SF-50 (replaces SA37)

SF-50 (replaces SA37)
500g Bag

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  • 500g Bag £8.60
  • 1.5kg Bag £26.97

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£8.60 to £26.97


SF-50 is a multivitamin and mineral supplement, boosted with added Calcium, that is designed to maintain top condition in dogs, cats, birds and most other small species. Boasting a superb broad spectrum of top quality nutrients including minerals, trace elements and vitamins, SF-50 is ideal for ensuring a healthy, active and enjoyable life with your pets. Containing high levels of Calcium, Vitamins A, B, D & E in addition to Iron and Copper, SF-50 Stress Formula supplements your pet's diet to provide all round excellent nutrition. Ideal for sporting dogs and greyhounds, SF-50 is particularly effective for animals required for competition due to its stress-busting formula.

Daily Feeding Guide
Dogs, cats and other animals reptiles or birds kept as domestic pets should benefit from regular daily use of SF-50. It helps ensure a correctly balanced supply of essential nutrients for good condition and healthy coats and skin. Use in growing puppies, pregnant or lactating bitches and during periods of stress or recovery.

Adult Dogs give ¼ to ½ teaspoonful (1-2g) per 10kg (22lb)
Puppies, Cats and Kittens give ¼ to 1 teaspoonful (1-4g) daily according to size.

Approx dietary analysis per kg
Vit A 360,000 iu
Vit D 3,3600 iu
Vit.E 2,700 iu
Vit. K3 45mg
Vit.B1 45mg
Vit. B2 108mg
Vit. B6 54mg
Vit.B12 360mcg
Nicotinamide 720mcg
Calc.Pantothenate 216mcg
Biotin 3.6mg
Folic Acid 90mg
Copper 360mg
Iron 540mg
Manganese 1440mg
Cobalt 18mg
Iodine 18mg
Zinc 1440mg
Selenium 3.6mg
Choline Chloride 1800mg
Monocalcium Phosphate 78.6mg
Magnesium 720mg
Sodium (as chloride) 191 mg
Dried Brewers Yeast 100g
Natural Limestone Flour to 1kg

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All prices include VAT where applicable.

Reviews (19)

Summary of Reviews for SF-50 (replaces SA37)

Overall 5
Ease Of Use
Value For Money
Absence Of Side Effects
19 out of 19 (100%) customers would recommend this product.
5 stars (15 reviews)
4 stars (3 reviews)
3 stars (0 reviews)
2 stars (0 reviews)
1 stars (1 reviews)

Only verified purchasers of this product can leave a review.

55 Delivered quickly
Verified Purchase

By on 11 November 2021

Arrived very quickly very pleased so far

Customer recommends this product

55 Very pleased
Verified Purchase

By on 11 June 2021

First recommended to me by dog trainer Barbara Woodhouse over 30 years ago and have used it ever since. Helps keep dogs in great condition.

Customer recommends this product

55 Sf50
Verified Purchase

By on 27 October 2020

I started using this for my dog he loves the taste he’s looking g good

Customer recommends this product

55 SF50
Verified Purchase

By on 29 April 2019

I'm retired from the petbtrade since 2006 after 30 years. I sold SA37 for most of that time and when it disappeared and became SF50 I read the analysis and found it to be very similar. We now have 3 medium breed dogs (Border Collies) and SF50 keeps them in tip top condition along with their fresh meat diets. I already do recommend SF50 to friends as i believe the mineral supplements contained in the mix are vital to condition.

Customer recommends this product

1 person found this review helpful

55 Excellent supplement
Verified Purchase

By on 31 March 2019

Easy to use, dogs like the taste & it does the job. I was always a fan of SA37 & this replacement seems just as good

Customer recommends this product

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Q & A

Below are some recent questions we've received regarding SF-50 (replaces SA37), including answers from our team.

22 July 2021 at 7:51pm

Can this be used in home cooked dog food?

Vivienne Gould

  • VioVet customer since 2013
  • From: Suffolk, United Kingdom

Although my 3 year old miniature poodle has cold pressed complete food, she now won't eat it unless mixed with tinned food or home cooked meat or meat/veg. She has a delicate stomach and is fussy so I try to vary her food eg scrambled egg or tinned sardine in oil or boiled white fish for breakfast and minced beef/or turkey that is browned and cook with water or with carrot, celery, swede, sweet potato but avoid tinned wet food she it can upset her tummy. The cold pressed is mixed with her dinner and I leave some in a bowl most of the day.
I am not sure if she is getting the correct mix of vitamins and minerals so wonder if SF-50 would be a good thing to add to her diet? I would prefer that she just as the cold pressed but needs must.

  • VioVet Staff

Yes this supplement can be used to ensure any home made diets meet the vitamin/mineral requirements of your dog. Wherever possible it is recommended to feed a complete branded diet if you can. Certain proteins are 'essential proteins' and can only be obtained through the food, they cannot be supplemented. Complete diets ensure these proteins are present.

24 November 2020 at 6:27pm

Safe during pregnamcy


Hi. My dog is pregnant. Is this safe for her, before and after birth?

  • VioVet Staff

Yes this product is safe for use and is actually advised specifically for use in growing puppies and pregnant or lactating bitches. It will help provide additional nutritional support for times where reserves are stretched, such as during pregnancy/lactation.

16 October 2020 at 6:32pm

Dog with slight anemia

Ann Andrews

  • VioVet customer since 2008
  • From: , United Kingdom

Would this supplement help my dog who has slight anemia? My vet says it is nothing to worry about but a supplement should help to get his levels up.

  • VioVet Staff

This multi-vitamin/mineral supplement will benefit the body in general but not necessarily support blood cell production in particular. It is most important to resolve the underlying cause for the anaemia, I recommend following your vet's advice on treating any underlying issues as a priority.
You can try iron supplements, iron is found within red blood cells so supplementing with it can help with supporting normal blood cell production. SF-50 does contain iron so can help, but Canine Red Cell is also an iron support supplement that can work well.

27 October 2016 at 11:03pm

Will it stop my dog who is albino white scratching himself


Will it stop my dog who is albino white scratching himself ive tried itchy dog full of omega 3 it hasn't worked

  • VioVet Staff

If the itchy dog supplement hasn't worked then I doubt that this one will either. There are a few different causes of itchy skin in dogs. The most common is fleas so make sure your dog is up to date with flea treatments including treatment of the house. Otherwise an allergy to certain foods or something in your dogs environment is possible. It would be useful to have your vet examine your dog to help determine an underlying cause for the itchiness. Once you have determined the cause something like Yumega Itchy dog or SF-50 would be a good choice to help maintain healthy skin.

10 May 2016 at 7:49am

Suitable for SBS?

Hayley Moore

  • VioVet customer since 2016
  • From: Bedfordshire, United Kingdom

Hi - in a bid to help my dog recover GI resection and now suffers Short Bowel Syndrome, would this supplement be suitable to give him and would it be beneficial? He had 5ft of small intestine removed. Thanks

  • VioVet Staff

Increasing the vitamin content of the food might well help ensure he absorbs enough, so it does make sense to try. As long as you give the recommended amount it will not cause any trouble. Easily digested foods etc would be advised anyway. I have no experience of hydrolysed diets in this situation, but I wonder if they might help (eg Purina HA, Hills z/d).

31 January 2016 at 3:11pm


Diane Moore

  • VioVet customer since 2015
  • From: Suffolk, United Kingdom

My dog has recently been diagnosed with EPA, and I have read that vitamins B12, A,D,E and K should be added to her diet. Can you yell me if SF-50 is suitable. She also has 3 Lypex tablets added to three meals each day. Any further advice you could give me would be most welcomed. Yours truly. Diane Moore

  • VioVet Staff

SF-50 is a comprehensive supplement which contains all the vitamins needed in suitable proportions. If you are using a commercial dog food, that will already have vitamins added to it in fact, so I am not sure you would get much benefit. Having EPI could mean that your dog is potentially going to be short of the fat soluble vitamins but if the Lypex is doing its job this is not an issue. Adding large amounts of vitamins A and D can be toxic so you should not do that, though it would be safe to use SF-50 at the recommended rate in your dog. However it would be more usual to just supplement B12 and perhaps Vitamin E. B12 is normally given by injections once per week initially, then every few weeks. It is safe to give a lot of B12 if you want, that is not at all toxic. Vitmain E can be given at normal inclusion rates, but not many people do this and we do not sell this by itself and is normally part of a multivitamin supplement.

One other thing you could consider would be a pre- and pro-biotic such as Pro-kolin Enterogenic. It helps to keep the bacterial population of the gut in good shape, which again helps the whole digestive performance to be more as it should be. It can be given along with the Lypex and vitamins if you choose to do it. All of them are intended for long-term use if required.

9 June 2015 at 11:27pm

19 week old pup obsessed with eating grass and stones

Elaine H

Our 19 week old labrador pup seems to be obsessed with picking up and eating stones as well as grass and has swallowed them and passed them. He has also been sick and brought them up. We do watch him but he is so quick. We do everything in our power to ensure he doesn't eat them but now wondering if there is something lacking in his diet. He is on a good food which is higher in protein

  • VioVet Staff

This is not unusual for a young labrador and they do get themselves into trouble sometimes by swallowing stones. It is normally regarded as simple greed for which the breed is notorious. This might not be an adequate explanation, but it is the best we have. I suspect that if there is a "defficiency" as you are questioning, it is certainly nothing to do with the "micronutrients" provided by SF-50. I do regard SF-50 as a great product and of immense use for animals on unbalanced, home prepared diets. It is no help for a dog on a good quality commercial diet which has all of this stuff added anyway, and if anything a carefully formulated balance is upset by adding extra things. If a deficiency is involved it is much more likely to be in the chewy, bulky parts of a natural diet which we do not provide. In a natural state there would be lots of bits of hoof, hide, bones, gristle and sinew etc lying around for young canines to spend time playing with and eating bits of. Probably brilliant for them nutritionally as well as behaviourally and for digestive and dental health. We cater for the nutritional needs even better now, but not all the other factors. I think you would do better to offer chewy treats and large hide chews which are so big the puppy cannot eat one in a single sitting. He should be able to go back to them as and when he wants. I must say a carpet littered with part-chewed animal parts is extremely unappealing to us, but would be perfect for a puppy. See what you can do along the lines of chews and treats would be my suggestion.

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