Diet Horse ---when I suffered same shit --I smoked ,drank like a fish and worked 60/70 hours a week --
Imagine you have an open sore in your stomach and when you awake you pour tea/coffee on it while having your first smoke --its never going to heal ,I converted to porridge ,7 days a week --disgusting I thought but 30 years on I am still here with cholesterol still about 5---its a great start to the day --avoid harsh flavours --lemons --garlic --and shit food full of preservatives!
As for drugs when I went with my script to the local chemist in 1986--he remarked "I hope you have your cheque book "my months supply of the 3 tab shandy 260 pounds--a pint was about 1,30 and juice about 40 cent a litre --I think !
But I was right as rain in weeks --don't worry Horse you've escaped--