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"Phaze is 7 year old Border Collie that competes in the sport of Dog Agility I know her pretty well, and the effects which I have observed since adding Nupafeed Stamina-Extra to her diet. Recovery times from competition and training even her normal walks has vastly improved! Muscle mechanics surely has improved as bar knocking is far less and muscle growth improved by gaining nearly a kilo without excess body weight! Stiffness and fatigue to muscles after a run seems to be considerably less from before, as she's a lot more mobile say 30 minutes post run. And most importantly her concentration and decision making on course in competition has been exceptional having greater success this year. Very happy with the results thus far!"  Marc Saunders

Marc Suanders, Phaze SE

Nupafeed Stamina-Extra

Unique L-Carnitine liquid dog supplement with MAH. For stamina, strength and recovery in working dogs.

Stamina-Extra is a patented, pharmaceutical grade, liquid L-Carnitine supplement for dogs.  Use to support healthy muscle and cardiac function, energy metabolism and athleticism in dogs.


Stamina-Extra uniquely combines L-carnitine with MAH magnesium. MAH serves to facilitate absorption and works synergistically with L-carnitine to support muscle performance and healthy energy metabolism.


L-carnitine is a natural compound which is synthesised in the liver and also supplied through protein rich foods, particularly red meat. It is required for energy metabolism, enables the transport of fatty acids and acts as a buffer inside the cell helping to maintain a favourable environment for energy production.


Hard working dogs or those receiving poor levels of dietary L-carnitine are likely to benefit from supplementation.  

For hard working dogs...

For overweight dogs...

Natural supplement for athletic dogs.


Supports a healthy heart.


Improves fitness and energy metabolism in overweight dogs.


In liquid form, easy and flexible to feed.


Can be fed with other supplements or medication.


Uses pharmaceutical grade L-Carnitine, the free, active form of carnitine.


Totaly legal for competition.

Feeding advice:


The basic feeding rate is 1ml per 10kg bodyweight per day, giving half of the total amount in the morning and half in the evening. You can adjust this as required, increasing intake before more strenuous exercise for example.


Stamina-extra can also be used on a short term basis. Start three days before competition and build to a double amount given the night before and one the morning of competition of more strenuous work.

Stamina-Extra L-Carnitine Supplement for Dogs product image

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Stamina-Extra supports optimum energy production to aid stamina and recovery. It also supports muscular adaptations to exercise to aid fittening and strength. For this purpose it is best fed every day, ideally starting three weeks before a period of strenuous work. Stamina-Extra can also be fed for short periods of extra work.

Dog on Scales Frequently Asked Questions Customer Reviews

Stamina-Extra supports healthy energy metabolism and exercise tolerance. Both magnesium and L-carnitine have been shown to support a healthy insulin response. L-carnitine may also help to promote the use of fat as an energy source, thereby improving energy levels and encouraging weight loss.