A method for repeatable loading of propranolol hydrochloride as a model drug onto the ion exchanger Amberlite TM IRP69 was developed and different parameters for the loading process were evaluated due to their impact of the extent of loading. It was found that the extent of loading in equilibrium is widely independent of the experimental method used. However, a magnetic stirrer comminutes the i...

seemedtobedark.Thenarrowingof the retinalvesselsanddisc pallor diminished gradually over time. In the late phase of the attack (after 1 minute 28 seconds), the retinal vessels were dilated and the disc was hyperemic. Video 2 and Video 3 show the reperfusionof the retinal circulation in the late phase. The images obtained immediately after the attack (Figure 2) show thedilatedretinalvessels in t...

spectrophotometric and electrochemical studies were successfully used in quantitative analysis of amitriptyline hydrochloride (ath) and nortriptyline hydrochloride (nth). conductometric titration were carried out in equeous solution using iodide and dopamine and serotonine as titrant. two new methods using spectrophotometry are dascribed for the determination of (ath) and (nth) with potassium b...

BACKGROUND Previous studies have suggested that bipolar patients are supersensitive to light suppression of melatonin and that this may be a trait marker for genetic vulnerability. The present study was an attempt to replicate and extend this observation. Propranolol hydrochloride effects were compared with light effects because of the documented influence of beta-adrenergic receptors on melato...

In developing countries, the cost of antihypertensive medications is one of the principal limiting factors when trying to treat patients with high blood pressure. To determine the changes in cost (in US dollars) of these medications and in the percentage of the minimum wage needed to purchase them, two cost studies (1990 and 1996) done in Mexico were compared. The yearly cost of a treatment wit...