Just order some powder. $30 for 10 grams is way cheaper than anything you can find at a drug
My first trip on DXM
was about 130 mg (from about 3/4 a bottle of
robitussin pediatric). It was a moderate, enjoyable trip. Then I moved
onto drinking 3/4 a bottle of robitussin max, and that was a pretty
strong trip. Then I moved onto downing 20 robitussin gel caps (300 mg
of DXM). With the gel caps, the trip strongly depended on how much food
I had in my stomach. After eating a large meal, it was barely what I'd
call a trip. After doing it on an empty stomach, I was tripping so hard
I was litterally out of control and hardly remember half of what I did.
Now I trip on size 0 gel caps filled half way with powder, and it's
about 150-200 mg. This is my prefered dose. I can remember most of the
stuff I do, yet still get a nice euphoric, drunken like trip.