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The strongest L-Carnitine & Magnesium supplement available

Stamina Plus is an ideal energy supplement for dogs that need  the ability to function all day long, whether  sporting dogs, working sheepdogs, gun dogs, agility or security dogs


L-Carnitine supplement for increased  fitness and endurance for working and sporting dogs


A dog that takes part in high demand activities or indeed any long period of work calling for stamina and energy may find its natural system for producing the chemical L-Carnitine unable to keep up with demand

L-Carnitine is an amino acid like compound produced naturally in the dog’s liver and kidneys which is then transported through the bloodstream to muscle cells. There it converts fat reserves to sugars whose metabolism then releases energy and stimulates muscle action and growth

A temporary deficit of L-Carnitine can lead to reduced energy and symptoms of fatigue and slow recovery time or the inability to develop stronger muscle power despite exercise and training

What is L-Carnitine?

L-Carnitine is small peptide/amino acid that is essential in all animals for the production of energy. Carnitine is needed by the body for the metabolism of fatty acids into energy in the cells. It helps the body utilize fat for conversion into energy while maintaining the lean muscle mass, which helps reduce the overall body fat. It may also help decrease the levels of cholesterol and lipids (fats) in the blood.

Because L-Carnitine is essential in the process of converting fatty acids into energy a deficiency may result in increased fat storage, decreased performance, and, potentially, an increased risk of heart disease. A temporary deficit of L-Carnitine can lead to reduced energy and symptoms of fatigue and slow recovery time or the inability to develop stronger muscle power despite exercise and training.

The natural source of L-Carnitine is fresh meat and milk, however manufactured pet foods frequently contain less than 5% of the L-Carnitine of fresh meat. With the vast majority of pets being fed on manufactured diets, supplies of L-Carnitine in the diet are often insufficient. 

Synthesis in the body occurs mostly in the liver. However skeletal and heart muscles, which use 95-98% of the supplies, cannot synthesise their own L-Carnitine and this explains why deficiency most commonly occurs in these tissues. 

The dog in particular is a species predisposed to a deficiency of L-Carnitine. This is because there is a high level of L-carnitine excretion via the urine and very little re-absorption through the renal tubules.


Feeding & Ingredients

This liquid is given orally, preferably twice daily, to increase stamina and performance. It can be easily added to feed or introduced directly into the dog’s mouth.

It can be fed long-term as part of the dog’s maintenance regime or given for specific times when an extra challenging day is expected. In the latter case, be advised that the L-Carnitine present in Stamina Plus takes approximately 3 hours to reach its maximum benefit and stays at that level for a further 3 hours before gradually diminishing in its effect.

As with the other products, daily usage is calculated according to the dog’s bodyweight and the daily feeding level is 2 ml per 10kg (22lbs) of bodyweight.

Stamina Plus contains 400mg/ml of L-Carnitine and 100mg of Magnesium Aspartate Hydrochloride

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Verified Reviews

Chris Wakeham 14/1/21

Great company very helpful and knowledgeable. After a long chat on the phone I placed an order just before Christmas and it arrived next day. My 2 labradors love the Flex sprinkle and are showing signs of the benefits by moving more freely. Just placed my second order.

Su Brown 1/1/21

You can't beat the best.
My little papillon has been on the Flex Jointcare for a number of years due to various life-long joint and ligament problems. Just recently it was really to prove its worth to me all over again! Buddy has been pretty poorly over a number of months and despite a CT scan nothing conclusive could be found. He was on pretty heavy drugs which I have now weaned him off and onto a natural oil. He was doing really well but then out of the blue started to show signs of distress! Realised that due to him not wanting to eat when he was poorly he had missed out on his Flex Sprinkle for nearly a month! Immediately started him back on a half dose to restart the routine he has been on for a number of years, and to which I have no doubts I owe the fact he is now approaching his 11th birthday and is still with me. Literally within 3 days my little Buddy started to perk up again, and now a week down the line and now back on his full dose of Flex Sprinkle, I have my adored bouncing Buddy back to his old self. I honestly cannot thank Ace-Canine enough for producing this miracle in a tub. I have recommended to so many friends, I have lost count.

John 19/11/20

Flex Sprinkle
I've used Ace-Canine's Flex Sprinkle for my Goldie for years; ensuring she stays as supple and mobile as possible.
From ordering to delivery, within 24 hrs!!! Excellent service.

Nathalie S 19/11/20

Instant relief for our dog
Our 11 years old Keeshond started having joint issues and has an early stage of cataract. I contacted Ace Canine through their social media, asked for more information on which medication was best for our dog. Not only were they very helpful, I also got a discount code.
Our dog is relieving through her medication although if it's not given on time, she can relapse with fatigue and limping.
I've been giving her Clarifye for her cataract 4 times a day for a month, I think it helps but can't really tell for sure, also no changes on her eyes discolouration.
She's also taking Trimega as a multivitamin, Flex Celadrin and Flex Sprinkle Joincare. Now this combo has made a huge change on her overall health. She's back to being playful, even runs, seems more happy and has good appetite.
I used to give her as well Plaque Away, that definitely worked especially with foul breath but I stopped it as I didn't want to overload her with supplements.
All in all, would highly recommend Ace Canine products, it sure works on our dog.

Rachel 15/11/20

Flex Sprinkle Jointcare
Love the stuff ! The dogs do really well on it rate it. The company staff really helpfully and delivered without delay. One of the best company’s I have dealt with

Kevin Preston 4/11/20

Flex Celadrin
I bought the Flex Celadrin capsules as one of my older dogs was suffering with his back legs. Have to say it seems to have made a great difference in his walking now. Much better to use this then the injection he was getting every 6 months. I will definitely continue to use these capsules. Thank you.

Janice Dexter 13/11/20

Clarifye Eye Drops

Katy Fenton 11/11/20

Flex Sprinkle Jointcare
Wouldn't be without it. Tried cheaper but it's just NOT the same. 100% Recommended !!

Nicola 27/10/20

Flex Sprinkle Jointcare
Literally a miracle in a pot, our 16 year old staffy has a spring in his step and is moving about a lot more easier. Fantastic results, the loading dose has literally given him a new lease of life within 48 hours. We will be putting our 8 year old on it next. Amazing product that I wish we had known about sooner.

Karen Winter 14/11/2020

Clarifye Eye Drops
Excellent product - Clarifye. Has made an amazing improvement in my jack russells cataracts already even when she is 16 years old. It has given her a quality of life back and she is much happier in herself and enjoying her walks again. She can now see much longer distances and manages well in the dark.Product arrived promptly and well packaged. Thank you Ace Canine!!