mkm1971
April 6, 2026, 12:59am
1
Situation
Tried fresh install same issue
OpenEMR Version
Browser :
Operating System
moussa
April 6, 2026, 6:49pm
2
Khalaf:
Hi @mkm1971 ,
I do not have an answer to your issue but I was wondering how did you get to this page (Medications?? / Prescriptions??) I have not paid attention to it from my end.
mkm1971
April 7, 2026, 3:58pm
3
@moussa Hi so when you upload Rxnorm and Rxcui in the drugs npl i have enabled that so when you add 2 prescprtion or drugs you will be able to see it below.
1 Like
moussa
April 7, 2026, 4:31pm
4
I am thinking it is related to this, RxNav’s drug/drug interaction features were discontinued:
opened 08:48AM - 24 Oct 16 UTC
e-Prescribe
Sherwin recently contributed code that is a nice starting point for drug-drug in… teraction which was brought into the codebase:
https://github.com/openemr/openemr/commit/43694fd3a580bf4425624737a54454a1e7923dd0
The option for turning it on and quick instructions for use can be found here:
http://www.open-emr.org/wiki/index.php/Administration_Globals#Rx_NLM_Drug-Drug
The algorithm for collecting the rxcui list of the patient is here:
https://github.com/openemr/openemr/blob/43694fd3a580bf4425624737a54454a1e7923dd0/interface/weno/drug-drug.php#L36-L42
It basically converts drugs to rxcui numbers and then checks the interactions via online call to nih service. At this point, it basically does the following:
1. Uses drug title names in prescriptions, which are then converted to rxcui via the RXNORM database included within OpenEMR(note only searches for the first word of the prescription drug title if there are more than 1 words).
Recommend also adding the following to improve the capturing of the patient meds/drugs:
1. Check the medication drug titles (ie. following as is done above).
2. Use the rxnorm_drugcode sql column in the prescription table (this should be a rxcui code) if it exists.
3. Use the rxcui code that are included in the diagnosis column of the lists table for the medication items.
I will chime in here. The feature worked in the beginning but the company that provided the data. Stopped providing the limited data for free. So, the feature though it exist does not have a data source.
