Oral use - How does body weight affect certain potentiators?

[LinusMundane]

SWIM likes to take the advise of those in the know here who speak on certain potentiators such as GFJ, tagament and Tums but is curious how he should adjust how much he takes in regards to his body frame/mass and weight.

SWIM is relatively short for his weight he is 5'11" and 240lb/109kg's. The GFJ he is not concerned about as he drinks 2 glasses of 100% white GFJ and waits at least 1/2 hour before any opiate enters his body. His regiment also includes taking one Tagament with his last gulp of GFJ. One Tagament is 200mg of Cimetidine, is that a sufficient amount to properly potentiate oxycodone? He also ingests 2 Tums Ultra 1000's after swallowing the tagament and then 4 more right before he takes his opiate. All of this is done on an empty stomach so the conditions should be correct for extended life out of his pill.

SWIM has tried this with 30mg of oxy(no apap) as well as 40mg oxycontin(wiped clean of the coating) and has noticed no difference in length or intensity of the high. SWIM is unsure what taking more Tagament could do to him as he has no intestinal problems and assumes lowering his stomach's pH could have an adverse effect so he wanted to find out what someone in the know would do to adjust his intake levels and achieve proper potentiation.

TIA