Maintenance dose for my 5yo DD who is 39lbs is 1.5tsp once a day. I agree with others that sometimes you have to start at the higher dosage and work your way down a bit until you find the right amount.
ETA: our ped suggested staying on it for 3months to give the colon a chance to regain shape and elasticity.
Mom to two amazing DDs ('07 & '09) and a fur baby.
Gluten free since Nov '11 after non-celiac gluten sensitive diagnosis. Have had great improvement or total elimination of: migraines, bloating/distention, heartburn, cystic acne, canker sores, bleeding gums, eczema on elbows, dry skin and scalp, muscle cramps, PMS, hair loss, heart palpitations, fatigue. I'm amazed.