Interestingly tramdol itself isn't actually that powerful in its effects (roughly the same as codeine). The liver converts tramadol to a metabolite which is responsible for the stronger painkilling effects. That means, depending on your liver biochemistry, you may experience different reactions to tramadol than other people. Personally I find taking tramadol gives me horrendous insomnia and itching.Tramadol........ 2,000mg, will see you off nicely.
Not that that would be an issue at the dosage you prescribed, Red would be rather more preoccupied with the hallucinations of giant hairy spiders and the fact he was having difficulty breathing.
Plus the constipation afterwards