The Herbal Pet Calm & Anxiety SKU THP-SF

Herbal Pet Serenity Formula

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

5.0
Rating
3
Reviews

Herbal Pet Serenity Formula

SKU THP-SF

Price & shipping for

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Price range: R82.57 through R640.55 VAT included (if applicable)

Ordering & delivery

Getting it to you.

  • Moneyback promise, since 2013. Full refund, no returns, no questions.
  • Shipped from Johannesburg, South Africa. Resold in some countries by Natural Friends: contact them directly. International orders take 1 to 2 weeks; shipping and any import duties due will show at checkout. See where we ship →

01 · THE PROBLEM

The problem this solves

A lot of behavioural problems - dogs fighting, shy nervous cats, separation anxiety to name just 3 - can be solved using safe, gentle nutritional ingredients.

02 · WHO IT'S FOR

Who Serenity Formula is for

01

nervous or anxious pets

02

sound sensitive pets (eg thunderstorms, fireworks)

03

pets moving house, travelling or changing owners

04

rescue pets

03 · THE FORMULATION

Every ingredient, and why it's in

Brewer’s Yeast (base ingredient) Saccharomyces cerevisiae

Brewer’s yeast (Saccharomyces cerevisiae) is a yeast and is the source of various vitamins and minerals.

L-Tryptophan

More tryptophan helps the brain make more serotonin (the happiness neurotransmitter), which supports emotional balance.

Inositol

Helps reduce mild everyday anxiety, restlessness, and agitation from environmental triggers like loud noises.

Chamomile Matricaria chamomilla

It helps relax muscles so your pet can rest. Also useful for situations where the nervousness in the pet is expressed as stomach upsets.

Passion Flower Passiflora incarnata

Passion Flower increases gamma-aminobutyric acid (GABA) levels in the brain, which reduces nervous system overstimulation and eases anxiety.

Magnesium

Magnesium lowers stress hormone levels to help pets bounce back from fear or anxiety.

Formulated by Beryl Shuttleworth, BSc Hons Biochemistry

04 · DOSING

How to feed it, by weight

Pet sizeDaily dose
Small pets 1 to 10kg 1/2 tsp per day
Medium pets 10.1 to 20kg 1 level tsp per day
Large pets 20.1 to 40kg 1 heaped tsp (5g) per day
Giant breeds > 40kg 2 heaped tsp per day

How. Mix into your pet’s food or with a yummy treat Small pets [ 40kg ]: 2 heaped tsps (10g)

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

Safety

  • Not for use during pregnancy or lactation.
  • Not to be used in conjunction with anti-depressant medication.
  • Store carefully as harmful to dogs in very 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.

05 · QUESTIONS

What owners actually ask

Will this help with separation anxiety in dogs?

Yes, we have had quite a bit of success with this. You might need to give a double dose (safe) in the beginning though, just to get the stress level down, then after a few days reduce to a single dose.

06 · Customer reviews

What owners report

Named owners, named pets, dated outcomes. Our own reviews are shown in full. Where the same products are sold by other shops, we summarise what their reviewers say, the good and the bad, with a link back to read the originals there.

5.0 3 reviews on this site
  • 5 2
  • 4 0
  • 3 0
  • 2 0
  • 1 0

3 reviews for Herbal Pet Serenity Formula

  1. Renske Verwey (verified owner)

    Like many dogs, our Coco is terrified of thunderstorms.
    We can give Serenity to him, even when the storm is already going and he is shivering, and it still calms him to the point of relaxation, not drugged, state. Within 10 minutes! He sleeps happily on his bed when he’s had his dosage. It makes for a much more peaceful home and friend. Thank you!

    • Beryl Shuttleworth

      Wow, thanks for that Renske! So pleased!!!!

  2. louisa lightfoot

    i have seen the difference over two weeks. My dog was constantly picking on the other dogs and dominating them. Now all the dogs are calm, sleeping on the verandah and no problems at all.

    • Beryl Shuttleworth

      Yay, Louisa! 🙂 (You made my day…)

  3. Nicolette

    When I first used the product I was very skeptical. However, within 15 minutes my pet was calm and relaxed but not drowsy. Its easy to use and easy to administrate to your pet.

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Faithful to Nature As of 2026-06-20 · 4.3/5 from 15 Faithful to Nature reviews

What they like

  • Noticeable calming effect: The majority of reviewers report a clear reduction in anxiety and over-excitement in their pets, including dogs and cats. (≈11 of 15)
  • Works across a range of triggers: Reviewers mention successful use for separation anxiety, thunderstorms, fireworks, vet visits, and general everyday anxiety. (≈8 of 15)
  • Suitable for rescue animals: Several owners of rescue pets found it particularly helpful in settling animals with a history of stress or trauma. (≈3 of 15)
  • No notable side effects: Most reviewers report that pets remained calm without becoming drowsy or showing adverse reactions. (≈4 of 15)

What they flag

  • Effect is subtle or gradual: A handful of reviewers note that improvement is slow to appear and mild in degree, meaning it may not be sufficient for severe or acute anxiety episodes. (≈3 of 15)
  • Does not work for all pets: At least one reviewer reported no calming effect whatsoever, even in a normally calmer dog, finding the product completely ineffective when tested under stressful conditions. (≈1 of 15)
  • Mild digestive sensitivity in some pets: One reviewer noted their pet experienced mild nausea after taking the product. (≈1 of 15)
Read all reviews on Faithful to Nature
Pet Heaven As of 2026-06-20 · 4.4/5 from 11 Pet Heaven reviews

What they like

  • Effective at reducing aggression and anxiety: Multiple reviewers report a clear reduction in inter-pet aggression and anxiety-related behaviours such as barking, whining, and hyperventilating. (≈7 of 11)
  • Pets accept it readily in food: Several owners note their pets took to the supplement without fuss, with one reviewer mentioning it forms an appealing gravy over kibble. (≈4 of 11)
  • Longer-lasting calming effect compared to alternatives: A couple of reviewers who had tried other products felt this one provided a more sustained calming effect over time, even if onset is slower. (≈2 of 11)
  • Good value for money: At least one reviewer notes the product is affordable relative to the quantity needed per month.

What they flag

  • Slow to take effect — results require consistent long-term use: More than one reviewer notes the product does not work quickly and needs to be given over an extended period before a difference is noticeable. (≈3 of 11)
  • Palatability issues with fussy eaters: At least one reviewer found that a picky pet would not eat the powder when mixed into food, and preferred a tablet format instead.
Read all reviews on Pet Heaven
Takealot As of 2026-06-20 · 4.0/5 from 10 Takealot reviews

What they like

  • Calming effect: Most owners noticed a genuine reduction in anxiety and reactivity, including in severely traumatised or high-strung dogs. (≈6 of 10)
  • Works alongside or better than prescription medication: Some owners found it at least as effective as vet-prescribed calming treatments, making it a preferred long-term option. (≈2 of 10)
  • Easy to administer with food: The product mixes readily into meals and most dogs do not object to the taste. (≈3 of 10)
  • Flexible dosing: Owners found they could adjust the dose up or down to suit everyday needs versus high-stress events such as thunderstorms.

What they flag

  • Results vary between individual dogs: Several owners noted the product worked well for one dog but had little to no effect on another, suggesting inconsistent results across animals. (≈3 of 10)
  • Slow onset requires patience: The calming effect builds gradually over weeks, which led at least one owner to initially abandon the product thinking it was not working. (≈2 of 10)
  • Poor value for larger breeds: At the recommended dose, the supply runs out in under a month for a large dog, making ongoing use costly. (≈1 of 10)
  • Adverse reaction reported: One dog vomited after taking the product, making it unusable for that owner. (≈1 of 10)
Read all reviews on Takealot

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Price range: R82.57 through R640.55 VAT included (if applicable) Get it