Pseudoephedrine is also called by the brand names Sudafed or Galpseud Linctus.
When it's mixed with other medicines, it can also be called Benadryl Allergy Relief, Benylin Day & Night, Boots Chesty Cough & Congestion Relief, Multi-Action Actifed Tablets, or Galpseud Plus Linctus (you'll need a prescription for this because it comes in a 500ml bottle).
there's daytime and nighttime versions. I often take nighttime sudafed or Benadryl when boarding a flight from here to the UK. knocks me out, I can usually sleep for nearly all of the seven hour flight, very little jet lag.