Oh, Celia, I'm sorry your pup is dealing with this, it's heartbreaking to hear your pup is in pain.
I chose to go the natural route with my two late doggos, (17 years/19 years) because I know that pharma meds help a lot, but also have a damaging effect on the liver and kidneys, as so many do. Roxie (19) in her late stages of cancer was given tramadol, and it had damaged her kidneys, so that was a no for me. Nevertheless, less you have as a dog owner you always have to weigh your pros & cons, but then my vet is both, a general and holistic vet.
I used the first 5 below with very good results
Comfrey - has pain relief and anti-inflammatory properties (my vet mixed a tincture)
Frankincense - is an all-around perfect herbal remedy (my vet mixed a tincture)
From other dog owners I've heard they use:
Turmeric- has been used in Ayurvedic medicine to treat arthritis and other forms of pain. It must be of medicinal grade quality. The dosage of turmeric for dogs lies between 15 and 20 milligrams per kilogram of body weight, and you can add it to your dog’s food. It is best to but the organic turmeric as it usually contains a high amount of the active ingredient curcumin, which gives an anti-inflammatory effect.
https://www.dorwest.com/p...ablets-for-dogs-and-cats/Arnica Montana - is effective for relieving the pains of inflammation, sprains, bruises, and arthritis. The oral form of administration works faster. You can dissolve three granules/drops per weight in 5 ml of water, and give your dog twice daily. But make sure you administer this homeopathic remedy separate from your dog’s meals.
https://www.homeoanimal.c...NJc2DzkoBheAaAvilEALw_wcBGlucosamine & Chondroitin Sulfate - is known for their anti-inflammatory properties. Chondroitin is also found in cartilages and bones, and they are found in supplements derived from animal cartilage. These two compounds are very effective in treating arthritis, and they have been shown to relieve inflammation and pains in the joints. When you add these compounds as supplements to your dog’s diet, it helps to repair and build tissues such as cartilages that work to protect their joints.
https://extendpets.com/us...NHZals10_VL8aAn1PEALw_wcBHarpogophytum - is an anti-inflammatory herb that can be used to treat chronic conditions over a long period without causing any harm to your dog. Its main constituent is harpagoside, which can reduce inflammation and decrease pain quickly. This makes it one of the best choices for treating arthritis and muscle pain - - BUT it can interact with some pharmaceutical drugs like hypertensive or cardiac drugs. So if your dog is on any medication, ensure you consult your vet doctor before using the harpogophytum.
The first three did not and do not interact with her Tramadol or Cancer meds use, and helped a lot in pain reduction, movement, and overall comfort. I also have to say, we stopped Tramadol after her first bloodwork check.