Are stomach aches normal? How long until they go away? Is there any other medication without loss of appetite?

Yes, stomach aches can be a common side effect of certain medications, but they usually improve over time as the body adjusts. It is important to consult with a healthcare professional to discuss any concerns about side effects and to explore other medication options that may not affect appetite. It's important to prioritize your child's well-being and comfort, and to work closely with a healthcare provider to find the best treatment approach.