I have personally experimented with several different manufacturers products and have found repeatedly that one or two types will have one effect, despite dosage and others would have others!
Have you done this without knowing what you were taking? Did someone pick the dose and then give it to you without telling you what it was? Obviously when you've taken one blotter and thought "That's the stuff that gives me a headache". The next time you take it it's a good bet it will give you a headache.
The famous Owsley story needs repeating here. Owsley heard people claiming they were getting different effects from LSD so he made one batch and then dipped the blotter in a different coloured food dye. Sure enough he started hearing reports that "The green acid is a bummer, but the yellow is righteously mellow and the red is a total bodyfuck". He was laughing his bollocks off over what people were claiming about the acid. It was complete and utter horseshit.
Have you done this without knowing what you were taking? Did someone pick the dose and then give it to you without telling you what it was? Obviously when you've taken one blotter and thought "That's the stuff that gives me a headache". The next time you take it it's a good bet it will give you a headache.
The famous Owsley story needs repeating here. Owsley heard people claiming they were getting different effects from LSD so he made one batch and then dipped the blotter in a different coloured food dye. Sure enough he started hearing reports that "The green acid is a bummer, but the yellow is righteously mellow and the red is a total bodyfuck". He was laughing his bollocks off over what people were claiming about the acid. It was complete and utter horseshit.