Chlorhexidine
A) is an aldehyde.
B) is extensively used in antiseptics.
C) is ineffective against vegetative bacteria.
D) is limited in use due to its high toxicity.
E) commonly causes adverse side effects.

Question

Quizplus · Accepted Answer

Chlorhexidine is extensively used in antiseptics, such as skin disinfectants and oral rinses, due to its broad-spectrum antimicrobial properties. It is effective against both gram-positive and gram-negative bacteria, fungi, and viruses.

Answer: D 
 Chlorhexidine can have high toxicity levels, especially with prolonged use or if ingested. This limits its use and requires proper precautions, such as not using it on large skin areas or in patients with kidney or liver dysfunction.

Answer: E 
 Chlorhexidine can cause adverse side effects in some patients, such as allergic reactions, skin irritation, and staining of teeth or tongue. However, these side effects are relatively rare and usually mild.

Therefore, the best choices are B and D.