Pills with imprint I 4

The imprint I 4 is used by 4 distinct products in our FDA label database, covering 4 different medicine(s). An imprint alone does not always identify a pill — makers reuse short codes — so always compare the colour, shape and size as well.

Imprint	Medicine & strength	Colour	Shape	Size	Labeler
I 4	Glimepiride 4 mg	White	Oval	8 mm	Remedyrepack Inc.
I4	Ibuprofen 400 mg	White	Oval	16 mm	Remedyrepack Inc.
I4	Amitriptyline Hydrochloride 75 mg	Brown	Round	10 mm
I4	Quetiapine Fumarate 400 mg	White	Round	13 mm

Source: FDA label data via DailyMed/openFDA, export of October 29, 2026.