A question from me now, relevant more to people on your side of the Atlantic: You say that your doctor was quite willing to prescribe 'the whole thing', seeming to imply that was David's regime. Does this mean roxithromycin as well? I was under the impression that it just was not available in the USA or Canada, but maybe it is only like it is here: not on the national lists but may be prescribed if you can persuade a doctor to do so?
Also I am going to ask David about Tinidazole, because metronidizole still makes me feel very horrible. I found this on the internet:
Highly active against Entamoeba histolytica. Trichomonas vaginalis, Giardia lambila and anaerobic bacteria such as gardnerella vaginalis, Clostridium species. Tinidazole is converted to the active metabolite by reduction at the 5-nitro position. The active metabolite causes DNA damage in pathogens.
Tinidazole increases the risk of bleeding when combined with anticoagulants. When the drug is taken along with alcohol, disufiram like reaction occurs. Enzyme inducers ( phenobarbitone, rifampicin ) and cimetidine can reduce the metabolism of tinidazole.
Adverse Effect & Precautions
Nausea, epigastric discomfort, metallic taste, furred tongue, neuropathy, skin rash, uriticaria, angioedema, leucopenia, seizures on prolonged dyscrasias.