Phenytoin

Question 1

Therapeutic range

Answer 1

10-20mg/L

Question 2

Patient advice

Answer 2

Same brand
Tabs 100mg = liquid/ base 92mg
Han-chinese/ Thai Avoid and increased
- Steven Johnson syndrome

Question 3

Monitoring

Answer 3

Serum levels 
FBC
Liver function
BP
ECG
Vit D levels

Question 4

Side effects

Answer 4

BLOOD
- sore throat, mouth ulcers, bruising
SKIN
-rash ( discontinue I'd rash develops)
Nystagmus 
Slurred speech
Confusion
Ataxia
HypERglycaemia 
Rickets / osteomalacia 
- softening of bones