Safety Profile of Vitamin D in Italy: An Analysis of Spontaneous Reports of Adverse Reactions Related to Drugs and Food Supplements.

Vitamin D (VitD) is largely used in Italy, often inappropriately; thus, an evaluation of its safety is a crucial issue. This study analyses the adverse reactions (ARs) associated with the use of products containing VitD (VitDps) reported to the Italian National Pharmacovigilance and Phytovigilance networks. From March 2002 to August 2022, a total of 643 and 127 reports concerning 903 and 215 ARs were retrieved from Pharmacovigilance and Phytovigilance networks, respectively. Overall, 332 (29.6%) ARs were classified as serious, and the most described ones were hypercalcaemia, renal failure and tachycardia. Serious AR risk was significantly higher for subjects using more than four concomitant products (OR 2.44 [95% CI 1.30-4.60]) and VitD doses higher than 1000 IU/day (OR 2.70 [95% CI 1.30-5.64]). In Italy, there was a modest decrease in AR reporting, despite the slightly increased use of VitD during the COVID-19 pandemic. To the best of our knowledge, this is the first study describing all VitDps-related ARs observed in the Italian general population. Since underreporting is the main limitation of the safety reporting systems, the necessity to continue ARs monitoring, also using real-world data on VitDps prescription, use and outcome patterns is highlighted.

Adverse events related to herbal dietary supplements and over-the-counter medications containing laxatives: a 10-year update from the Italian Phytovigilance and Pharmacovigilance systems.

INTRODUCTION: Products containing anthraquinones (AQ) are associated with an increased risk of serious adverse events (AEs). We performed an update of the available evidence retrieved by the spontaneous reports of AE associated with herbal dietary supplement (DS) and over-the-counter medications (OTC-M) used as laxatives. METHODS: Analysis and evaluation of AE reports retrieved from the Italian Phytovigilance and Pharmacovigilance systems was performed from February 2011 to December 2020. RESULTS: Totally 110 AE reports, 24 related to herbal DS and 86 to OTC-M, were analyzed. Most subjects were females. Herbal products analyzed mostly contained AQ derivatives. Most AEs were gastrointestinal (41.6%), central nervous system (18.2%), and dermatological disorders (12.6%). CONCLUSIONS: The number of AE reports recorded in the last 10 years is still relatively low. However, given the seriousness of some AEs, that does not represent a guarantee of safety. This study may contribute to enhance public awareness on the risks associated with misuse or abuse of laxatives.

Adverse reactions related to proton pump inhibitors in pediatric population: an analysis of spontaneous reporting data.

BACKGROUND: The use of proton pump inhibitors (PPIs) has increased in the last 10 years in children. Data regarding their safety profile are limited. The aim of this study was to analyze data from the Italian spontaneous reporting system (SRS) database to evaluate the incidence and characteristics of PPI-related adverse drug reactions (ADRs) in children. RESEARCH DESIGN AND METHODS: This was an observational, retrospective study analyzing PPI-related ADR reports in children in the Italian SRS database between January 1st, 2001, and December 31st, 2020. ADRs were coded according to the system organ class term level. Factors associated with ADR seriousness were investigated. RESULTS: Seventy spontaneous reports of ADRs related to PPIs were analyzed. Esomeprazole and lansoprazole caused the highest number of ADRs equally (27% respectively), and the most frequently reported ADRs presented with gastrointestinal (24%) and/or skin manifestations (21.3%). More than a half of PPI prescriptions were off label for pediatric population. Serious ADRs were 19 (27.1%). Serious ADRs were more frequent in reports presenting PPIs combined with other drugs in comparison to reports with PPI single therapies (p = 0.03). CONCLUSIONS: PPI-related ADRs in children are mostly not serious, and combination therapy seems to be associated with ADR seriousness.

Overview of the Safety of Anti-VEGF Drugs: Analysis of the Italian Spontaneous Reporting System.

INTRODUCTION: Anti-vascular endothelial growth factor (anti-VEGF) drugs are widely used for the treatment of several cancers and retinal diseases. The systemic use of anti-VEGF drugs has been associated with an increased risk of serious adverse reactions. Whether this risk is also related to intravitreal administration of anti-VEGF drugs is unclear. OBJECTIVE: The aim of this study was to provide an overview of the safety of anti-VEGF drugs in oncology and ophthalmology settings using the Italian Spontaneous Reporting System (SRS). METHODS: We selected all suspected adverse drug reaction (ADR) reports attributed to anti-VEGF drugs and conducted descriptive frequency analyses stratified by indication of use. As a measure of disproportionality, we calculated the proportional reporting ratio with 95% confidence intervals at the level of standardized Medical Dictionary for Regulatory Activities (MedDRA®) queries (SMQs). RESULTS: Of a total of 2472 anti-VEGF drug-related reports, 2173 (87.9%) and 299 (12.1%) were attributed to systemic and intravitreal use of these drugs, respectively. The frequency of serious ADRs reported was higher for intravitreal administration of anti-VEGF drugs than for systemic use in patients with cancer (58.9 vs. 34.1%) (p < 0.001) and were disproportionally associated with ischemic heart disease and thromboembolic and cerebrovascular events. Most serious ADRs related to anti-VEGF drugs in patients with cancer are known and clinically relevant (e.g., gastrointestinal and vascular disorders). CONCLUSIONS: This study documented that serious ADRs and systemic toxicity may occur not only with systemic use of anti-VEGF drugs in patients with cancer but also with intravitreal administration. Close monitoring of cardio/cerebrovascular adverse events should be considered during treatment with all anti-VEGF drugs.

Italian monitoring registries: a tool for a safer use of innovative drugs? Data from the national pharmacovigilance system.

OBJECTIVES: Our aim was to investigate the ADR reports of drugs with a monitoring registry (MR drugs), in particular those related to abuse/misuse, medication error, overdose, which might indicate an unsafe use. We compared these reports with those of similar drugs without a registry (non-MR drugs), thus verifying whether the registries could be useful tools for a safer use of innovative drugs. METHODS: All ADR reports included in the Italian Pharmacovigilance Network database from January 1st 2013 to December 31st 2015 (vaccines and literature cases excluded) were analysed. We compared the ADR reports of MR and non-MR drugs with the same ATC class at III level. RESULTS: The percentage of ADR reports with a completed 'Section 7' was significantly lower for MR compared to non-MR drugs (2.0 versus 6.2, p < 0.001). The difference concerned in particular the ADR reports related to abuse/misuse, medication errors and overdose. These reports, more strictly related to inappropriate use, were less frequent for MR drugs in all the considered ATC classes. CONCLUSIONS: Our study suggests that monitoring registries could be a useful tool for the reduction of frequency of ADRs related to inappropriate use, besides the control of pharmaceutical budget.

Bisphosphonate-related osteonecrosis of the jaw: an Italian post-marketing surveillance analysis.

OBJECTIVE: Although bisphosphonate (BP)-related osteonecrosis of the jaw (BRONJ) is well recognized, little is known about it in terms of pathophysiology, epidemiology or management. We analyzed all suspected BRONJ reports sent to the Italian Pharmacovigilance Adverse Event Spontaneous Reporting System (Rete Nazionale Farmacovigilanza [RNF]) to determine their pattern and add new information about this relevant issue. RESEARCH DESIGN AND METHODS: All suspected BRONJ sent to the RNF between 2003 and 2011 were retrieved. After a case-by-case assessment procedure, we analyzed BP type, BP exposure time and time since last use. RESULTS: Between 2003 and 2011, 555 reports of osteonecrosis of the jaw (ONJ) after BP administration were recorded in the RNF. These events occurred mostly in patients affected by cancer (77.84%) in which zoledronate was the most frequently suspected BP. Most patients experienced ONJ after long-term use of the drug (median time of BP exposure being between 1.3 and 8.8 years). Interestingly, 139 (25.05%) cases of ONJ occurred between 2 and 121 months after BP withdrawal. CONCLUSION: This study shows that BRONJ can occur much earlier than hitherto reported, adds new data on BRONJ onset following ibandronate treatment and reveals that patients who cease BP-based therapy develop ONJ, raising the question of post-treatment monitoring strategies.

Predictors of mortality in atypical antipsychotic-treated community-dwelling elderly patients with behavioural and psychological symptoms of dementia: a prospective population-based cohort study from Italy.

PURPOSE: To evaluate the effect of a broad range of covariates on the survival of a real-life long-term follow-up cohort of community-dwelling patients with behavioural and psychological symptoms of dementia who were new users of atypical antipsychotic medications (APMs). METHODS: This was a prospective cohort study of 1,618 subjects aged ≥65 years with dementia and BPSD ("behavioural and psychological symptoms of dementia") who were new users of atypical APMs and registered in a Dementia Evaluation Unit of Campania Region (Italy) from September 2006 to March 2010. The potential of baseline features to predict mortality was assessed with the Cox proportional hazards model. RESULTS: The average follow-up was 309 days. Of the 1,618 new users of atypical antipsychotics, 9.3 % experienced at least one adverse event, including death (5.1 %), drug therapeutic failure (3.0 %), extrapyramidal symptoms (0.5 %) and stroke (0.2 %). The crude all-cause mortality rate was 6.0 per 100 person-years [95 % confidence interval (CI) 4.8-7.4]; the rate was higher in patients aged >85 years (9.0 per 100 person-years, 95 % CI 6.4-12.7) and among male patients (7.5 per 100 person-years, 95% CI 5.3-10.6). In the multivariate analysis, only age was associated to all-cause mortality [hazard ratio (HR) 1.1; 95 % CI 1.0-1.1 and HR 1.4; 95 % CI: 0.9-2.2, respectively). In contrast, hallucination (HR 0.4; 95 % CI 0.2-0.6) and dosage change (HR 0.4; 95 % CI 0.2-0.78) were significantly associated with a lower risk of all-cause mortality. CONCLUSIONS: Among our patient cohort, the mortality rate of patients with BPSD receiving long-term treatment with atypical APMs was lower than that reported in other studies, and only age was found to be significant predictor factor of mortality.

Severe respiratory symptoms to oxaliplatin infusion: a case report of delayed hypersensitivity reaction.

A 46-year-old man with adenocarcinoma of the sigmoid colon developed a hypersensitivity reaction after the sixth cycle of combination chemotherapy with oxaliplatin infusion. Hypersensitivity to oxaliplatin occurring, after several courses of therapy, in about 10-15% of patients, especially during or immediately after the oxaliplatin infusion. In this case report we present a delayed hypersensitivity reaction, consisting in dysesthesia and laryngeal spasm developed 10 h after the sixth administration of oxaliplatin.