Drug Interaction Report
1 potential interaction and/or warning found for the following 2 drugs:
- ascorbic acid/collagen
- ephedrine nasal
Interactions between your drugs
ascorbic acid ePHEDrine nasal
Applies to: ascorbic acid/collagen, ephedrine nasal
Acidic urine increases the elimination of ephedrine and pseudoephedrine and decreases the elimination half-life. The clinical significance is unknown. The therapeutic effects of these agents may be decreased.
References (3)
- Brater DC, Kaojarern S, Benet LZ, et al. (1980) "Renal excretion of pseudoephedrine." Clin Pharmacol Ther, 28, p. 690-4
- Wilkinson GR, Beckett AH (1968) "Absorption metabolism and excretion of the ephedrines in man. I. The influence of urinary pH and urine volume output." J Pharmacol Exp Ther, 162, p. 139-47
- Kuntzman RG, Tsai I, Brand L, Mark LC (1971) "The influence of urinary pH on the plasma half-life of pseudoephedrine in man and dog and a sensitive assay for its determination in human plasma." Clin Pharmacol Ther, 12, p. 62-7
Drug and food/lifestyle 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.
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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. |
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Further information
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