From Longman Dictionary of Contemporary Englishsuppressantsup‧press‧ant /səˈpresənt/ noun [countable] → appetite/cough/pain etc suppressant
Examples from the Corpus
suppressant• It was designed for use as an appetite suppressant, to be taken along with a certain pill.• No ionisation suppressant is specified for sodium or potassium determinations.• It is treated with an odour suppressant at the mill and is best spread straight from the bag and immediately ploughed down. 