can go on with it? Apple cider I add half of the tea spoon and not every day.

ANSWER: Good brand, but can you tell me the content per tsp? Look at the bottle and it will list EPA and DHA in milligrams. That`s what you can overdo, if you give me that information,  and their weights, I can help more precisely.

All the best, Catherine

---------- FOLLOW-UP ----------

QUESTION: it just says vitamin A -4000IU, vitamin D3 -400 IU

Answer
That's cod liver oil, not fish oil! And you should not be adding it to kibble at all. Vitamins A and D can be toxic in high levels. Please stop using this product and find a fish BODy oil - such as salmon oil - instead.
Going off for the night but I had to answer this asap. TOO MUCH VITAMIN! Never add cod liver oil to kibble - please.
:(
Catherine