cyproheptadine vs Periactin

cyproheptadine and Periactin both are nouns.

Word	Noun	Adjective	Verb	Adverb
cyproheptadine	Yes	No	No	No
Periactin	Yes	No	No	No

As nouns, cyproheptadine and Periactin are synonyms defined as:

cyproheptadine and Periactin: an antihistamine (trade name Periactin) used to treat some allergic reactions

cyproheptadine (noun)	Periactin (noun)
an antihistamine (trade name Periactin) used to treat some allergic reactions	an antihistamine (trade name Periactin) used to treat some allergic reactions