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Willow’s survival story: Easter Lilies cause acute renal failure in cats and Peace Lilies cause oxalate issues

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willow lilies oxalate

Be aware that Easter Lilies (pictured above) can cause acute renal failure in cats and Peace Lilies (pictured below) can cause calcium oxalate issues.

Lindsey Warnock shared these pictures and the story of her kitty Willow on Facebook and kindly gave me permission to share this on my blog as a caution for anyone with cats:

On Thursday Willow played with lilies in my office. She didn’t eat anything. She only batted at them and got the pollen all over her before I shooed her away. We laughed initially but thank God something in my head told me to google it.

I read, “All parts of the lily – including the stem, leaves, petals, stamens and pollen – are poisonous to cats. Even minor exposures (cat chewing on a leaf or getting pollen on his or her haircoat or whiskers) can be fatal.”

“Cats typically do not survive, even with aggressive therapy (such as dialysis).” [from this site noliliesforcats.com]

I freaked out. Threw her in the shower (that wasn’t fun) and immediately took her up to Blue Pearl Emergency & Specialty Hospital. Due to covid, they came and took her from my car and after her exam the ER doctor called me. She said her prognosis was very poor because they found the pollen around her mouth and on her tongue. She even said, “in my experience I’ve never seen a cat survive lily poisoning. Most owners only realize there’s an issue when the cat is sick and by that point it’s just too late”

Insert hysterical crying here. She said that her only saving grace may be that we sought treatment quickly but realistically she might not make it through the night. They made her throw up, gave her activated charcoal and aggressively treated her with fluid therapy and other meds.

Thank God after 2 days in the hospital, she pulled through!!! We will go for a recheck soon but her doctors are confident her organs didn’t suffer any long term damage from the poisoning.

I can’t tell you the intense guilt I felt and still feel for buying those stupid flowers. I felt like a murderer, terrible fur mom, terrible person. I’ve had cats my entire life and have never heard of lily poisoning. The vet’s response to that was “most people only find out the hard way” The doctors, technicians and staff at Blue Pearl really are the best! They saved our baby.

Please SHARE this with your friends. I would hate to see anyone go through this!! Thank you all for your support during that gut-wrenching 2 days. We’re thankful our girl is back home! No. More. Flowers. Ever.

This was a few weeks ago and when I checked in I see that Willow is still doing well!

This article, Toxic Plants by Tina A Wismer, DVM, DABVT, DABT, shares the toxic effects of the lily (pictured above) Willow brushed up against:

Lilies of the Lilium and Hemerocallis sp.have been shown to cause acute renal failure in the cat. Some examples include: Easter lilies (L. longiflorum), tiger lilies (L. tigrinum), rubrum or Japanese showy lilies (L. speciosum, L. lancifolium), and day lilies (H. species). The toxic principle is unknown, but is known to be water soluble. Even minor exposures (a few bites on a leaf, ingestion of pollen, etc.) may result in toxicosis, so all feline exposures to true lilies should be considered potentially life-threatening and should merit aggressive clinical intervention.

Peace lilies are also an issue for cats and dogs – due to oxalates

Peace Lilies are also harmful for cats and dogs because they contain calcium oxalate crystals. Fortunately they are not deadly.

peace lilies

This Toxic Plants article also lists common houseplants – including Philodendron spp. and Spathiphyllum spp. or Peace Lily – that contain insoluble calcium oxalate crystals, describing how they are also harmful for cats and dogs:

The calcium oxalate crystals look like needles, and when the plant is damaged these crystals embed themselves in the oral cavity. Clinical signs include hypersalivation, vomiting and possible swelling of the pharynx (obstruction is rare). Treatment includes milk or water to rinse mouth. Clinical signs usually resolve within 24 hours with no lasting effects.

Here is an image of calcium oxalate crystals called raphides. You can see why these needle shaped calcium oxalate crystals found can inflict pain and cause harm. There are many different shapes of calcium oxalate crystals and this is just one example.

Raphides
Raphides purified from kiwifruit. Raphides, needle shaped calcium oxalate crystals, were collected from kiwifruit homogenate through heavy media separation using a dense CsCl solution. (A) The SEM image of purified raphides (x400). Shared from: Synergistic Defensive Function of Raphides and Protease through the Needle Effect via Creative Commons.

This article, Easter Lilies and Cats do not Mix! shares more about the two different groups of lilies, “true” lilies (like Easter Lilies) and “benign” lilies (like Peace Lilies). Author, Karen Christopherson, DVM, CVA says “It is best to skip lilies altogether in households where cats live.”

Be sure to read the entire Toxic Plants article for a list of all plants that are harmful and severely toxic to cats and dogs. I had no idea there were so many!

I am not a vet and am not an expert on any of this so please do check in with your own vet.

Oxalate questions I have

With regards to oxalates I have these questions I’d love to know the answers for:

  • Do all cats and dogs have an inborn ability to tolerate calcium oxalate crystals like those found in the Peace Lily?
  • Would cats and dogs also have issues (especially severe pain in their joints, bladder issues and increased anxiety) if they were to ingest high oxalate foods like spinach, beets, sweet potatoes, soy and kiwi fruit?
  • Given that there are some human “antidotes” for helping with acute exposure symptoms after ingestion of high oxalate foods (like spinach, rhubarb, nuts, kiwi fruit etc) in susceptible individuals, I am curious to know if some of these could be used with cats and dogs too: calcium citrate, magnesium citrate, vitamin B6 and/or an epsom salt bath?
  • Do humans with dietary oxalate issues have problems working with some of these indoor plants (like Peace Lilies) when planting them, pruning and even getting pollen on the skin?

Are you aware of these harmful effects of plants for cats and dogs? Let us know if you experienced something similar to what happened to Willow or with a plant like the Peace Lily. What advice did your vet share with you and how is your cat or dog doing now?

If you have answers to any of the above questions please do share too.

Feel free to post your questions here too.

We appreciate Lindsey for letting me share this and say well done for your quick thinking!

Vitamin C causes oxalate formation resulting in pain, anxiety, and insomnia (when there is a defect in ascorbic acid or oxalate metabolism)?

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vitamin c and oxalate

Supplemental vitamin C has many exceptional health benefits and causes no issues for a large majority of individuals. However if you have dietary oxalate issues, doses of vitamin C above 100mg to 250mg per day may be problematic and trigger pain, anxiety, insomnia, bladder issues and more. This blog, Coronavirus and vitamin C for immune support: new pain or more severe pain due to oxalate issues?, is part 1 of the series  which sets the scene and is a fact-finding article. Part 2, Oxalate crystal disease, dietary oxalates and pain: the research & questions (part 2), covers the research behind oxalate crystal disease.

Today we look at some of the research on vitamin C/ascorbic acid being a possible trigger for the formation of oxalates in certain instances. This paper, No contribution of ascorbic acid to renal calcium oxalate stones, has a good summary:

Even though a certain part of oxalate in the urine derives from metabolized ascorbic acid, the intake of high doses of vitamin C does not increase the risk of calcium oxalate kidney stones due to physiological regulatory factor: gastrointestinal absorption as well as renal tubular reabsorption of ascorbic acid are saturable processes, and the metabolic transformation of ascorbic acid to oxalate is limited as well.

But in the large-scale Harvard Prospective Health Professional Follow-Up Study, those groups in the highest quintile of vitamin C intake (> 1,500 mg/day) had a lower risk of kidney stones than the groups in the lowest quintiles.

This paper does however have this precaution:

Recurrent stone formers and patients with renal failure who have a defect in ascorbic acid or oxalate metabolism should restrict daily vitamin C intakes to approximately 100 mg.

My proposed interpretation of this

I’d like to propose an interpretation of this, based on what we know about oxalates. These are the individuals who should restrict daily vitamin C intakes to approximately 100 mg per day (or up to around 250mg per day – more on the range below):

1) If you are someone who is a recurrent stone former or is in renal failure with a defect in ascorbic acid or oxalate metabolism

2) If you are someone with dietary oxalate issues i.e. you have similar symptoms when consuming vitamin C as you do when consuming high oxalate foods. Could we consider that you be classified as having “a defect in ascorbic acid or oxalate metabolism?” I would say yes.

I’ve added #2 above because we need to keep in mind that many individuals who have issues with dietary oxalates are not necessarily stone formers and nor do they have renal failure.

Research is also lacking in this area as you can read in Oxalate crystal disease, dietary oxalates and pain: the research & questions (part 2).

An omission of the 100mg per day restriction

I would like to point out that the study mentioned above was referred to in an article on Dr. Andrew Saul’s site but for some reason the section about the 100mg daily restriction was omitted from the article. It may have something to do with the fact that the author firmly believes that no-one has oxalate issues with any dose of vitamin C. In fact, he even jokingly makes this comment in the article:

Is some clown still trying to tell you that vitamin C is somehow dangerous? Or that you shouldn’t take more than 200 mg/day?

If you are someone who does experience pain when consuming vitamin C (like I do), I’m pretty sure you don’t find this comment amusing.

Vitamin C intake leading to pain, anxiety, insomnia, low mood and bladder issues

Here is some additional feedback from a question I posted on Facebook. This is the question I posted:

I’ve been sharing here about vitamin C being an issue for some folks who have oxalate issues and seeing an increase in pain. I’d love to hear if you upped your vitamin C intake for immune support and saw your mood take a dive or your anxiety increase or your sleep get worse? Vitamin C typically helps because it’s a cofactor for making neurotransmitters like serotonin and GABA and tyrosine but too much of a good thing is not good! Did you also have increased or new pain (as well as anxiety, low mood and insomnia)?

Here are some of the responses from folks who shared about pain, anxiety, insomnia, low mood and bladder issues:

  • Fay shared this: “Yes increased pain, insomnia and anxiety with increased C and mouth sores to boot. Taking liposomal C and Ester C to boost antioxidants for health reasons and pain in elbows and knees. Not sleeping well at all either.”
  • Lica shared this: “Yes increased anxiety…never thought of it before…felt a bug coming on and took c for a few days…yup anxiety.”
  • Nicola shared this: “Increase in body pain, burning bladder, sleep affected and low mood ( not something I usually suffer with). I was taking liposomal C then increased the dose and also added Ester C as I had symptoms of covid. I was taking 1-2g a day of liposomal previously as a preventative and increased to 4g plus 4g of Ester. Only did it for a couple of days. Stopped three days ago and pain is starting to subside but no sleep last night. So I will continue with a break for now and add a very low dose again perhaps of Ester C and see how I go.”

I really appreciate these women sharing their experiences so we can all learn!

What is the upper limit of vitamin C for individuals with dietary oxalate issues?

I’m sure you’re wondering about the various dosages mentioned: the study mentions 100mg per day,  Dr. Andrew Saul’s clown comment says 200mg per day and Susan Owen’s TLO Facebook group recommends no more than 250mg per day. You’ll need to figure out what the upper dose of vitamin C you can tolerate – by trial and error.

The big disconnect is always the mention of kidney stones

This is one of many similar studies on the topic of ascorbic acid/vitamin C and oxalates. There are also many studies and articles stating that vitamin C does NOT play a role in the formation of oxalates and cause kidney stones. The big disconnect is always the mention of kidney stones. The missing piece – in the research and in many articles – is that you can have issues with dietary oxalates AND vitamin C when there is no kidney disease/no kidney stones.

I have a number of additional oxalate blog posts planned so please let me know what else you want to hear about.

Here are the 2 previous blog posts on this topic of oxalates, vitamin C and pain:

Please also share your vitamin C oxalate story and how you figured it out (and if you react in a similar way to dietary oxalates).

Let us know what your ideal dose is (and which dose caused issues) and what form of vitamin C and product name you use/used. Feel free to share if you also have a history of kidney stones.

Feel free to post your questions here too.