Need an alternative to antibiotics? PhytoMast™ has been extensively tested and shown to be a safe, natural alternative for udder health.

  • Questioning the wisdom of using antibiotics for all cases of mastitis? 
  • Considering treating dairy cows for mastitis more naturally?
  • Want your dry cows to freshen with lower somatic cell count?


  • Scientifically tested natural treatment for milk quality.
  • All-natural plant-based formula, now also available with Cinnamon Bark Oil (CBO). CBO has been shown in studies to dissolve biofilms surrounding some germs associated with dairy cows.

Order 2 boxes, get a free organic dairy cow care book + free shipping!

Order 12 boxes, get a free consult with Dr. K, a free book + free shipping!

The secret to antibiotic-free dairy health, trusted by hundreds of organic dairy farmers across the US
“Essential oil of thyme at 3% had consistent antibacterial activity against the 3 mastitis-causing pathogens tested.” (Mullen, K.) Journal of Dairy Science
A veterinary-formulated, non-prescription device to cleanse the teat.

Plant-based technology, and it's in every tube of PhytoMast™.

And it’s very different from the common methods you’re likely familiar with because of how it corrects poor milk quality by using expertly combined plant compounds that have proven anti-bacterial, anti-inflammatory, and analgesic effects to treat and prevent mastitis in dairy cows … without triggering antibiotic tests.

Trusted by hundreds of dairy farmers across the US and Canada!

As you’ll see, it’s given to the cow with the same administration technique you’re already using to treating a cow with mastitis and other milk quality issues and you can rest assured that the plant ingredients are completely safe. 

Best part of all, we all know mistakes can happen and if people accidentally put milk from the treated cow(s) into the milk tank, these plant-based technology methods will not trigger an antibiotic residue test!

And you can enjoy improved milk quality regardless of whether or not you have any experience with natural medicines. Dr. K’s formulas blend the best of botanical medicine into your cows’ veterinary care.

Hi, my name is Dr. Hubert Karreman. I’m a dairy veterinarian with 30 years in-the-trenches experience with organically managed dairy cows.

Due to strict USDA regulations, I’ve developed a handful of practical and natural treatments for the thousands of organic dairy cows I’ve successfully treated without antibiotics. I have been invited to speak at over 100 farmer and veterinary conferences on what I do. I’m the vet who other veterinarians, researchers, and students come to when they have questions about treating commonly encountered diseases without antibiotics. I’ve also published three books on natural treatments for dairy cows and have written chapters on natural medicine in veterinary textbooks.

The fact is… there’s no better way than right now for you to have cows with problematic milk get cleared up by using natural methods that have been scientifically shown to improve milk quality — all without antibiotics! Using just 2 applications, 12 hours apart, for lactating cows or just once at dry-off, PhytoMast™ is better than antibiotic treatments with worrisome residues.

The reason why this method works is simple: each living plant has hundreds of compounds in it with valuable medicinal value that provide a broad attack against germs. Antibiotics, on the other hand, provide only a narrow “sharp-shooter” type attack: if you don’t pick the right antibiotic, there will be absolutely no response and you can quickly create antibiotic resistance. Not so using plants. Plants also provide soothing anti-inflammatory and pain-relieving analgesic effects along with their anti-bacterial effects. Combining the right plants with the right manufacturing process, PhytoMast™ delivers effective treatments from various angles. Additionally, due to the hundreds of compounds in each plant, it is extremely difficult, if not impossible, for germs to create resistance like they do with antibiotics.  For instance, PhytoMast™ combines the anti-bacterial effects of Thyme (Tsai, 2011) and Olive oil (Nazarro, 2019) with the anti-inflammatory effects of Dahurian angelica (Kang, 2008) and Chinese licorice (Genovese, 2009) along with the immune-modulatory effects with Vitamin A,D and E (Michal, 1994, Lippolis, 2011, Tangerdy, 1990) and Chinese angelica (liu, 2003), and finishes the formula with the analgesic effects of wintergreen (Poppenga, 2002). In having a solid scientific basis, you can be confident in starting with this new approach to commonly encountered problems.  

And that’s just the beginning. There a number of studies supporting the above – done on real dairy cows on real farms under strict research requirements….

In a study on a 1000 cow organic farm, the researchers found “…there was a faster recovery for the treatment group compared to the control group…” (P. Pinedo, Canadian Veterinary Journal 2013 May; 54(5): 479–484.)

So many times we hold off on using antibiotics for mastitis (organic farms use none) because we’re not sure if we have the right antibiotic and also the stress of associated residues. So we hope that the animal will clear up on it own. But by using Dr. K’s plant-based method, we can jump in faster to help the situation rather than standing by and doing nothing. Reaching first to time-honored plant medicines instead of antibiotics to help the animals in your care makes sense, especially since the natural medicine has been shown to have such a broad-spectrum of action. And it gets better… PhytoMast™ is applicable not only to lactating cows but also to cows at dry-off. In a study led by Dr. Keena Mullen, the only person in the US to have a PhD in the non-antibiotic treatment of mastitis, she wrote “the efficacy of the herbal products was similar to that of conventional therapy, and the herbal products had no apparent adverse effects.” (K.A.E. Mullen, Journal of Dairy Science Volume 97, Issue 6, June 2014, pgs. 3509-3522). In a follow-up study, she found that “the cure rate of Phyto-Mast™ + Orbeseal was very close (78%) to the 80-90% cure rates reported for antibiotic and teat sealant dry cow therapy” (NC State University PhD thesis “Evaluation of Herbal Oils in Various Preparations for Treating Mastitis in Dairy Cattle.” Keena A.E. Mullen, 2013) This non-antibiotic PhytoMast™ allows you to use sound science in taking care of your cows before they take their vacation from lactation. When you tuck them in with this method, you can rest easier. Every university and regulatory framework is pushing farmers to reduce the use of antibiotics, and PhytoMast™ is the most scientifically sound method on the market to do so. The marketplace will cheer you on. And here’s what else makes PhytoMast™ unique…. University research has found that “Based on dilution of the products in bovine milk at physiologically achievable levels, phytoceutical products tested at levels expected after treatment do not cause positive test results for the Delvotest P nor do they interfere with the Charm SL Beta-lactam test in detection of various antibiotics.” (K.A.E. Mullen, et. al Vet Rec Open. 2017; 4(1): e000214. Published online 2017 Aug 11).

Get your start with PhytoMast™ right now with this special offer. Cleaner milk with no antibiotics!

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