Abstract:
Background: To recognize and comprehend how various medications can interact with one 
another when taken concurrently or quickly after one another is the goal of investigating drug
drug interactions. It's crucial to know this because drug interactions might harm the security 
and efficiency of the medications involved, possibly resulting in hazardous drug responses, 
unsuccessful treatment attempts, or other undesirable effects. Healthcare practitioners can take 
action to reduce the risk of patient injury and maximize the advantages of their prescription 
regimens by recognizing and analyzing potential drug interactions. Due to the increased rapid 
use of various drugs co-administration, either complementary or alternative medicine, the 
possibility of drug-drug interactions increased. This may cause severe organ damage or toxic 
effects in our bodies.  
Aims: To find potential interactions between proton pump inhibitors (PPIs) and multivitamins, 
researchers study the drug-drug interactions of these two drugs. Proton pump inhibitors 
function by lessening the quantity of acid produced in the stomach. They are frequently used 
to treat illnesses, including gastroesophageal reflux disease (GERD) and peptic ulcer disease. 
Multivitamins are designed to provide a convenient way for people to obtain the recommended 
daily intake of essential vitamins and minerals necessary for normal bodily functions. This type 
of research still needs to be observed based on the pharmacokinetics interactions between 
proton pump inhibitors and multivitamins in vivo and in vitro studies; the current research was 
carried out to investigate such potential interactions. Pantoprazole (PNT) and a vitamin B 
(VTB) complex were given to the participants in this trial. The vitamin B complex consisted 
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of VTB1, VTB6, and VTB12 in this investigation. This study aimed to determine the effect of 
the combination of these two drugs on the pharmacokinetics of pantoprazole (PNT). 
Methods: First, based on prescription analysis in the local area, considering government and 
private hospitals, age, and disease pattern. Based on the prescription survey, pantoprazole with 
vitamins B1, B6, and B12 were observed both in vitro and in vivo.  Pantoprazole and vitamin 
B complex were investigated in single and combined form under XRPD, DSC, and FT-IR. 
Further study validated all components under High Performance Liquid Chromatography 
(HPLC). Additionally, pharmacokinetics parameters were investigated in healthy volunteers 
after 0 hours, 0.5 hours, 1 hour, 2 hours, 3 hours, 5 hours, and 6 hours after administration. In 
this research, sensitive and effective procedures for simultaneous determination in human 
plasma using HPLC were developed in line with the bioanalytical standards established by the 
US Food and Drug Administration.  
Results: PPI and multivitamins were only included in 200 of the total 500 prescriptions. 
According to the findings of this study, those between the ages of 30 and 50 received the highest 
frequency of PPI and multivitamin prescriptions. According to the results of a prescription 
survey, PNT, VTB1, VTB6, and VTB12 should be investigated in both in vitro and in vivo 
studies to determine any possible drug interactions. The linearity of the PNT, VTB1, VTB6, 
and VTB12 validated parameters was evaluated, and the results showed that the plasma PNT, 
VTB1, VTB6, and VTB12 retention durations, throughout the range of 1–100 µg/mL, were 
6.8 0.2, 2.7 0.4, 4.50.5, and 3.8 0.1 min; respectively. This information was discovered 
when the linearity of these validated parameters was evaluated. For every analyte, the intra
assay and inter-assay biases were within 15% and 13.5%, respectively, for the lower limit of 
quantification and all other values. This study investigated the pharmacokinetic properties of 
PNT, VTB1, VTB6, and VTB12 when the medications were taken individually or combined 
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with other vitamins. We could not assess the pharmacokinetic profile of VTB12 in an in vivo 
trial despite an in vitro examination revealing that both interactions were minor. After 
analyzing the AUC curve, we found that the PNT, VTB1, and VTB6 single-dose concentrations 
were, respectively, 3.88 ± 1.239, 8.44 ± 0.514 and 62.91 ± 3.046 μg/mL*h. Following the 
combination, the AUC curves exhibited respective values of 3.56 ± 0.356, 7.90 ± 0.130 and 
56.52 ± 6.816 µg/mL*h. In every instance, the p-value indicated that the deal was less than 
0.99. When the PNT and VTB samples were evaluated in vitro in various physical 
combinations, there were scarcely any interactions between the two types of models. In the 
pharmacokinetics investigation, the administration of VTB did not significantly alter the 
pharmacokinetic parameters of PNT.  An approach to analyzing drug-drug interactions was 
devised as a result of the outcomes of the experimental investigation that was carried out. 
Investigations into bioequivalence and therapeutic medication monitoring are two possible 
applications for this approach.  
Conclusion: When PNT was administered with VTB1, VTB6, and VTB12, it showed no 
interactive properties and did not reduce any of their activity. It also maintained average AUC 
profiles, which may represent a stable Cmax and tmax both in single and combined form. Hence, 
this combination therapy may be a cost-effective, less toxic, and potential remedy for general 
uses.