I placed 2 DHC continus pills in a glass of water to observe how quickly they dissolve. Its been 2 hours and they are only partially dissolved. Quick release pills of the same size would be fully dissolved in no more than 30 minutes. Is this prolonged dissolution the whole slow release mechanism or is it only part of it? For example are there compounds in there that cause the drug to be absorbed at a slower rate? I'm guessing not because that would just lower the bioavailability seeing unabsorbed compounds get excreted in the urine. I read this wiki page:
https://secure.wikimedia.org/wikipedia/en/wiki/Time_release_technology
and see now there are a variety of different time release mechanisms they use these days but I can't see any reason why dissolving beforehand wouldn't overcome all of the ones listed on that page.
Heres the excipients for DHC continus:
- Lactose (anhydrous)
- Hydroxyethylcellulose
- Cetostearyl Alcohol
- Magnesium Stearate
- Purified Talc
- Purified Water
I know lactose, magnesium stearate, talc are used in instant release pills so that just leaves hydroxyethylcellulose and cetostearyl alcohol.
https://secure.wikimedia.org/wikipedia/en/wiki/Hydroxyethyl_cellulose
https://secure.wikimedia.org/wikipedia/en/wiki/Cetostearyl_alcohol
So hydroxyethyl cellulose is a gelling/thickening agent and cetostearyl alcohol is an emulsion stabiliser and foam boosting surfactant. I'm gonna have to do a bit of research before I can conclude whether this time release mechanism is rendered useless by predissolution or not.
https://secure.wikimedia.org/wikipedia/en/wiki/Time_release_technology
and see now there are a variety of different time release mechanisms they use these days but I can't see any reason why dissolving beforehand wouldn't overcome all of the ones listed on that page.
Heres the excipients for DHC continus:
- Lactose (anhydrous)
- Hydroxyethylcellulose
- Cetostearyl Alcohol
- Magnesium Stearate
- Purified Talc
- Purified Water
I know lactose, magnesium stearate, talc are used in instant release pills so that just leaves hydroxyethylcellulose and cetostearyl alcohol.
https://secure.wikimedia.org/wikipedia/en/wiki/Hydroxyethyl_cellulose
https://secure.wikimedia.org/wikipedia/en/wiki/Cetostearyl_alcohol
So hydroxyethyl cellulose is a gelling/thickening agent and cetostearyl alcohol is an emulsion stabiliser and foam boosting surfactant. I'm gonna have to do a bit of research before I can conclude whether this time release mechanism is rendered useless by predissolution or not.
Last edited:
