Medication use and pregnancy are likely to coexist since women constitute one-third of the global drug user population, and a large proportion of these women are of reproductive age (Mburu et al., 2020). Studies conducted in North and South America, Australia, and Europe have found that most pregnant women there take at least one medication (Engeland et al., 2018). Approximately 70% of pregnant women often use prescription drugs. These drugs treat acute and chronic diseases, as well as pregnancy-related conditions (Hudson et al., 2023). Moreover, pregnancy-related illnesses that require ongoing or intermittent treatment may also be one of the reasons for medication use (Navaro et al., 2018).

A study conducted in the US found that 95% of pregnant women utilize more than three over-the-counter (OTC) and prescription medications. Gastrointestinal or antiemetic agents followed by antibiotics were found to be most frequently used for nausea, vomiting, and urinary tract infections (UTIs) (Haas et al., 2018). A Kenyan study identified two main reasons for taking medications during pregnancy: managing unplanned pregnancy stress and treating withdrawal through the continuous use of drugs (Mburu et al., 2020). An Ethiopian study conducted in 2020 revealed the most frequently used medications during pregnancy, which included anti-anemics followed by analgesics and anti-infectives (Ayele et al., 2020). Moreover, a French study found that almost 90% of the included patients were using medications during their pregnancy (Bérard et al., 2019). In addition, a study in Norway found medication use during pregnancy in 60% of the participants (Engeland et al., 2018).

Further, the level of knowledge on the risk of using medications during pregnancy has been documented across different studies. In Italy, a study found that pregnant women belonging to a high socioeconomic status had a high level of knowledge on the risk of using medications during pregnancy (Navaro et al., 2018). In addition, in Nepal, the occupation of the women and their level of education was found to be significantly associated with the level of knowledge regarding their medication use (Devkota et al., 2017). In the UK, three out of ten pregnant avoided using medication during pregnancy due to their belief that medication was overused and not very beneficial in treating health conditions (Twigg et al., 2016). Furthermore, in Australia, a high health literacy was found to be strongly associated with participant’s skills of seeking more information on complementary medicine products from healthcare providers during pregnancy (Barnes et al., 2019).

A study conducted in Bangladesh clarified that pregnant women preferred herbal medicine due to its safety, accessibility, affordability, and efficiency as well as due to family tradition and discontentment with contemporary medicine (Ahmed et al., 2018). Pregnant women worldwide frequently use herbal products, such those containing ginger and garlic as well as herbal teas for common ailments (such as UTIs, colds, flu, nausea, and vomiting) (Illamol et al., 2020). Further, pregnancy necessitates a macronutrient-balanced diet—as protein requirements increase, particularly in the third trimester—thus promoting production while limiting significant fat consumption (Kocyłowski et al., 2018). Most pregnant women in the United States have been found to utilize at least one nutritional supplement at some point throughout their pregnancy. Pregnant women may utilize dietary supplements to improve their nutrient consumption because their intake of foods does not meet their actual needs. Increased caloric and nutrient intakes are required to support the physiological needs of the developing fetus and mother, particularly folate, iron, iodine, and copper. Thus, dietary supplements should be carefully planned. In addition, it has been found that pregnant women aged 20–34 years in their first trimester or from lower-income families were less likely to use supplements than their peers (Bailey et al., 2019; Jun et al., 2020).

Maternal immunization is a novel public health strategy that protects both the mother and her fetus or newborn from infections in the second or third trimester. Certain countries have implemented routine antenatal vaccinations, which are currently restricted to pertussis, tetanus, diphtheria, inactivated polio, and seasonal influenza vaccines (Sebghati and Khalil, 2021). Vaccinations against influenza, pertussis, and tetanus are strongly recommended for safe use during pregnancy. Among the others that are being developed are vaccines against the respiratory syncytial virus (RSV), group B Streptococcus (GBS), and cytomegalovirus (CMV) (Maertens et al., 2020).

In Saudi Arabia, medications use during pregnancy has been evaluated in several studies. A recent study conducted in Riyadh found that 76% of the participants reported using medications during their current pregnancy, while 86.3% used prescribed medications (Alyami et al., 2023). In addition, a study that included 760 participants found that almost 40% reported using medication during their pregnancy (Zaki et al., 2014). Despite health promotion campaigns, the level of medication utilization was scattered among different populations. The objectives of this study were to evaluate the patterns of prescription, OTC, and herbal medication use among pregnant women in Saudi Arabia.

The present study examined the pattern of using prescription and nonprescription medications as well as herbal products and supplements during pregnancy among women in the Qassim region in Saudi Arabia. The consumption of prescription medications in the short-term and the usage of nonprescription medications during pregnancy were found in almost 40% of the participants. In addition, the usage of prescription medications for chronic conditions and herbal medications during pregnancy were reported in almost 20% of the participants. In addition, almost all participants were found to be using pregnancy-related medications during their pregnancy. Further analysis revealed that women in their second and third trimesters were more likely to use prescription medications in the short term.

Further, we found that several classes of prescription medications were consumed in the short term during pregnancy; antibiotics were the most frequently utilized medications, followed by analgesics, and antacids. Studies conducted in Switzerland (Ger et al., 2021) and the Netherlands (De Waard et al., 2019) had similar findings. Moreover, the current study found that 4 out of 10 pregnant women used laxatives, compared to 8.7 out of 10 pregnant women in a study conducted in the Netherlands (de Waard et al., 2019). The variation could be attributed to a possibly lower prevalence of constipation within the current research sample. In contrast, the proportion of pregnant women using prescription medicines for chronic illnesses, such as hormone replacement therapy for hypothyroidism, antihypertensive medication for those with hypertension, and antidiabetic medication for those with diabetes were comparable to the proportions observed in research conducted in Norway (Engeland et al., 2018).

According to the findings of the current study, folic acid/iron supplements, and calcium supplements are the most frequently used pregnancy-related medications. These findings are in accordance with a study conducted in Northwest China (Liu et al., 2019), which reported that a higher percentage (>50%) of participants used folic acid and calcium during pregnancy while only 5.4% reported using iron. This similarity may stem from the higher prevalence of higher education among these samples; this emphasizes the participants’ understanding of the need for supplement consumption during pregnancy. Further, the findings of the current study revealed that analgesics were the most frequently utilized nonprescription medications, which is also what was found in another study conducted in Riyadh, Saudi Arabia (Alyami et al., 2023). Most of the participants complained of headaches and fever, leading to the frequent utilization of analgesics. Conversely, in the current study cough/cold medications and antiemetics were much lower than that reported in the Riyadh study (Alyami et al., 2023). This variation could be due to the lower proportion of pregnant women with nausea, cough, or colds in the current research sample. In addition, this study found that a few pregnant women utilized herbal medications—such as those containing ginger, anise, and cumin—to treat certain problems. The findings of this study were comparable to studies conducted in Bangladesh and the United States (Ahmed et al., 2018; Illamol et al., 2020). During the interviews, participants stated that they utilized herbal medication throughout their pregnancy because they believed they were safer than mainstream medicines and are more easily accessible.

The present study also indicated that pregnant women in their second and third trimesters were more likely to use prescription medications in the short term, with antibiotics being the most prescribed medications (62%). This result is in accordance with a multinational study conducted across Europe (Western, Northern, and Eastern), North and South America, and Australia which found that 68% of 9,459 patients used at least one short-term medication during their pregnancy (Lupattelli et al., 2014). This result differs from research conducted in the Netherlands (de Waard et al., 2019), where antibiotics use was noticed in almost 35% of the population. This might be due to restricted antibiotic prescribing in the Netherlands compared to Saudi Arabia. In contrast, pregnant women with more than two previous births were less likely to use prescription medication in the short term during their pregnancy. This result was different from that of a multinational study in Europe, which revealed that women who had previously given birth were more likely to use medication in the short term during their current pregnancy (Lupattelli et al., 2014).

This study has several limitations that should be considered. First, its cross-sectional design captures medication use at a single point in time, which is subject to recall bias and does not allow for monitoring changes in medication patterns throughout the course of a pregnancy. Second, the use of a convenience sample from a single hospital in Buraydah limits the generalizability of the findings to other regions in Saudi Arabia or different healthcare settings, as such samples are vulnerable to various forms of bias (selection, volunteering, and Contextual Bias). Third, the data was collected via self-report questionnaires, which may be influenced by social desirability bias and could not be validated against official medical or pharmacy records. Finally, while the study identified classes of medications, it did not analyze specific drug names, dosages, or the precise timing of use, which are critical for a detailed risk assessment. Additionally, the study did not capture the source of the medication recommendation (e.g., physician, pharmacist, or self-medication), which limits our ability to assess the specific influence of professional pharmacy advice versus lay recommendations.

Despite these limitations, this study’s findings have important implications for clinical practice and public health. First, the safety implications of the observed medication patterns are significant. The high rate of antibiotic use (62.1% of short-term prescriptions) raises concerns regarding antimicrobial resistance (AMR), which may alter the maternal and neonatal microbiome, potentially impacting long-term infant immunity (González-Pérez et al., 2016). Furthermore, the widespread use of OTC analgesics (50% of OTC users) warrants specific caution regarding teratogenicity and fetal safety. While acetaminophen is generally considered safe, the inadvertent use of nonsteroidal anti-inflammatory drugs (NSAIDs) during the third trimester is associated with risks, such as premature closure of the fetal ductus arteriosus and oligohydramnios (Koren et al., 2006). Finally, the use of herbal products containing anise (27.6%) and cumin (18.4%) presents a safety paradox. While users perceive these as safe and natural, robust clinical data establishing their safety profiles and teratogenic risks in medicinal dosages are largely absent. This uncertainty necessitates caution and highlights the urgent need for evidence-based education regarding the unsupervised use of “natural” products (Bernstein et al., 2020).

Consequently, strict adherence to global safety guidelines is necessary to mitigate these risks. Our findings revealed that antibiotics were the most frequently used prescription medication for short-term conditions, primarily for UTIs. This aligns with ACOG guidelines, which emphasize that while antibiotic stewardship is crucial, untreated bacteriuria in pregnancy carries significant risks, such as pyelonephritis and preterm birth, thereby necessitating appropriate treatment (ACOG, 2023). However, the widespread use of antibiotics also emphasizes the need for enhanced pharmacovigilance to monitor prescribing patterns and enforce the Saudi Ministry of Health’s National Action Plan on Antimicrobial Resistance, which is in line with WHO recommendations for rational drug use during pregnancy (Zanichelli et al., 2023; Sheerah et al., 2025). With regard to herbal remedies, our study found that ginger was most commonly (44.7%) used primarily for nausea. This practice is supported by ACOG Practice Bulletin No. 189 on nausea and vomiting in pregnancy, which considers ginger a reasonable nonpharmacological option for mild symptoms (ACOG Practice Bulletin No. 189, 2018). Conversely, the near-universal use of folic acid (98.3%) and iron (92.0%) in our cohort reflects strong adherence to Saudi Ministry of Health antenatal protocols and WHO antenatal care guidelines (Tunçalp et al., 2017; Alsolami et al., 2024).

From a pharmacovigilance perspective, the concurrent use of prescription drugs, OTC medications (reported by 36.9% of participants), and herbal products highlights a complex safety profile that requires active management. Therefore, healthcare providers, particularly clinical pharmacists, must act as the primary checkpoint for medication safety. Implementing routine medication reconciliation processes during antenatal visits is essential to identify potential drug–herb interactions and ensure that all therapeutic interventions—whether prescribed or self-administered—adhere to the safety standards outlined by WHO and ACOG (Cheema et al., 2018). To operationalize this, we propose implementing active pharmacist-led verification, such as “brown bag” reviews, to comprehensively assess all patient-consumed products (Dunston et al., 2025). Furthermore, targeted prenatal education modules are needed to address specific knowledge gaps regarding herbal safety and trimester-specific NSAID avoidance.

Future research should aim to overcome the limitations of this study. Prospective, multicenter cohort studies across different regions of Saudi Arabia are needed to provide a more dynamic and representative picture of medication use. Such studies should validate self-reported data against medical and prescription records to ensure accuracy. Furthermore, qualitative research could provide valuable insights into the beliefs and attitudes that drive medication choices among pregnant women, particularly regarding herbal remedies. Finally, linking medication exposure data to maternal and neonatal health outcomes would be invaluable for establishing the safety profiles of the most commonly used medications in this population.

This study’s findings highlight that a considerable number of pregnant women use a variety of medications during their pregnancy. The medications that were most frequently used for acute/short-term illnesses were antibiotics, while the ones for chronic/long-term conditions were those used for hormonal replacement therapy. During pregnancy, common OTC medications, and herbal remedies, such as analgesics and antacids, were frequently utilized. Additionally, pregnant women were found to commonly take additional supplements such as folic acid as well as various vitamins and minerals. The common reasons for using medications during pregnancy were UTI, hypothyroidism, headaches, and nausea.