Supplements dissolution time
92% of the preparations examined (79 out of 86) dissolved
within 60 min. For the remaining preparations, dissolution time
in hydrochloric acid exceeded 60 min. Similar results were
obtained with phosphate buffer. In the case of nearly half the analyzed
preparations (38 out of 86), dissolution time in the buffer
solution was not more than 30 min. In the case of 19 preparations,
this time did not exceed 60 min. For the remaining preparations,
dissolution time in phosphate buffer exceeded 60 min. Therefore,
it should be assumed that the great majority of active substances
contained in the supplements are available for absorption (see
Fig. 1).