P medicines

Question 1

Is it illegal to sell pseudoephedrine higher than 720mg and ephedrine higher than 180mg?
If yes, explain why.

Answer 1

yes. ephedrine + pseudoephedrine = methylamphetamine (class A drug)

Question 2

What’s the max pack of codeine and dihydrocodeine I’m able to sell as a P ( including effervescent)

Answer 2

32