" Originally Posted by footscrazy
The solubility of paracetamol is 9.44mg per ml of water at 10 degrees celcius. So for a 40 tab extraction, if you're using the common method of using 2mls water per pill, you've got 80mls of water. At 9.44mg paracetamol dissolving per ml of water, you'd expect to be left with 755.2mg of dissolved paracetamol in your final extraction. That's just about 1 and a half tablets, which is well within the recommended dosing of paracetamol. Any amount of paracetamol still does work your liver, and it is wise to give it a break, but that is a fairly safe level. Of course this doesn't include any undissolved paracetamol coming through the filter, which means it is important to try and get your cdub as clear as possible.
Source here (with paracetamol solubility in 0, 5, 10, 15, 20 and 25 degrees celcius water too)
Solubility of ibuprofen in water at 25 degrees ceclius is <1mg/ml."
I think it is worth mentioning that those figures are only a rough guide and would vary greatly.
A bigger concern than liver toxicity at that dose is damage to the gastrointestinal tract. Ibuprofen and NSAIDs in general are a leading cause of gastric and duodenal ulcers in Australia. We are not talking about chronic overdosing either (well technically we are talking about over dose because these drugs shouldn't be taken in the long term), ulcers and damage happen at regular doses. The lining of the stomach is protected from it own digestive juices, NSAID's temporarily inhibit (at the recommended dose) the stomachs ability to secrete the protective allowing the hydrochloric acid in the stomach to eat away at the stomach lining. Ibuprofen specifically has been shown to be directly caustic to the mucosal lining of the intestine.
If we all start doing CWEs on plain ibuprofen tablets (cheap supermarket pills), we could easily get a good visual (and weight if you have mg scales) idea of quantity of crap that makes it through our CWEs. Just filter the CWE to crystal clarity and let the extract evaporate recrystallising the ibuprofen or paracetamol that made it through the CWE. If we are careful and thorough in our written descriptions our CWE attempts we could all post and compare pictures and weights etc. We could have the best possible procedure down in no time and we'd know with more confidence the safety and risks of CWE. If it turns out there are water soluble fillers we could probably deduce the amounts with a mg scale and the known weight of each filler in each pill.
It'd be easy and worth while if more than a few people did it.