Drug Interaction Report
1 potential interaction and/or warning found for the following 2 drugs:
- Dynabac (dirithromycin)
- Fosteum (cholecalciferol / genistein / zinc glycinate)
Interactions between your drugs
dirithromycin genistein
Applies to: Dynabac (dirithromycin), Fosteum (cholecalciferol / genistein / zinc glycinate)
Antibiotics may decrease the effects of soy isoflavones such as genistein and daidzein. Soy isoflavones are converted into their active forms in part by intestinal bacteria, thus alteration of the intestinal microflora by antibiotics may decrease availability of activated isoflavones. Data are limited. In a study consisting of 11 children ages 4 to 17 years who were fed a body weight-adjusted dose of soy nuts, the urinary excretion rates for genistein and all native isoflavones combined (i.e., genistein, daidzein, and glycitein) were reduced by 37% and 24%, respectively, during oral antibiotic treatment for infection compared to the healthy state when not on antibiotics. The urinary excretion rate for total isoflavones (i.e., native and activated isoflavones combined) was also reduced by 24% during antibiotic administration. The clinical significance of these changes is unknown. There was some indication that the infectious process itself may have played a role, either by altering the colonic flora or some other mechanism, although the extent is unclear.
References
- Therapeutic Research Faculty (2008) Natural Medicines Comprehensive Database. http://www.naturaldatabase.com
- Halm BM, Franke AA, Ashburn LA, Hebshi SM, Wilkens LR (2008) "Oral antibiotics decrease urinary isoflavonoid excretion in children after soy consumption." Nutr Cancer, 60, p. 14-22
Drug and food interactions
No alcohol/food interactions were found with the drugs in your list. However, this does not necessarily mean no food interactions exist. Always consult your healthcare provider.
Therapeutic duplication warnings
No duplication warnings were found for your selected drugs.
Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.
Drug Interaction Classification
Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. | |
No interaction information available. |
Learn more
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Check Interactions
To view an interaction report containing 4 (or more) medications, please sign in or create an account.
Save Interactions List
Sign in to your account to save this drug interaction list.