These antibiotics can cause brown, yellow-brown, or gray tooth discoloration:
These antibiotics may cause greenish or a blue-green grayish color:
Too much fluoride can lead to white streaks on the tooth enamel, or a whitish-brown discoloration.
Iron salts taken by mouth can lead to black teeth.
Amoxicillin-clavulanate (Augmentin), used to treat bacterial infections
Chlorhexidine, an antiseptic/disinfectant
Doxycycline, used to treat acne
Tetracycline, used to treat acne and some respiratory infections
Ciprofloxacin (Cipro)
Minocycline