fellow traveller (noun) collaborator: person who works with another
Sinonime: aid, alleviation, antidote, assistance, catholicon, corrective, counteractant, counteragent, countermeasure, drug, elixir, elixir vitae, fix*, healing, healing agent, help, medicant, medication, medicine, nostrum, panacea, pharmacon, physic, placebo, proprietary, quick fix, recovery, redress, remedy, reparation, restora-tive, therapeutic, treatment