I used arnica for bruises, and swelling and found it effective. 
I use Traumed more now though.  
What potencies were used in the trials?  
Were they matched with the individual? 

The trials used the following potencies of Arnica. Arnica 30X was used in the runner's trial. Some of the other trials used Arnica 6C and 30C. The remedies were not matched with the individual. Traumed is becoming a popular pain relief treatment. Do you find Traumed to be more effective than Arnica?

Arnica was the reason why I became interested in homeopathy. Back in 1995 I was suffering from very bad migraine headaches. Nothing was helping me and as a single mother and an immigrant I had to work a lot. Being sick all the time was interfering with my life and I would spend most of my days in bed throwing up and not being able to move. So out of desperation, I had tried natural products and one of them was a vial of homeopathic remedy for migraines. It did help a lot and that made me interested in what Homeopathy was. I was advised by the store owner to buy arnica as it was a good remedy to have. When I got home I started to read on the internet about arnica. One of the ailments which arnica was helping was bruising. My son who was seven years old had a big bump on his sheen. he had that for 8 months and he was given some creams by doctors which did not help. The bump was big enough that people would notice and ask him what happened. He injured his leg when he fell on train tracks. Next day when we were sitting in the kitchen and having breakfast I remembered about arnica. i told my son and he wanted to try. He took 3 pellets and then we forgot about it. I do not remember if it was on the second day or third that I remembered about giving him the arnica. We took a look at his leg and both of us were speechless. I got goose bumps on my skin from sudden emotion as it was a "miracle". There was no bump, however now his skin had some redness. That went away in couple of days. Since them we use homeopathic remedies for everything. I took two courses and also involved myself in private studies. Now I study for a diploma in Homeopathy and no longer use combination remedies as at first when I was taking the migraine formula. I prefer classical homeopathy and believe that not everyone can become homeopath. You really need to get deep into the science, be creative, be patient, use psychology, be intuitive and be an artist. I have a long way to go and more I study more I know that I will need to study longer. Homeopathy has been my passion since 1996. This is the best form of medicine as it works along your own defense/balancing system. You do not against it you go with it. When you get the right remedy and you know it and you feel your body responding to it...there is nothing better that that feeling. Curing myself from migraine headaches, allergies and so many other serious diseases gives you the confidence in your own body and your own healing powers within you. The most important thing is to find the right homeopath and be honest and objective when you have your consultation.