So this time I wasn't even seeking to get high, but it just happened. If you think it's bullshit it might be, but, I repeat, I'm not sure what triggered this and how it happened. I only know that it happened. So here it is: I weigh 100kg, caffeine tolerance. T+0.00: 06.30 in the morning, I got up after a sleep of 5 hours. Took 400mg caffeine orally to get awake and alert. (2 x Vivarin 200mg) T+0.45: my stomach started to hurt really bad, I am 100% sure that it wasn't the vivarin tablets. Stomach pain was pretty much unexplainable, I had exactly the same pain a couple of days before this. T+1.00: SWIM treated pain with 120mg Tramadol, orally ingested (slightly over normal/therapeutic dosage). T+2.00: I went to a friend's house. On the way, the Tramadol came up, stronger than usual. Walking required attention from SWIM. Felt somewhat dizzy. T+3.00: Dizziness was increasing, I got extremely tired. (Tramadol never made SWIM really tired, and this time he consumed caffeine, too). I was with his friends. When there was nothing to do, like when somebody else took over the conversation, SWIM fell asleep and woke up rapidly, this happened over and over (half-sleeping and staying awake alternated). T+4.00: I started to get a headache (he currently got a flu), and wanted to take some Ibuprofen, but the friend had nothing at his place. Another friend went to the pharmacy and retured with a package of Algocalmin (500mg Metamizolum = analgesic, antipyretic). I took two of those. T+4.30: The headache went away, the stomach pain stayed away, but the feeling was far from comfortable. It wasn't unpleasant either, only strange. If required, the mind was still clear, but some friends later told SWIM he was a little more philosophic than usual. Still very tired. T+5.00: Something strange happened: I was getting tactile hallucinations (tactile=related to the sense of touch). Some examples: - SWIM constantly felt as if someone was putting his hand on my forehead (like when you check for fewer). - I felt his clothes to be "alive", it was really strange, difficult to describe. - SWIM repeatedly felt like someone hits him (not hard) in different areas (head, foot, arm, back), or puts his hand on my shoulder. All the feelings seemed real and SWIM often turned around to see who hit him but there was nobody. - My friends and I went to the park, and once when I was sitting on a park bench, he suddenly felt as if he had no shoes, just socks on his feet (in the park ), looked at his feet, everything was normal. - SWIM also noticed an increased sensibility of the skin on his face (light scratching felt stronger, almoust painful) T+7.00: I went home, effects were getting weaker, but still there. As the effects wore off gradually, SWIM lost his tiredness. T+9.00: Over. I am fresh again. ------------------------ Might sound like bullshit but it isn't. What could have been responsible for this? It can't be considered a "high", but it wasn't normal either. EDIT: Forgot to mention that all tactile perceptions were somewhat altered while on this combo. It is quite similar with that feeling one gets when he lies on his hand for a while and no more blood circulates. But it did not feel *exactly* like that to SWIM. .