If the 30mg was not MR ('modified release', essentially this will release half right away, then the other half over the next few hours; I'm not sure there is 'M

If the 30mg was not MR ('modified release', essentially this will release half right away, then the other half over the next few hours; I'm not sure there is 'MR' Adderall in every country or even if it's officially called 'MR' at all), then 30mg is a very high dose, even for someone as heavy as yourself. 20mg MR or 10mg 'straight up' is 'moderate' and will be noticeable by most people.