Puja
I usually give hydrea right before he goes to sleep (usually he has his dinner before sleep too). When i tried the hydrea before a year or more ago, i noticed that it caused him a kind of dizziness and stomache so i prefered now before going to sleep. Maybe his body got used to it but i just prefer givng it before bed time in case anything happenes.
As forthe L-carnitine, i want you to make sure that you give it 5 days per week (two days off) cause as i told you Dr.El Beshlawy warned me that this is how it is taken as studies showed that it might cause bone marrow depression when taken continously. In intermedias in particular, this could be a really serious side effect. Studies were done on 50mg/kilo though it could be taken up to 100mg.
So to sum up make sure you give Prat 50mgX30kg(his weight)=1500 mg of L-carnitine a day divided to 2 or three doses. GIVING TWO DAYs OFF, Saturdays and Sundays as you suggested will be fine.
manal