“…Trials have been reviewed systematically with regards to their quality and results concerning safety and efficacy of Harpagophytum preparations in publications between 1973 and 2019 [ 17 , 23 , 139 , 156 , 417 , 418 , 419 , 420 , 421 , 422 , 423 , 424 , 425 , 426 , 427 , 428 , 429 , 430 , 431 , 432 , 433 ]. Another set of reviews considered the efficacy of devil’s claw preparations or its active compounds in specific need states [ 23 , 130 , 434 , 435 , 436 , 437 , 438 , 439 , 440 , 441 , 442 , 443 , 444 , 445 , 446 , 447 , 448 , 449 , 450 , 451 , 452 , 453 , 454 , 455 ,…”