Thread resurrection time, i've been looking into DXM (i am from the UK) and the internet tells me that the best/most available DXM-containing syrups are as follows:
Benylin Dry Cough Original: 150ml - 195mg DXM + 420mg DPH. Also contains 2mg Levomenthol per 5ml, but i don't think a few hundred milligrams of mint-extract will be a problem.
Benylin Dry Cough Non-Drowsy: 150ml - 225mg DXM
Robitussin Dry Cough: 100ml - 150mg DXM - 250ml - 375mg
So far my plan is to buy one of the Benylin Original bottles (for the DPH, some people in this thread don't realise the value of an anti-histamine during a DXM trip, apparently the synergy is fantastic and side-effects of the DXM such as robo-itch are diminished) and one of the Non-drowsy bottles from another store. (coincidentally this produces a delicious beverage containing 420mg apiece of DXM + DPH, fuck 300/300.)
I wanted to ask (from fellow UK-fags who actually have experience buying DXM-containing cough syrup), are these the only-size bottles of Benylin/Robitussin? And does a 420/420 sound like too much for a first timer to both substances?