[Therapeutic characteristance and tolerance of topical comfrey preparations. Results of an observational study of patients].

Aim: To analyze the anti-inflammatory and analgetic properties of the topical comfrey, preparations Kytta-Salbe f, Kytta-Plasma f and Kytta-Balsam f applied to bruises, sprains and distortions and painful conditions of the muscles and joints.

Method: A prospective open multicentric observational study complying with paragraph 67(6) of the AMG and involving 162 general practitioners. During the two-week period of observation, the patients received an average of one to three applications of the comfrey preparation per day. All 492 questionnaires were evaluated. Efficacy and tolerability were assessed by both physician and patient.

Results: Pain at rest and on movement, as also tenderness, improved in the overall observation group by an average of 45-47%. The duration of morning joint stiffness decreased from 20 minutes initially to 3 minutes. During the course of treatment with comfrey, more than two-thirds of the patients were able to reduce or even discontinue their intake of non-steroidal anti-inflammatory drugs and other specific concomitant medication. In most of the cases, both effectiveness and tolerability were assessed to be excellent or good.

Conclusion: The results of the study confirm the effectiveness and tolerability of the topical comfrey preparation investigated in the treatment of bruises, sprains and distortions as well as painful conditions affecting muscles and joints.