Arghh

If you're giving calpol then it sounds like he's poorly or teething too poor thing. Could he be looking for extra connection? Sounds like he's struggling bless him

my daughter is 14 months & 2 weeks and she’s the same. she shouts back when you tell her no, she’s started hitting, throwing her toys & head banging!! it’s so hard to know what to do because she’s too young for me to sit down and try have a conversation with her about it😂🙈

It's likely not the age, if he's unwell that's likely to be a reason why. Sometimes you don't realise they're feeling rubbish because they don't show it in the same ways as we do. But as he's on Calpol he must be poorly, plus he's really little and this shit is extremely frustrating but also totally normal. Now's a good time to consider what boundaries you want to set, what hill you want to die on etc. Like if he enjoys throwing, can you get some things he can throw? So anytime he throws something you don't like you could sub in the ball or whatever and encourage him to throw, bounce etc? If you're struggling with tantrums and not sure what to do I recommend the book "how to talk so little kids will listen". It helped me reframe my frustration a bit and when I actually remember to use the tactics from it they do always work!