Cases of contact dermatitis due to a Chinese herbal orthopaedic solution Tieh Ta Yao Gin and its putative ingredients are reported. Patch testing demonstrated allergy to mastic and myrrh.
– Contact Dermatitis 1993 Feb;28(2):89-90 — Allergic contact dermatitis due to a Chinese orthopaedic solution tieh ta yao gin. — Lee TY, Lam TH.

The results of this study indicate the necessity of prolonged studies with novel plant extracts as short-term beneficial results could be overturned by adverse effects after repeated usage.
– Phytother Res 2000 Sep;14(6):452-6 — Evaluation of massage therapy with essential oils on childhood atopic eczema. — Anderson C, Lis-Balchin M, Kirk-Smith M.

Myrrh has previously been shown to possess smooth muscle-relaxing properties.
– Planta Med 1997 Jun;63(3):251-4 — Minor components with smooth muscle relaxing properties from scented myrrh (Commiphora guidotti). — Andersson M, Bergendorff O, Shan R, Zygmunt P, Sterner O.

The extract of myrrh gum increased glucose tolerance in both normal and diabetic rats.

– Acta Diabetol Lat 1987 Jan-Mar;24(1):37-41 — Studies on the activity of individual plants of an antidiabetic plant mixture. — Al-Awadi FM, Gumaa KA.