As long as sudocrem is under 100ml and in your liquids bag you should be fine.

Yes, you can take Sudocrem on a plane, but since it is a cream, it is subject to the liquids, gels, and aerosols (LAGs) restrictions for carry-on luggage. To bring it in your hand luggage, the container must be 100ml (3.4 oz) or less and fit inside your clear, quart-sized liquids bag. If you have a larger tub of Sudocrem, you must pack it in your checked baggage, where there are no size restrictions for non-flammable creams. If you need a larger amount of Sudocrem for a medical reason (such as for a baby's diaper rash or a specific skin condition), you can declare it at the security checkpoint as a medically necessary liquid/cream. In most jurisdictions, including under TSA and EU rules, medically necessary items are allowed in larger quantities, though they will be subject to additional manual screening. To make the process smoother, keep the product in its original packaging and inform the security officer before your bag goes through the X-ray machine.