Rheumalin Pain Killer Oil in homeopathy provides fast relief from joint and muscle pain with natural, effective ingredients. Safe and gentle for everyday use. Dr. S.C. Deb Homoeo Research Laboratory (PVT) LTD. is Leading homeopathic medicine manufacturers in India and Kolkata. Trusted among top homeopathic companies and brands. Best homeopathy medicine shop in Kolkata. Dr. S.C. Deb Homoeo Research Laboratory (PVT) LTD. is not only one of the most renowned and a reputed manufacturers of homoeopathic medicines in West Bengal but also an exporter of it across the world. It has a wide distribution network of homoeopathic medicines all over India.