Phytochemical investigation on Vitex negundo leaves and their anti-inflammatory and analgesic activities

Abstract The phytochemical investigation on Vitex negundo leaves has led to the isolation of one new iridoid glucoside (8α-hydroxy-4-carboxyl-5ßH-9ßH-iridoid-1α-O-(6'-O-(6,7-dihydrofoliamenthonyl)-ß-ᴅ-glucopyranoside, 3), together with three known compounds, namely agnuside (1), 6'-O-E-caffeoylmussaenosidic acid (2), and 3,5-dicaffeoylquinic acid (4). The HPLC analytical study was also performed to quantify the content of agnuside (1) in dried leaves. The results indicated the very high content of 1 (3.04 ± 0.02%). The method was also validated by various parameters, including linearity (R2= 0.9999), precision (intra-day RSD ≤ 2.50%, inter-day RSD= 0.76%), and accuracy (recovery rates 96.58-101.86%). The animal testing data showed that the extract did not reduce pain at the doses of 9.6 and 28.8 g /kg (leaf weight/body weight) in the hot plates and pain measuring models but showed the pain reduction in the acetic acid-induced pain model. The extract at the dose of 5.6 g/kg (leaf weight/body weight) also had effects on the acute inflammation in the carrageenin-induced edema model. The extract at the dose 9.6 and 28.8 g/kg (leaf weight/body weight) also showed significant chronic anti-inflammation, comparable to methylprednisolone at the dose 10 mg/kg on the mouse peritoneal

Analgesic, antipyretic, anti-inflammatory, and hepatoprotective activities of Pulicaria crispa (Forssk. ) Oliv. (Asteraceae)

Abstract Some plants of the genus Pulicaria have been used in traditional medicines for treating back pain and inflammation. They possess various bioactivities such as antipyretic, analgesic, and hepatoprotective. This study aimed to investigate the potential analgesic, antipyretic, anti- inflammatory, and hepatoprotective activities of Pulicaria crispa (P. crispa) extract (PCE). Analgesic activity was evaluated using the hot plate and acetic acid-induced writhing tests. Antipyretic and anti-inflammatory activities were evaluated using rectal temperature and carrageenan-induced hind paw edema methods, respectively. CCl4-intoxication was used for hepatoprotective activity. Also, liver histopathology was assessed. PCE, at 500 mg/kg, exhibited significant analgesic, antipyretic, and anti-inflammatory effects. The increased serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), gamma-glutamyl transferase (GGT), and bilirubin of CCl4-exposed rats reflects their liver injury. PCE significantly decreased the elevated liver markers. The hepatoprotective effect of PCE was confirmed, as it successfully reversed the altered levels of total protein, malondialdehyde (MDA), and non-protein sulfhydryls (NP-SH) in the liver tissues of CCl4-exposed rats. Histopathological studies confirmed the hepatoprotective nature of PCE. Pretreatment of rats with PCE reduced the severity of CCl4-induced liver damage. These findings concluded that PCE possesses analgesic, antipyretic, anti-inflammatory, and hepatoprotective activities.

The Therapeutic Potential of Cannabis in Counteracting Oxidative Stress and Inflammation.

Significant growth of interest in cannabis (Cannabis sativa L.), especially its natural anti-inflammatory and antioxidative properties, has been observed recently. This narrative review aimed to present the state of the art of research concerning the anti-inflammatory activity of all classes of cannabinoids published in the last five years. Multimodal properties of cannabinoids include their involvement in immunological processes, anti-inflammatory, and antioxidative effects. Cannabinoids and non-cannabinoid compounds of cannabis proved their anti-inflammatory effects in numerous animal models. The research in humans is missing, and the results are unconvincing. Although preclinical evidence suggests cannabinoids are of value in treating chronic inflammatory diseases, the clinical evidence is scarce, and further well-designed clinical trials are essential to determine the prospects for using cannabinoids in inflammatory conditions.

Common Analgesic Use for Menstrual Pain and Ovarian Cancer Risk.

Menstrual pain has been associated with increased ovarian cancer risk, presumably through increased inflammation, which is known to play a critical role in ovarian carcinogenesis. Analgesic medications are frequently used to treat menstrual pain, some of which lower ovarian cancer risk. In this study, we examined the association between analgesic use for menstrual pain during the premenopausal period and ovarian cancer risk among women with history of menstrual pain. We used data from the New England Case-Control Study, including 1,187 epithelial ovarian cancer cases and 1,225 population-based controls enrolled between 1998 and 2008 with detailed information on analgesic use for their menstrual pain. We used unconditional logistic regression to calculate the odds ratios (ORs) and 95% confidence intervals (CIs) for the association between analgesic use (i.e., aspirin, ibuprofen, acetaminophen) for menstrual pain and ovarian cancer risk. We further conducted a stratified analysis by intensity of menstrual pain (mild/moderate, severe). Among women with menstrual pain during their 20s and 30s, ever use of analgesics for menstrual pain was not significantly associated with ovarian cancer risk. However, among women with severe menstrual pain, ever use of aspirin or acetaminophen for menstrual pain was inversely associated with risk (OR, 0.41; 95% CI, 0.18-0.94 and OR, 0.43; 95% CI, 0.21-0.88 compared with never users, respectively). No significant association was observed between analgesic use and ovarian cancer risk among women with mild/moderate menstrual pain (P interaction ≤ 0.03). Our results suggest that use of aspirin or acetaminophen for severe menstrual pain may be associated with lower risk of ovarian cancer. PREVENTION RELEVANCE: This study investigates whether analgesic use specifically for menstrual pain during the premenopausal period influences ovarian cancer risk. Our results suggest use of aspirin or acetaminophen for severe menstrual pain may be associated with lower risk of ovarian cancer among women with severe menstrual pain.

Beyond Hot and Spicy: TRPV Channels and their Pharmacological Modulation.

Transient receptor potential vanilloid (TRPV) channels are part of the TRP channel superfamily and named after the first identified member TRPV1, that is sensitive to the vanillylamide capsaicin. Their overall structure is similar to the structure of voltage gated potassium channels (Kv) built up as homotetramers from subunits with six transmembrane helices (S1-S6). Six TRPV channel subtypes (TRPV1-6) are known, that can be subdivided into the thermoTRPV (TRPV1-4) and the Ca2+-selective TRPV channels (TRPV5, TRPV6). Contrary to Kv channels, TRPV channels are not primary voltage gated. All six channels have distinct properties and react to several endogenous ligands as well as different gating stimuli such as heat, pH, mechanical stress, or osmotic changes. Their physiological functions are highly diverse and subtype as well as tissue specific. In many tissues they serve as sensors for different pain stimuli (heat, pressure, pH) and contribute to the homeostasis of electrolytes, the maintenance of barrier functions and the development of macrophages. Due to their fundamental role in manifold physiological and pathophysiological processes, TRPV channels are promising targets for drug development. However, drugs targeting specific TRPV channels, that are suitable for drug therapy, are rare. Moreover, selective and potent compounds for further research at TRPV channels are often lacking. In this review different aspects of the structure, the different gating stimuli, the expression pattern, the physiological and pathophysiological roles as well as the modulating mechanisms of synthetic, natural and endogenous ligands are summarized.

From 'molecules of life' to new therapeutic approaches, an evolution marked by the advent of artificial intelligence: the cases of chronic pain and neuropathic disorders.

The large families of the molecules of life are at the origin of the discovery of new compounds with which to treat disease. The arrival of artificial intelligence (AI) has considerably modified the search for innovative bioactive drugs and their therapeutic applications. Conventional approaches at different organizational research levels have emerged and, thus, AI associated with gene and cell therapies could supplant conventional pharmacotherapy and facilitate the diagnosis of pathologies. Using the examples of chronic pain and neuropathic disorders, which affect a large number of patients, I illustrate here how AI could generate new therapeutic approaches, why some compounds are seen as recreational drugs and others as medicinal drugs, and why, in some countries, psychedelic drugs are considered as potential therapeutic drugs but not in others.

Multimodal Analgesic Plan for Children Undergoing Chimeric 14.18 Immunotherapy.

Immunotherapy with the chimeric 14.18 anti-GD2 antibody (ch14.18) is associated with severe neuropathic pain. Different analgesic modalities have been employed, but pain management remains challenging and side effects such as desaturation, bradycardia, and hypotension have been reported. We retrospectively analyzed the efficacy of a multimodal regimen based on gabapentin, ketamine, and morphine in controlling pain during ch14.18 chemotherapy. In our cohort, the pain was low, desaturation and hypotension were infrequent, and no episode of bradycardia was reported. Morphine consumption was similar to other studies. Our results suggest that this regimen may be a valid analgesic option in children undergoing ch14.18 infusion.

Identification of herbal categories active in pain disorder subtypes by machine learning help reveal novel molecular mechanisms of algesia.

Chronic pain is highly prevalent and poorly controlled, of which the accurate underlying mechanisms need be further elucidated. Herbal drugs have been widely used for controlling various pain disorders. The systematic integration of pain herbal data resources might be promising to help investigate the molecular mechanisms of pain phenotypes. Here, we integrated large-scale bibliographic literatures and well-established data sources to obtain high-quality pain relevant herbal data (i.e. 426 pain related herbs with their targets). We used machine learning method to identify three distinct herb categories with their specific indications of symptoms, targets and enriched pathways, which were characterized by the efficacy of treatment to the chronic cough related neuropathic pain, the reproduction and autoimmune related pain, and the cancer pain, respectively. We further detected the novel pathophysiological mechanisms of the pain subtypes by network medicine approach to evaluate the interactions between herb targets and the pain disease modules. This work increased the understanding of the underlying molecular mechanisms of pain subtypes that herbal drugs are participating and with the ultimate aim of developing novel personalized drugs for pain disorders.

Analysis of effectiveness and drug related problems of pain reliever for knee osteoarthritis: weighing clinical risk and benefit.

Background Osteoarthritis (OA) is a chronic degenerative joint disease, characterized by physiological disorders, such as cartilage degradation, bone remodeling, osteophyte formation, and joint inflammation, which results in pain. Several studies have reported problems with the use of pain medications in OA, such as the use of a combination of many drugs and their long-term use. Therefore, this study was designed to evaluate the use of pain medications in OA patients. The study focused on the analysis of effectiveness and drug related problems (DRPs) with the category of drug interactions and adverse drug events (ADEs) in knee OA patients in Orthopedic and Traumatology Clinic, Universitas Airlangga Teaching Hospital, Surabaya, Indonesia. Methods The study used a retrospective approach through tracking and recording of the medical data from the period of 1st January to 30th June, 2018. The potential of drug interactions was determined by analyzing data based on literature. The actual side effects of the drug were identified based on the patient's medical record through clinical data, laboratory data, and therapeutic data received by the patient. The study involved 143 subjects who met the inclusion criteria of 871 visits to the hospital. Results The results showed that women as much as 80.42% with an age distribution of at most 46-65 years are the most affected by OA cases. The predominant history of illness and comorbidities in OA patients was hypertension in 58.74% of patients. The use of analgesic meloxicam had a percentage of 26.06%, sodium diclofenac 20.21%, mefenamic acid 4.36% and paracetamol 4.25%. The effectiveness of the use of pain reliever was characterized by a decrease in VAS in each patient at the beginning and at the end of the study, where a decrease in pain intensity occurred in 79.72% of patients who received pain medications. Based on drug interactions, we were able to identify pharmacodynamic interactions of 43 events (4.94%) and onine events of pharmacokinetic interactions (1.03%), with a minor severity of 7 events (0.80%),44 moderate events (5.05%), and one major event (0.11%). Mostly identified side effects of the drugs were those due to the use of non-steroid anti inflammatory drugs, which occurred in 42 events (4.82%). Conclusions It can be concluded that OA therapy with a number of pain relievers shows an adequate therapeutic response with some side effects and interactions both pharmacokinetically and pharmacodynamically.

Revisión narrativa del dolor agudo poscraneotomía. Concepto y estrategias de prevención y tratamiento del dolor / Narrative review of acute post-craniotomy pain. Concept and strategies for prevention and treatment of pain

El objetivo de esta revisión narrativa es confirmar si el dolor agudo tras craneotomía es frecuente y presenta una intensidad entre moderada-severa. Además, pretende informar de la importancia de tratar no solo el dolor tras craneotomía, sino prevenirlo para disminuir la incidencia de la cronificación del dolor. Debemos conocer que entre las opciones actuales no solo disponemos de los analgésicos convencionales para el postoperatorio (antiinflamatorios no esteroideos, paracetamol, inhibidores de la ciclooxigenasa 2 y opiáceos). La realización de un bloqueo nervioso del cuero cabelludo previo a la incisión quirúrgica o tras la cirugía, el uso de dexmedetomidina intraoperatoria y la administración perioperatoria de pregabalina son alternativas que están ganando fuerza. El manejo del dolor poscraneotomía debe basarse, por tanto, en una analgesia multimodal durante todo el perioperatorio, enmarcándose dentro del concepto actual del protocolo enhaced recovery after surgery

The aim of this narrative review is to confirm that acute pain after craniotomy is frequent and presents with moderate to severe intensity. We also highlight the importance of not only treating post-craniotomy pain, but also of preventing it in order to reduce the incidence of chronic pain. Physicians should be aware that conventional postoperative analgesics (non-steroidal anti-inflammatory, paracetamol, cyclooxygenase inhibitors 2, opioids) are not the only options available. Performing a scalp block prior to surgical incision or after surgery, the use of intraoperative dexmedetomidine, and the perioperative administration of pregabalin are just some alternatives that are gaining ground. The management of post-craniotomy pain should be based on perioperative multimodal analgesia in the framework of an "enhaced recovery after surgery" (ERAS) approach

Drug-Induced Liver Injury in the Setting of Analgesic Use.

No professional society has created guidelines to aid clinicians in the management of analgesics in the setting of hepatic injury. Acetaminophen overdose is the most common cause of acute liver failure in the United States. In the setting of acetaminophen toxicity, N-acetylcysteine remains the standard of care. Other analgesics including nonsteroidal antiinflammatory drugs, opiates, tricyclic antidepressants, and anticonvulsants rarely cause liver injury.

Analgesic drug use in elderly persons: A population-based study in Southern Italy.

INTRODUCTION: Analgesics such as non-steroidal anti-inflammatory drugs (NSAIDs), weak and strong opioids are commonly used among elderly persons. The aim of this study was to describe the demographic and clinical characteristics of elderly analgesic users and to measure the frequency of analgesic use, including the frequency of potentially inappropriate analgesic use. METHODS: The Arianna database was used to carry out this study. This database contains prescription data with associated indication of use for 1,076,486 inhabitants registered with their general practitioners (GPs) in the Caserta Local Health Unit (Caserta district, Campania region in Italy). A cohort of persons aged ≥65 years old with >1 year of database history having at least one analgesic drug (NSAIDs, strong or weak opioids) between 2010 and 2014 were identified. The date of the first analgesic prescription in the study period was considered the index date (ID). RESULTS: From a source population of 1,076,486 persons, 116,486 elderly persons were identified. Of these, 94,820 elderly persons received at least one analgesic drug: 36.6% were incident NSAID users (N = 36,629), while 13.2% were incident weak opioid users (N = 12,485) and 8.1% were incident strong opioid users (N = 7,658). In terms of inappropriate analgesic use, 9.2% (N = 10,763) of all elderly users were prescribed ketorolac/indomethacin inappropriately, since these drugs should not be prescribed to elderly persons. Furthermore, at least half all elderly persons with chronic kidney disease or congestive heart failure were prescribed NSAIDs, while these drugs should be avoided. CONCLUSION: Analgesics are commonly used inappropriately among elderly persons, suggesting that prescribing practice in the catchment area may yet be improved.

Esteroides epidurales en el dolor radicular lumbar: particulados vs. no particulados. Esta es la cuestión / Epidural steroids in lumbar radicular pain: particulate vs. non-particulate. This is the question

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Top 10 cuestiones bioéticas en dolor / Top 10 bioethical issues in pain

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Analgesic use among the Brazilian population: Results from the National Survey on Access, Use and Promotion of Rational Use of Medicines (PNAUM).

PURPOSE: To estimate the prevalence of use of analgesics in Brazil; and to characterize this use, according to sociodemographic and health-related characteristics. METHODS: A cross-sectional population-based study (National Survey on Access, Use and Promotion of Rational Use of Medicines, PNAUM) was conducted between September 2013 and February 2014. A total of 41,433 people of all ages in Brazilian urban households were interviewed. Occasional use (within the last 15 days) and continuous use of non-opioid analgesics, opioid analgesics and non-steroidal anti-inflammatory drugs were investigated, regardless of whether this use occurred through prescription or self-medication. The main outcome was the use of at least one analgesic. RESULTS: The majority of the individuals were female (52.8%), aged between 20 and 59 years (57.2%), with 1 to 8 years of schooling (45.6%). The overall prevalence of analgesic use was 22.8% [95% CI: 21.4-24.2]. The use of analgesics was significantly higher among women, adults and elderly (20 years or more), highly educated individuals and respondents who referred: diagnosis of one or more chronic diseases, using three or more medications, possession of health insurance and with one or more emergency care admittances or hospitalizations within the last year. Non-opioid analgesics were the agents most used (18.5% of the sample), followed by non-steroidal anti-inflammatory drugs (6.9%) and opioid analgesics (0.5%). The most commonly used drugs were metamizole (37.8% of all analgesics), paracetamol (25.3%) and diclofenac (10.7%). These drugs were used mainly to manage occasional health conditions, particularly pain. CONCLUSION: One in five Brazilians used some analgesic, especially non-opioid analgesics, to manage acute health problems such as painful conditions.

Analysis on Composition Rules of Chinese Patent Drugs Treating Pain-Related Diseases Based on Data Mining Method.

OBJECTIVE: To analyze the composition rules of oral prescriptions in the treatment of headache, stomachache and dysmenorrhea recorded in National Standard for Chinese Patent Drugs (NSCPD) enacted by Ministry of Public Health of China and then make comparison between them to better understand pain treatment in different regions of human body. METHODS: Constructed NSCPD database had been constructed in 2014. Prescriptions treating the three pain-related diseases were searched and screened from the database. Then data mining method such as association rules analysis and complex system entropy method integrated in the data mining software Traditional Chinese Medicine Inheritance Support System (TCMISS) were applied to process the data. RESULTS: Top 25 drugs with high frequency in the treatment of each disease were selected, and 51, 33 and 22 core combinations treating headache, stomachache and dysmenorrhea respectively were mined out as well. CONCLUSIONS: The composition rules of the oral prescriptions for treating headache, stomachache and dysmenorrhea recorded in NSCPD has been summarized. Although there were similarities between them, formula varied according to different locations of pain. It can serve as an evidence and reference for clinical treatment and new drug development.

Analgesic Use in Dutch Patients With Osteoarthritis: Frequent But Low Doses.

OBJECTIVE: The aim of this study was to examine which analgesics are used by patients with osteoarthritis (OA)-related pain and how the analgesics are used in the preceding month. In addition, their beliefs about (pain) medication and the rationale of those declining to use analgesics were explored. METHODS: An online cross-sectional survey was sent to 1521 patients participating in the panel of the Dutch Arthritis Foundation. Descriptive analyses and logistic regression were used to analyze data. RESULTS: Of the 842 participants (56%) with OA that responded, 70% had generalized OA, 26% had concomitant fibromyalgia, and 34% had another musculoskeletal morbidity. Of all participants, 71% used analgesics, and 34% used more than 1 type. Analgesics were used for more than 14 days in the preceding month by most participants, with paracetamol being used most frequently (51%). Doses used were predominantly lower than the daily defined dose: 58.2% for paracetamol, 31.2% for nonsteroidal anti-inflammatory drugs/cyclooxygenase-2 inhibitors, and 75.7% for weak opioids. Compared with participants with concomitant fibromyalgia or other musculoskeletal morbidities, participants with OA alone significantly more frequently declined to use analgesics (p < 0.01) and significantly less frequently used 2 or 3 types of analgesics (p < 0.05). CONCLUSIONS: In this population with generalized OA and musculoskeletal comorbidities, medication use was high, and more than 1 type of analgesic was frequently used. Patients with concomitant fibromyalgia or other musculoskeletal morbidities more frequently used 2 or 3 types of analgesics; however, this use was often intermittent and in low doses. Medication use on a daily basis and at higher doses may lead to improved analgesic effect.

Pharmacological treatments of neuropathic pain: The latest recommendations.

We provide an up-to-date review of the pharmacological treatment of neuropathic pain with emphasis on the latest evidence-based recommendations for its pharmacological treatment. Drugs proposed as first line include tricyclic antidepressants (particularly amitriptyline), serotonin-norepinephrine reuptake inhibitors (particularly duloxetine), pregabalin and gabapentin. Second line treatments include lidocaine plasters and capsaicin high concentration patches for peripheral neuropathic pain only, and tramadol. Third line treatments include strong opioids and botulinum toxin A (for peripheral neuropathic pain). Perspectives include the development of new compounds and a more personalized therapeutic approach, which is made possible by recent progress in the assessment and understanding of neuropathic pain.

Manejo de analgésicos en ortodoncia / Analgesic management in orthodontics

Antecedentes: El dolor y el miedo al dolor durante el tratamiento odontológico son frecuentes tanto en la práctica general como en la especialidad de la ortodoncia. El dolor de variada intensidad se presenta en 94% de los pacientes durante el primer día del tratamiento ortodóncico y todavía al sexto día lo padece aproximadamente 50%. Sin embargo, en muchas ocasiones los pacientes no reciben una receta médica o medicamentos para el alivio del dolor y esto puede conducir a la automedicación. Objetivos: El propósito de este estudio fue determinar el manejo del dolor que el ortodoncista realiza durante el tratamiento dental. Material y métodos: Este estudio es de tipo transversal mediante una encuesta de respuesta inmediata a 51 odontólogos especialistas en ortodoncia egresados de diferentes universidades y en diferentes tiempos. Asimismo, fueron entrevistados 100 pacientes ortodóncicos portadores de brackets a quienes se les realizaron preguntas relacionadas con la percepción de dolor y el manejo farmacológico de éste durante la cementación de brackets, cambio del arco de alambre o activación de sus aparatos. Resultados: 35.3% (n = 18/51) de los ortodoncistas prescriben analgésicos de manera habitual, mientras que 64.7% (n = 33/51) no lo hacen y 29.4% (n = 15/51) los indican con horario fijo. El analgésico de elección fue el paracetamol (64.7%; n = 33/51). 51% (n = 26/51) de los ortodoncistas refieren que no emplean analgésicos porque no existe dolor durante el tratamiento dental, o si lo hay, es leve, transitorio y tolerable. 52% (n = 52/100) recibió la instrucción verbal de tomar analgésicos en caso de ser necesario, mientras que al resto no se le dio tal indicación. Del total de pacientes sólo 4% (n = 4/100) no percibió dolor durante el tratamiento, en tanto que el resto presentó dolor leve (19%), moderado (57%) y severo (20%). La frecuencia de días con dolor posterior a la cementación o activación de los brackets fue de 1-3 días (56%). El principal trastorno ocasionado por el tratamiento fue la alteración de la masticación, es decir, la incapacidad y/o dolor durante la masticación se presentó en 86%, y 42% se adaptó a la presencia de los brackets en su boca en un tiempo de entre dos a cuatro semanas. Conclusiones: La mayoría de los ortodoncistas encuestados afirman que el dolor producido por las fuerzas ortodóncicas es de baja intensidad y el paciente lo tolera muy bien, por lo que la administración de analgésicos es innecesaria y cuando tienen que recetar algún medicamento, el de su preferencia es el paracetamol; sin embargo, no lo recetan con dosis y horario fijo. La afirmación de parte de 51% de los ortodoncistas respecto a que el paciente no presenta dolor durante el tratamiento ortodóncico no se cumple, ya que se encontró que 77% de los pacientes presentaron dolor entre moderado y severo durante al menos 1-3 días posteriores a la cementación o activación de los aparatos (AU)

Background: Pain and fear of suffering during the orthodontic treatment, are still frequent in both general and specialty dental practice, including the orthodontics. The pain with different intensity, it is shown in the 94% of the patient, during the 1st day of the orthodontic treatment but still, during the 6th day, it appears to the 50% of the patients. Nevertheless, on many occasions, the patients do not receive any prescription or pain relief medication and this may lead to self-medication. Objectives: The purpose of this study was to determine the pain management that the orthodontist performs during dental treatment. Material and methods: This cross-sectional study was carried out by an immediate response survey to 51 orthodontic dentists graduated from different universities and at different times. We also interviewed 100 orthodontic patients who were asked questions related to their perception of pain and its pharmacological management during the activation of the devices. Results: 35.3% (n = 18/51) of orthodontists usually prescribe analgesics while the 64.7% (n = 33/51) they won't give any prescriptions; 29.4% (n = 15/51) indicating a specific time. The analgesic choice was paracetamol (64.7%; n = 33/51). 51% (n = 26/51) of the orthodontist they said that most of the time they won't give any prescription because there was no pain during the dental treatment, or in case that exists, they comment that is transitory or is a tolerated pain. The 52% (n = 52/100) they received the indication of taking analgesics in case they needed it, whereas the rest weren't receiving any indication. Of all patients only 4% (n = 4/100) did not feel pain during their treatment; meanwhile, the 19% felt a mild pain; 57% felt a moderate pain and 20% severe pain. The frequency with pain after the cementation or activation of the devices it is about 1 to 3 days (56%). The main disorder by the treatment was the chewing alteration (86%), and the 42% adapted to their braces in a time of 2-4 weeks. Conclusions: The majority of orthodontists enrolled, they had commented that the pain produced by the force of the braces is a low intensity and that the patient will tolerate without any problem, and because of that, there isn't a need to give them any prescription, and when there's a need the one of their preference is paracetamol, nevertheless they don't give the prescription with time and required doses. The affirmation from the 51% of the orthodontist about the patient that does not suffer any pain during their orthodontic treatment it's not according to the 77% who felt pain between moderate and severe during at least 1-3 days after the cementation or activation of devices (AU)