Faint unpleasant physical effects

2. T+01:30:00 [intensity]

intensity 

+ PLUS ONE — Clearly noticeable. You can tell when it began and how it's changing, though its full character isn't apparent yet.

3. T+00:00:00 [note]

There was possibly some activity, but it was unpleasant, marked by salivation and aching muscles and joints. An earlier attempt at smoking the material had produced almost nothing, and the writer judged it clearly weaker than related compounds.