Are any homeopathic pain remedies effective?

No: In my opinion, no ! unless it is the "placebo effect".

If done right, YES!: It's important to first have a good medical evaluation of your pain; your primary care doctor can help you. If this is chronic pain, with no acute or life-threatening condition going on, see an experienced homeopath for a thorough case-taking of your pain. Only then can an effective remedy be prescribed. For example, take arthritis: http://homeopathyusa.Org/home/eb/arthritis.Html.