For this you'd need a specialist, but there are real alternatives that do not (typically) affect weight or sleep. Strattera and Intuniv are two.
Even though your anecdata is probably more valuable than the drug manufacturers warnings, it doesn't hurt to have more than one source...
From Strattera site:
"What are the common possible side effects of Strattera?
Common side effects in children and teenagers include upset stomach, decreased appetite, nausea or vomiting, dizziness, tiredness, and mood swings."
From Intuniv site:
"The most common side effects of INTUNIV include sleepiness, tiredness, trouble sleeping, low blood pressure, nausea, stomach pain, and dizziness"
