I'm pleased you've found it beneficial, Alf
. It's certainly more effective for His Lordship's arthritis than Ibuprofen or any of the other conventional medicines.
I first encountered Devil's Claw in a BBC2 television programme earlier this year about alternative medicine. It was part of a series presented by Prof Kathy Sykes - her programmes are always worth watching and noting. This episode focussed on herbs and reported an apparently miraculous one called 'Sutherlandia' in South Africa which appeared to be effective against AIDS! One hospice reported a 50% recovery rate amongst patients who had been sent there to die, although the evidence was anecdotal.
The programme discussed another herb, ginko, which appears to be highly effective in treating Alzheimer's, although the evidence for this is also (at present) mostly anecdotal.
Prof Sykes then looked at herbs that had undergone rigorous medical tests and found that the vast majority of them are ineffective. However, there were 10 herbs (known as 'Super Herbs') which were exceptions. I can't remember all of them, but I do know that St John's Wort proved to be more effective for treating depression than any other proprietory drug currently available. Devil's Claw was another of these 'Super Herbs' and so was garlic, which improves the circulatory system.
The programme finished by considering the complex nature of herbs. Herb extracts contain hundreds of complex compounds which often complement each other. She looked at one herb and found that a flavinoid which would normally be too large to penetrate the membrane of a damaged cell could do so because the herb also had a compound with detergent properties which made the membrane more malleable. She contrasted this quality with modern medications which normally only have one complex compound. However, the programme also warned that not all the properites of herbs were benign and some could be toxic, so care has to be taken in using them.
Curiously enough, I was just watching a recording of the programme last night.
Gill