| Analytical methods which will work on undiluted, individual ingredients may not work well on finished products containing other non-herbal ingredients or excipients. |
| Plant-derived substances serving as pharmaceutical excipients, such as starch, methylcellulose, guar gum, vegetable oils, fatty acids, cocoa butter and candelilla wax. |
| Sometimes, these excipients also act as drug releasers by releasing controlled amount of the medication after ingestion of the same. |
| A second investigation revealed that the decrease of bioavailability of R with H was not due to the excipients present in H tablets. |
| Most tablets and some capsules contain fillers, binders, or excipients. |
| Alternately, the drug and its excipients can be made into particles of various sizes. |
