Frank and Jellys

Muscle+ Advanced Mass Gainer

Formulated with 100% natural organic ingredients

ProDog Muscle+ is a powerful, all-natural, organic formula developed to help dogs achieve (maximum) muscle growth and development. Formulated from both feeding trials and analysis, it delivers high-grade protein, including the 10 specific amino acids dogs required to optimise mass gain, power, speed, strength, and enhanced definition.

We are so confident in the results Muscle+ will deliver…We even offer a full 30-day no-quibble money-back guarantee!

Each tub contains 100 Servings (500g)

  • Lean muscle builder
  •  Maximises muscle growth
  •  Enhances definition
  • Optimise strength, speed and stamina
  • 76% power packing protein per serving
  • No milk-based proteins whatsoever
  • Rich in amino acids – the building blocks of growth
  • Contains essential fatty acids and antioxidants
  • Human grade ingredients
  • No impact on mood and no side effects
  • All-natural ingredients – nothing synthetic
  • Suitable for puppies from 24 weeks


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About Muscle+

Muscle+ Advanced Mass Gainer is an advanced and effective support supplement designed for advanced weight gain and muscle development in dogs. Muscle+ will also assist underweight or malnourished dogs to reach a desirable weight safely. The all natural ingredients help build the best version of your dog.

How does Muscle+ help?

Formulated by feeding trials, and not just by an analysis, Muscle+ is the go-to product for enhancing muscle mass, power, strength, and endurance. It delivers world-leading levels of specific high-grade organic protein, which when combined with the other ingredients, target every aspect of a dog’s muscle growth, development, and definition.

Power Packing Proteins

Muscle+ is loaded with all the essential components needed to attain optimal physical potential and weight gain for dogs. A world leader in delivering protein, Muscle + guarantees a huge 76% premium grade protein in each serving. Importantly, this is dairy free, organic isolate hydrolysed soya protein that is kind to dog digestion and safe for the canine anatomy. Protein is critical in the repair of muscle tissue that is broken down during exercise.

Amazing Amino Acids

Muscle+ is rich in amino acids, the vital building blocks for growth. Dogs require 10 specific amino acids not produced naturally. Muscle+ delivers all of these. Increased power and strength are fully supported. Lean healthy muscle gain, resulting in long-lasting definition will be achieved. Rolled oat flour is also added to maintain cholesterol levels and boost fibre absorption for healthy digestion. This also acts as a nerve tonic, maintaining a calm steady mood before and after exercise.

Essential Fatty Acids and Antioxidant

TRich in Omega 3 and 6, Muscle + helps to maximise coat and skin condition. These will also help your dog work to his full learning potential. In addition, eye health is supported. Large dogs are prone to antioxidant deficiency, Muscle+ helps protect against this. Also, these key ingredients can help maintain a regular heartbeat and bolster a healthy immune system.

Who is Muscle+ for?

Muscle+ is for any dog where muscle bulking or safe weight gain is required. If optimising strength, speed and stamina are the priority then this product is for you

No Nasty Ingredients

Muscle+ is built purely from harnessing the power of nature. There are strictly no steroids or other synthetic enhancers used so your dog will have no side effects or suffer from mood changes. Only the very best human-grade ingredients are used.

Useful Info

Each 5gm scoop (1 serving) contains:

Pantothenic Acid (2mg) Vitamin B6 (2mg) Choline (10mg) Vitamin A (0.3mg) Vitamin B1 (Thiamine) (3mg)
BioRn (0.05mg) Vitamin E (3mg) Folic Acid (50ug) Vitamin B12 (4ug) Vitamin B3 (Niacin) (6mg) Vitamin C (20mg)
Vitamin B2 (Riboflavin) (1.2mg) Magnesium (20mg) Iron (2.5mg) Selenium (20ug) Manganese (0.14mg)
Zinc (3mg) Vitamin D3 (5ug)

Directions for use

Up to 15kg:  1 serving per day

Over 15kg:   2 servings per day

30 Day Money Back Guarantee

We offer a 30-day money-back guarantee. So with ProDog nutritional supplements, you have absolutely nothing to lose.

Using ProDog nutritional supplements, the results will speak for themselves within a very short space of time. We are so confident about this if you’re not satisfied we’ll give you a full refund on your purchase with absolutely no quibble. Click here for the terms and conditions.

Customer Reviews
4.7 Based on 7 Reviews
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Filter Reviews:
Lauren T.
I recommend this product

Much better than I expected

This item has seriously helped my 9yr husky boy with hip dysplasia. I was skeptical at first about a muscle gaining product but after seeing the difference in my boys happiness and movement I'll be sticking with it.

Toni R.
I recommend this product

Muscle+ Advanced Mass Gainer

Daisy has lost some muscle mass due to having to reduce her running around like a loon which was triggering her epileptic seizures. I’m currently testing this product to see if it helps re build some muscle. Early days, but there are no problems with palatability. It goes in her breakfast and is hoovered down with no issue. Too early to say whether it’s helping with muscle mass.

All orders placed before 12:00 Monday – Friday (exc Bank Holidays) will aim to be dispatched the same day.

During busy periods such as sale periods the dispatch time may be slightly delayed.

For UK Mainland Orders 0-2kg we use Royal Mail as our delivery partner.

Delivery Options Available

Standard 2-4 Working Days (Non-Tracked): £5.60

Royal Mail Tracked Service (exp 2-3 days after dispatch): £6.60

RM24 – Royal Mail 24 Hour Tracked: £10.50

Orders over £75 will receive RM 48 hour free-shipping.

All international orders are priced on weight and will be quoted at the checkout. For more information about taxes, duty and other applicable customs information, please read our terms and conditions prior to purchase.

Royal Mail delivery time scales are guidelines and reasonable endeavours. During peak periods these may experience delays however Royal Mail will not refund shipping costs due to delayed deliveries.

Please note that Nikki’s Nesties products are handmade to order and can take up to 14 days to arrive from point of order and will be sent separately from all other items as part of the same order.

Orders which include items labelled on their description as “temporarily out of stock” or on backorder will be dispatched once all items are back in stock.

Any questions on out of stock items please email customerservices@frankandjellys.com

Please note: Strict EU guidelines, governed in the UK by the Veterinary Medicines Directorate, restrict the use of words and information that may portray a product as a registered medicine. In order to comply with these regulations, a number of our customer reviews have had certain words removed.