Use this if your pet:

  • is nervous (eg. at shows)
  • is afraid (eg. Of thunderstorms)
  • is  moving house or changing owners
  • is a rescue pet

Serenity Formula

A natural pet supplement with Tryptophan amd Inositol

A blend of herbs, vitamins and minerals formulated to gently calm your pet in stressful situations, without causing drowsiness.

Natural dog supplements - Serenity Formula - Passiflora

Serenity Formula contains:

  • Brewer’s Yeast
    Brewer’s yeast (Saccharomyces cerevisiae) is a yeast and is the source of various vitamins and minerals.
  • L-Tryptophan
    A precursor to the ‘happiness’ neurotransmitter, Serotonin.
  • Inositol
    Inositol, a vitamin-like molecule, plays a role in the action of Serotonin which is believed to act as a mood stabiliser.
  • Chamomile
    Chamomile is a herb which soothes and calms.
  • Passion Flower
    Passion Flower is approved by Germany’s Commission E for ‘nervous unrest’.
  • Magnesium
    Animals deficient in Magnesium can show signs of nervousness, excitability and muscle tremors.

Analytical constituents:

  • Crude Protein (41%)
  • Crude Fibre (0.8%)
  • Crude Ash (7%)
  • Crude Oils and Fats (1.2%)
  • Moisture Content (2.4%)
  • Tryptophan (284 333 mg/kg)
  • Magnesium (1267 mg/kg)


Daily amount:

  • Small pets [ <10kg ]: 1/2 tsp
  • Average pets [ 10-20kg ]: 1 level tsp
  • Large pets [ 20-40kg ]: 1 heaped tsp (5g)
  • Giant breeds [ >40kg ]: 2 heaped tsps (10g)

A 200g tub will last one large dog 40 days.

Please take care:

  • Not for use during pregnancy or lactation.
  • Not to be used in conjunction with anti-depressant medication.
  • Store carefully as harmful to dogs in large quantities.
  • Discontinue immediately at any sign of adverse reaction.
  • This is a nutritional product and is not intended as a substitute for veterinary products or advice.

Join the discussion below … or visit us on



  1. Helene
    29th Jul 2019 at 5:18 am · Reply

    Hi there
    I bought Serenity with the idea of helping our 2 kitties when we are travelling, they are not so fond of car rides. Can Serenity be used in accute situations?

    • Beryl Shuttleworth
      23rd Aug 2019 at 3:12 pm · Reply

      Hi Helene. Yes, you can use it like this and some people say they see the benefit immediately. But, ideally, you should be giving a small dose on a daily basis.

  2. Name (required)Linda Neilson Oliphant
    21st Feb 2019 at 5:13 pm · Reply

    Hi there, I desperately want my cat to stop meowing with such a loud determination. I have never known a cat to be as vocal. It isnt a physical thing but seems to be attention related. Hope the product helps.

    • Beryl Shuttleworth
      21st Mar 2019 at 11:01 am · Reply

      I hope so too, Linda. Let me know…. It might be anxiety related, in which case, Serenity Formula will help.

  3. Chante
    28th Nov 2018 at 8:25 am · Reply

    My cat doesn’t want to eat her food when I put the serenity in it. How can I try it otherwise to give it to her. She also doesnt drink milk.

    • Savannah
      10th Dec 2018 at 7:58 am · Reply

      Hi Chante

      Most dogs and cats seem to enjoy the taste but every now and again, we seem to come across a fussy eater. 🙂 I have a cat that is a very fussy eater as well, so I feel your pain!

      I suggest trying a bit of wet food or something else yummy like peanut butter or yoghurt. This has worked for me.

      I hope this helps!

  4. Marsha
    30th May 2018 at 7:55 pm · Reply

    I found this at my local pick n pay and it worked really well. Thank you for the info!

  5. Diana
    30th May 2018 at 10:32 am · Reply

    Once again for the Serenity Formula, had Grace my rescue Greyhound cross. Extremely nervous about everything, very badly abused and dying.

    I was told about this formula, and we went though several months/years etc I persevered and now you cannot believe the difference in her. More confident, happier in herself etc. She is now 4yrs and she is the most beautiful animal ever, still nervous at times but not nearly as bad.

    Thank you so much for this wonderful formula. I have now got the other little girl on it now.

  6. Evette
    29th May 2018 at 11:53 am · Reply

    I started using Herbal Pet – Allergy Formula for my dogs (Staffie and Jack Russel) and it is working!!!
    I’ve spend a lot of money on products, but this is the first time, that I have found a product that truly works!
    It’s a joy to see them so happy and itch free…

  7. Storm
    5th May 2018 at 1:10 pm · Reply

    I have entered my dog in a show and would like to try the serenity formula to calm his nerves as he gets anxious around large groups of dogs. How would you recommend giving the powder and how long does it generally take to “kick in”?

    • Beryl Shuttleworth
      9th May 2018 at 12:42 pm · Reply

      Hi Storm. That is a very good idea. It should just help with his/her confidence and make the show a good experience for both of you. Start giving it about 4 or 5 days before the show. Good luck!

  8. Bettie Liebenberg (required)
    5th Apr 2018 at 2:03 pm · Reply

    Hi. I would like to try Serenity on my cat. How do I give it to her? In one dose or smaller doses throughout the day. Thanx

    • Beryl Shuttleworth
      12th Apr 2018 at 7:54 am · Reply

      Hi Bettie. It is up to you how you give it – just don’t exceed the daily dose. Sprinkle on the food – you might need to add a bit of moisture to make it stick. 🙂

  9. Louise
    27th Nov 2017 at 11:17 am · Reply

    I own a particularly yappy pug who has been on Serenity Formula. He is SO much better since he has been on the product. He still yaps a bit but nothing like he used to. Thank you Herbal Pet!

  10. Dezi
    22nd Nov 2017 at 11:47 am · Reply

    I am interested in purchasing the Serenity Formula for my Beagle who is just over a year old. We have just moved to a temporary new home for 2 months while awaiting our move to the UK. I would please like to know if this product is appropriate for long term use, as the next couple of months will be quite stressful with all the moving, flying and settling into our new home in England.

    Please advise whether this is safe to use on a daily basis for a few months?

  11. Nicolette
    8th Mar 2017 at 11:20 am · Reply

    Serenity, it is a natural product that calms my dogs. My dogs are fearful of thunder and lightning and this calms them down quickly. I also use the Allergy as one of my doggies have sensitive skin and this also works quickly and effectively. I am so glad that I found this product.

  12. Theresa
    13th Feb 2017 at 4:31 pm · Reply

    Serenity has been my lifesaver as we have a dog with huge Separation Anxiety and this product calms her right down and helps her cope. Also brilliant for thunderstorm fear and fireworks season!!!

  13. Mandy
    12th Feb 2017 at 12:25 pm · Reply

    I use this very often in my practice and on dogs and find.It’s assists greatly while we work.through behavioural issues. It’s my favourite product if this type and is easy to feed. It’s also easy to get via shops, internet and makes.for an easy product referral..It’s also safe with no side effects having been.noted.

  14. Angelique
    9th Jan 2017 at 6:27 pm · Reply

    The serenity pet keeps my pet cool and calm, but still alert during festive season

  15. Bianca
    23rd Sep 2015 at 2:25 pm · Reply

    Thank you so much for such speedy service! Loving your products and have a much happier and more relaxed Great Dane thanks to your brilliant Serenity formula!

  16. Ona
    31st May 2015 at 1:26 pm · Reply

    In October of 2012, we adopted Layla, our terrier, from the SPCA. Her neighbour was a brown Cocker Spaniel named Bruno. Due to circumstances, we couldn’t adopt two dogs at the same time, but we prayed that he would still be there a month later. He was. He was now considered an urgent adoption, and most people know what happens when a dog isn’t adopted in time. He seemed to get on well with Layla, and we adopted him. However, this wasn’t without problems.

    The day we brought him home, he attacked all three our cats. Considering that he was a recently neutered three year old dog, we hoped he would calm down as the time went on. He didn’t.

    He had food aggression, a high prey drive, a protection instinct and aggression problems. We didn’t take him back, as we couldn’t give up on him. It was a hard slog to get him to behave in a decent manner.

    Fast forward two years, several ER visits with bite wounds, he seemed to be calming down, but his issues were latent. On bad days, he would still go for the cats or be aggressive, and channeling his energy didn’t help as he doesn’t know how to play or recall.

    My last hope was finding a calming product that we could use permanently, and then I discovered
    Serenity Formula. Within a week we could actually see a difference. He was calmer. Wasn’t barking at everything. Accepting the cats, and generally being a pleasant dog.

    Soon after, we kenneled them for a week, and I was told how amazing he was to have in the kennels. Lovable and he listened. During this week, he still received his Serenity formula.

    We’ve managed to reduce his dose to three times a week now.

  17. Ona
    21st Feb 2015 at 7:57 am · Reply

    Bruno, our Spaniel, for whom we use the Serenity formula, is way more chill. He doesn’t take everything as a threat any more, and is a lot quieter these days. This being a dog that barked almost all the time, and for everything.

  18. Sue Rault
    4th Jan 2014 at 8:14 am · Reply

    Hi Beryl I’ve been using this product on my “attention deficit” hyper Bearded Collie Bandit for nearly a month now. I think he is calmer (although not sure if I can really see this when we go to agility training) how long would it typically be before you see results?

    • beryl
      4th Jan 2014 at 10:04 am · Reply

      Hi Sue. It does depend a lot on the individual dog. But I’d say you should definitely be seeing a difference after a month.

  19. Lucia
    16th Sep 2013 at 3:28 pm · Reply

    The weather has been quite hectic here in Stellenbosch, so my rescued Husky is a little madder than usual – understatement – I am super happy to be able to calm him down again.. Really realised the difference it makes after not having had any Serenity Formula…..both my Swiss Shepherd & my Husky are a pleasure to live with & especially to walk again..

  20. Leah
    7th Sep 2013 at 10:48 am · Reply

    It’s Leah Walsh… I ordered some Serenity Formula from you a few weeks back for a litter of dogs that all began to present w reactivity, aggression and anxiety at 10 months old that I had been working with?
    I just wanted to let you know that 3 out of the 5 litter mates have started to respond favorably to the supplement, one even has a chance of becoming adopted because he has calmed down so much!! It truly has been an amazing transformation, and I’m starting to see slight changes in the other 2 as well!
    Now that I’ve had a chance to use the product I would like to continue these dogs on it of course, plus start using it more on my rehab dogs as well.

  21. Renie
    2nd Jan 2013 at 10:37 pm · Reply

    Is this a safe product to use for my diabetic dog that shows signs of separation anxiety?

    • beryl
      3rd Jan 2013 at 8:09 am · Reply

      Hi Renie. Yes, it is safe. (It might even have benefits for the diabetes as well, as Inositol, a B vitamin has been found to be beneficial…)

  22. Susan
    30th Aug 2012 at 2:47 pm · Reply

    I thought you might like some feedback. Of course, it works, and I feel the benefits every day. I am giving it to both dogs, Fudge (our large Afrikanis) is now super chilled except when she is in the bakkie, but she does not get over the top. She is happy and excited but still grounded and listens. She no longer barks (high pitched excitement bark) all the way to the stables and all the way back. Our Collie cross Pointer is getting it because we have just moved house, and he is also a rescue. He is also lovely and calm and relaxed. Both dogs still take a very active interest in their surrounds, and all the happening around them, but they no longer get so ever excited that they shut down and switch off. It is fantastic stuff.

  23. Susanne
    21st Jul 2012 at 6:27 am · Reply

    Hi Beryl, Thanks for suggesting Serenity for my hyper dog! I will get it today, and try on Artus straight away. He is constantly barking, whining, racing around like a âہ”mad dog”, and I cannot get proper weight on him. He started this behavior when the animals came back from Kenya, and I was in Kabul for a few months. And since then, he has just kept on and on and on!. WIll let you know how things are going!

  24. Keri
    3rd Apr 2012 at 5:43 pm · Reply

    I have had my Australian Cattle dog on Prozac for about 5 months and have not really noticed a difference in his excitability/some times aggressive behavior. I recently began weaning him off of it but would like to try a more natural product. Would you recommend this and if so should I wait until he is fully off the Prozac to begin using it? Thanks

    • beryl
      4th Apr 2012 at 6:44 am · Reply

      Hi Keri
      I do recommend that you try the Serenity Formula. But – this is VERY important – you must stop the Prozac first, completely. It would be dangerous if you didn’t. Good luck.

  25. Vanessa
    2nd Nov 2011 at 8:29 am · Reply

    I made enquiries about Serenity a few months ago. I struggled to find Serenity from the various suppliers listed on your website.

    I was fortunate to find some at Springbok Pharmacy in Alberton. I live in Johannesburg and it was quite a drive for me.

    Well, to cut a long story short. I have some amazing news for you.

    I used it on my very nervous 3 year old German Shepherd bitch. She was abused as a puppy in various ways by my cruel neighbours and is petrified of people

    We did the unthinkable and entered her in a show last weekend. She came third in a very strong bitch class. And even beat some imports.

    With Serenity, she can lead a normal life.

    Thank you so much for a wonderful product.
    Keep up the good work

  26. Pen Jaquet
    10th Oct 2011 at 5:42 pm · Reply

    Will this help for my Boerbul who is just aggressive to other animals and who is highly active, always looking for something to chase, something to go at etc. She is healthy, fit, fat, no problems and has just always been on the look out to do something whether destructive or not.

    • beryl
      10th Oct 2011 at 8:40 pm · Reply

      Pen, the main ingredient, 5-HTP is the immediate precursor to serotonin in the brain. Serotonin is the calm, happy, relaxed hormone. The more 5-HTP in the diet, the more serotonin in the brain (up to a level). It usually helps with aggression, anxiety, nervousness, etc. Worth a try …

  27. dawn
    27th Jul 2009 at 3:17 pm · Reply

    My dog, Toby wont eat this on his food but will in milk and then quietly goes and lays down and is as good as gold! 🙂 After being a hyper nut that is insistant that we play ball with him!

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