Fairwind said...
To make the drug "time released" it is mixed with a "carrier", a wax-like substance that slowly dissolves and releases the drug over a time period of up to six months..Sometimes it forms a lump and sometimes it does not..But applying a heat-pack might be a no-no as it could dissolve the carrier and release the drug more quickly than intended...The six month shot could wear off much sooner...
This is an excellent descript
ion of the time-release strategy used for some hormone therapy drugs but, as I seemed to recall, not for Lupron. I know that Firmagon works that way, for instance. When I was on Firmagon I could feel the depot like a motel-size bar of soap under the skin on my lower belly. It was injected as a thick liquid and set up as a very firm gel.
I guess it is possible that the drug Leuprolide acetate (Lupron) is delievered in more than one way but the descript
ion of the drug I found at
dailymed.nlm.nih.gov/dailymed/archives/fdaDrugInfo.cfm?archiveid=14497 seems to indicate that it is delivered in slow-dissolving micro spheres.
The spec said...
LUPRON DEPOT–3 Month 22.5 mg is available in a prefilled dual-chamber syringe containing sterile lyophilized microspheres which, when mixed with diluent, become a suspension intended as an intramuscular injection to be given ONCE EVERY THREE MONTHS (84 days).
The front chamber of LUPRON DEPOT–3 Month 22.5 mg prefilled dual-chamber syringe contains leuprolide acetate (22.5 mg), polylactic acid (198.6 mg) and D-mannitol (38.9 mg). The second chamber of diluent contains carboxymethylcellulose sodium (7.5 mg), D-mannitol (75.0 mg), polysorbate 80 (1.5 mg), water for injection, USP, and glacial acetic acid, USP to control pH.
What I used to get from Lupron was a bruise that showed as a black spot 3/4 of an inch across. It always made me think of pirate movies. The "Cursed Black Spot" Arrrrrrrh!!