Wow - rotating opioids has pretty much been discredited, unless it's specific to your case.
I have to remind people that as synthesized, tramadol is in fact FOUR stereoisomers, the cis-pair being used medically. The bizarre thing is that the (1R, 2R) aka (+)-cis enantiomer, the semi-rigid homologue of codeine is responsible for almost 100% of the analgesia in man.
I have posted how cheap tramadol is and how simple it is to resolve those two cis isomers and then how simple to O-demethylate - (+)-cis ODMT having been shown to be around 2.5x more potent as an analgesic in man (orally). I would guess via paretheral administration and based on animal models it's a lot like morphine i.e. five times as active.
So why then is the cis-pair still the only form used medically? Because it was only ever sold as 'less abusable than codeine' without anyone adding 'oh yeah, also vastly more toxic in overdose'.
We had a mini-epidemic of mostly young people dying because they were messing with codeine phosphate tablets where a strip of 10 x 30mg provided them with a decent 'buzz' and street-wisdom suggested that 10 x 50mg tramadol should have more or less the same effect. So sad to say a lot of kids ended up dead - seizures being common.
Your tramadol safety concerns and also the enantiomeric part of your post is very true.
This seizures are preventable ( if u are lucky and some antiepileptic med will do absolutely nothig except only one effect - eliminating seizures completely. Which I am lucky in this situation ).
Many ultra rapid metabolisers are able to achieve long and semi amphetamine-like hybridhigh with tramadol, feeling ENERGY, EMPATHY, very intense opioid effects later when u have been through 3 hpurs of the high it can provide. I loved it but it is unfortunately more toxic then for example codeine phosphate. Yes it's true and it is also really cheap to produce compared to other mild ( if recommended doses are taken ) opioids.
Rotrating is not done usually.
My doctors from private algesiology clinic and me realised after a while that for me it does help preventing tolerance from getting higher but like i mentioned, morphine which they chose do less for me compared to dihydrocodeine and tramadol is used only after 2 rotations of previous were done because while it works for me it is dangerous because of seizures. I had many seizures, some of them while falling down the stairs. I had to learn how to write again after one
Classic codeine works for me too but for some another individual reason i coudn't stop tolerance to build RAPIDLY and they also say it is not very effective after certain dose because enzymatic metabolism to more potent metabolites is often reduced by the codeine - simply they know that codeine can prevent itselt from turning into morphine ( and others ). Tramadol do not have this disadvantage but it has even worse one - seizures.
So...after not even oxycodone was doing much for me and not wanting to go into hydromorphone again we made decision than dihydrocodeine is my individual preffered option.
And we tried many, i am on prescriptions for many years now...
Drugs including opioids can be very individualy different in effects.
Somebody would take oxy immediately rather than other choices but i found the best effects, most positive effects and least negative with dihydrocodeine which is quite poorly described in literature. U need to dig deepet to find the right descriptions ( i mean research proved descriptions like potency to receptors, half-life, bioavailability and metabolism into many metabolites....
Just try to find the righ one for YOU and avoid very appealing ones not because they can't be used safely but to use them when something serious happens and suddenly your casual painkillers will not help.
Just my advice.
Have a nice and healthy day everybody.