The doctor recommended supplementary treatment methods.
Tips
usage
辅助 can be both a verb ('to assist') and an adjective ('auxiliary'). As an adjective it often precedes nouns: 辅助工具 (auxiliary tool), 辅助材料 (supplementary materials).
usage
辅助 implies a supporting/secondary role, while 帮助 (bāngzhù) is more general help. 辅助 is more formal.
