Answer
They have the same active ingredient but differ in administration, excipients and licensed age range. Oral solution is measured with a syringe, orodispersible tablets dissolve on the tongue and film-coated tablets are swallowed.
Sources for this answer
- Levocetirizine dihydrochloride 5 mg orodispersible tablets — Current selected SmPCemc · Summary of Product Characteristics
- Levocetirizine 5 mg film-coated tablets — Current selected SmPC