^ That
And you need an antihistamine if you’re taking codiene - The “Classical “ First Gen are certainly best, for multiple purposes, however many are mild-moderate 2D inhibitors
Hydroxyzine works wonders and is a very good potentiator, in general - and no enzymatic reactions to concern with; otherwise, 20ng Cetirizine should help itching and reduce/ prevent the rather large histamine release - otherwise 25mg Diphenhydramine shall certainly help, and a single dosewshouldn’t interfere with 2D mediated d-m conversion to morphine
There is a cross tolerance between opioids, and Codiene is relatively mild, however it is converted to morphine (unless you are a “poor” metabolizer) and, also a secondary metabolite, CG3(?) Point is response Shall vary; maybe split your dose; 70-140mg, divided in two - Sonething like 50-100mg to start, 30-40 minutes later, another ~50mg, or just whatever dose divided in two. Just be aware that their are Ultra Rapid metabolizers, who get an extra kick of morphine after a moderate-large codiene dose, and poor-intermediate metabolizers who get less
This is mostly just an educated guess and estimate for reference, thought a “Normal intermediate or extensive metabolizer gets 2.5-10%, (morphine content) an Ultra - Rapid May get double this amount, a poor metabolizer on the low end of the spectrum, sometimes less - To put it simply, as our esteemed BL’er said, you can take more, yet rarely less. Just be safe,(It’s codiene, so mindful should work) and hopefully enjoy it - LuckMallet (Ha!)
(At least we can reverse mini status if someone spikes your elixir) Seriously, autocorrect placed that as an option!