Emerson Ecologics®: T-Relief Arnica+12 Extra Strength 50mL. Arnica is a widely used for healing and pain after injuries. To Arnica we add 12 plant-based pain relievers (like Calendula, Echinacea, Hypericum, etc.) to further support your natural healing process and provide a higher level of relief on more types of body pains including joint, back, muscle and nerve pain.