Pupils usually look like this on MDMA:
This might help (to do with dosage) http://www.erowid.org/chemicals/mdma/mdma_dose.shtml
I've never had under 130mg so I'm not sure what 50mg would be, it's not overpowering so personally I'd go for the full 100mg, as even that is a light dose but you'll still have your wits about you (when you stop rolling again like a tard).
This might help (to do with dosage) http://www.erowid.org/chemicals/mdma/mdma_dose.shtml
I've never had under 130mg so I'm not sure what 50mg would be, it's not overpowering so personally I'd go for the full 100mg, as even that is a light dose but you'll still have your wits about you (when you stop rolling again like a tard).

