I agree with Corky/Max. Being that the dog is only 3 years old I would be looking for alternative meds for you dog in order to enjoy what should be another 10 quality years of life. Do your research and look into alternative therapy which could help tremendously. In the meantime I would keep your pup away from other animals to eliminate attacks caused by pain until the situation is under control, which is the number one priority now.
Here are a few great links...
AddisonDogs
Addison's Disease In Dogs - Guide On Canine Addison's Disease - Dog Addisons Disease Information
Here is some info I have compiled from the net...
"It is the common name for hypoadrenocorticism, or adrenal insufficiency. It is a disease with symptoms that are common in many other ailments, making diagnosis difficult and sometimes a process of elimination. But once Addison's is correctly diagnosed, a properly treated dog can live a normal active life.
The adrenal, one on each kidney, is made up of two layers, the cortex and the medulla. The outer area, or cortex, secretes corticosteriod hormones such as cortisol and aldosterone. The medulla, part of the sympathetic nervous system, secretes epinephrine (adrenaline), which is generally not affected by Addison's.
There are three forms of Addison's disease: primary, secondary and atypical. Primary and atypical Addison's are usually the result of immune mediated damage to the glands. Secondary hypoadrenocorticism is from failure of the pituitary to stimulate the adrenals with adrenocorticotropic hormone (ACTH). It is important for you to know which type of Addison's disease your dog is being treated for."
Again as a reinforcement there r 3 types...
"Primary – When the adrenal glands fail to produce both mineralcorteriods and glucococosteriods. Requires the replacement therapy of mineralocortioids.
Atypical – When there is immune system related damage to the adrenal glands. Without treatment can become primary Addisons. Requires replacement therapy of glucocorticoids.
Secondary – When the pituitary gland does not secrete ACTH, a hormone necessary to stimulate the adrenal glands. Requires replacement therapy of glucocorticoids."
What type does your dog have? If unsure ask the vet.
Here are some natural/herbal substances you can try...
"Licorice – This herb interacts and prolongs the effectiveness of corticosterods, the very substance Addison's disease dog need. It has an ACTH-like action on the adrenal cortex, increasing the production of glucose and mineralocorticoids
Milk Thistle – Supports the immune system as an antioxidant.
Slippery Elm – Used as a natural treatment for diarrhea
Ginger – Thought to strengthen steroid production
Garlic – Helps strengthen the heart and reduces blood pressure
Valerian – Beneficial effect on the heart and blood pressure
Taraxacum officinale (Dandelion) - helps the liver, kidneys and adrenal glands. Promotes adrenal function.
Arctium laps (Burdock) - detoxifies tissues
Astragalus membranaceous (Huang Qi) - helps to restore balance to the adrenal glands.
Arsenicum (30C) - helps with normal urination and thirst levels."
"While natural remedies cannot regenerate the adrenal glands, proper use of natural supplements and herbs can dramatically slow down the progression of Addisons disease in dogs. The key is to provide suitable nutrients to maintain a healthy body and a strong immune system.
Herbs
Nutritious herbs (especially those rich in beneficial minerals and vitamins for the proper functioning of the adrenals) such as dandelion, parsley, spirulina (blue-green algae) and nettle can be fed to a dog with symptoms of Addison's disease.
Immune-boosting herbs such as garlic, echinacea, and astragalus are also essential to strengthen the dog's immunity.
Natural Supplements
Dogs with Addison's disease can also benefit from essential fatty acids as well as antioxidants such as vitamins C, E and A."
Types of herb
Many herbs have been shown to be beneficial for adrenal function, including adrenal support herbs like licorice and borage, Green tea, and ginseng, which can help to reduce stress—an important part of treatment for Addison’s disease.
Borage oil, primrose oi, and black currant oil
These oils are all natural sources of Gammalinolenic acid, which promotes healthy skin and, according to RM Clemmons, DVM, Ph.D, Associate Professor of Neurology & Neurosurgery in the Department of Small Animal Clinical Sciences at the University of Florida, who states that the oils may also be good for autoimmune disorders. Dr. Clemmons recommends adding 500mg of oil once a day for small/medium breeds and twice a day for larger breeds, noting that it could take six to eight weeks to notice a difference.
Ginkgo leaves
Ginkgo leaf extracts increase blood flow to the brain. The cause of secondary Addison’s disease is a malfunctioning pituitary gland. Ginkgo is not toxic to dogs. Dr. Clemmons recommends one capsule two times a day.
American Ginseng According to Shannon Wikinson, writing in Whole Dog Journal, ginseng is “an adaptogenic herb that helps the body adapt to environmental and emotional stressors.” Ginseng works on the pituitary and adrenal glands, increasing resistance to stress. Dr. Clemmons recommends that male dogs over the age of 6-years-old be given American ginseng (not Oriental), in the amount of one capsule daily, and females over six years old should receive one or two capsules of Dong quai, a plant in the carrot family that has been called the “female ginseng”, instead of American Ginseng. Neither of these supplements is recommended for use in young dogs under the age of 6-years-old (male) or 5-years-old (female).
Flower essences
Dr. Ivin, a Chinese medicine practitioner (as quoted by Wilkinson), uses flower essences to reduce stress and limit the need for additional glucocorticoids.
Green Tea
Addison’s dogs often have low energy levels. One cup of green tea a day (or one single capsule) should be added to food, according to Dr. Clemmons. As well as increasing energy, Dr. Clemmons calls it a “good general tonic.”
Licorice
A team of researchers in New Zealand studied the effects of a licorice (liquorice) supplement in one dog taking oral fludrocortisone acetate (Florinef). Despite receiving Florinef, the 4-year-old neutered male suffered from persistent hyperkalemia (high amounts of potassium in the bloodstream). After receiving licorice from the root of Glycyrrhiza glabra, which contains glycyrrhizinic acid and glycyrrhetinic acid, both of which increase mineralocorticoid activity, the dog’s potassium levels returned to normal. More research is underway: if you live in New Zealand, contact Richard Squires or Liz Norman at Massey University for details of the trial."
As Corky/Max suggested do not use the pain meds she mantioned. There are many other methods out there regarding pain management. Here are some compiled from the net...
You can try accupuncture or accupressure.
Magnetic therapy.
"There are quite a few effective herbal pain remedies. Below is a list of herbs that can be used to relieve dog pain.
Feverfew
Feverfew is anti-inflammatory and is one of the most commonly used herbal pain remedies for migraine and arthritis sufferers. This herb is a useful alternative to aspirin for cats (aspirin is toxic to cats).
To use feverfew as a pain remedy, use a tincture or tea. Use 12 drops of the tincture or 1/2 teaspoon of a strong tea for each 20 lb. of the dog's body weight, 2 times a day.