Panax Notoginseng - Aspirin, Caffeine, Dihydrocodeine Bitartrate Interaction
Herbal: Panax Notoginseng
Also Known As: Panax notoginseng, Field Seven, Noto-Gin, Notoginseng, Samch'il, Sanchitongtshu, San Qi, San Qui, Sanchi, Sanchi Ginseng, Sanqi, Sanqi Powder, Sanshichi, Three Seven, Tian Qi, Tian San Qi, Tienchi, Tienchi Ginseng
Drug: Aspirin, Caffeine, Dihydrocodeine Bitartrate
Brand names:
Synalgos DC

Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 04, 2025
Interaction Details
Aspirin, Caffeine, Dihydrocodeine Bitartrate is classified as belonging to the following category: Cytochrome P450 1A2 (Cyp1A2) Substrates
Theoretically, taking Panax notoginseng might reduce the levels and clinical effects of CYP1A2 substrates.
Animal research shows that administering Panax notoginseng intravenously for 7 days before intraperitoneal injection of caffeine can decrease maximal blood levels of caffeine by 37%. This interaction was attributed to the ability of Panax notoginseng to increase the activity of CYP1A2.
Interaction Rating
Likelihood of Occurrence
PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
References
- Liu R, Qin M, Hang P, Liu Y, Zhang Z, Liu G. Effects of Panax notoginseng saponins on the activities of CYP1A2, CYP2C9, CYP2D6 and CYP3A4 in rats in vivo. Phytother Res. 2012 Aug;26(8):1113-8.
Interaction Details
Aspirin, Caffeine, Dihydrocodeine Bitartrate is classified as belonging to the following category: Aspirin
Theoretically, taking Panax notoginseng concomitantly with aspirin may increase the risk of adverse effects from both products.
Animal research shows that taking Panax notoginseng extract with aspirin increases blood levels of salicylic acid by approximately 50% and blood levels of Panax notoginseng by 75% to 196%. This effect may be due to increased absorption of both products.
Interaction Rating
Likelihood of Occurrence
PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
References
- Tian Z, Pang H, Du S, Lu Y, Zhang L, Wu H, Guo S, Wang M, Zhang Q. Effect of Panax notoginseng saponins on the pharmacokinetics of aspirin in rats. J Chromatogr B Analyt Technol Biomed Life Sci. 2017 Jan 1;1040:136-143.
- Tian Z, Pang H, Zhang Q, et al. Effect of aspirin on the pharmacokinetics and absorption of panax notoginsengsaponins. J Chromatogr B Analyt Technol Biomed Life Sci. 2018 Jan 2;1074-75.
Interaction Details
Aspirin, Caffeine, Dihydrocodeine Bitartrate is classified as belonging to the following category: Caffeine
Theoretically, taking Panax notoginseng may decrease the levels and clinical effects of caffeine.
Animal research shows that administering Panax notoginseng intravenously for 7 days before intraperitoneal injection of caffeine can decrease maximal blood levels of caffeine by 37%. This interaction is attributed to the ability of Panax notoginseng to increase the activity of cytochrome P450 1A2 (CYP1A2) enzymes.
Interaction Rating
Likelihood of Occurrence
PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
References
- Liu R, Qin M, Hang P, Liu Y, Zhang Z, Liu G. Effects of Panax notoginseng saponins on the activities of CYP1A2, CYP2C9, CYP2D6 and CYP3A4 in rats in vivo. Phytother Res. 2012 Aug;26(8):1113-8.
Panax Notoginseng Overview

Panax Notoginseng - More Interactions
Panax Notoginseng interacts with 206 drugs
Interaction Rating Key
These severity listings are for informational use only. Never start, stop or otherwise change your therapy before speaking with your provider.
Major | The combined use of these agents is strongly discouraged as serious side effects or other negative outcomes could occur. |
Moderate | Use cautiously under the care of a healthcare professional or avoid this combination. A significant interaction or negative outcome could occur. |
Minor | Be aware that there is a chance of an interaction. Watch for warning signs of a potential interaction. |
Unknown | No interactions have been reported or no interaction data is currently available. |
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Parts of this content are provided by the Therapeutic Research Center, LLC.
DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
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Drug descriptions are provided by MedlinePlus.