Opioid abuse and mortality are ravaging American society, highlighting the need to find alternative effective analgesics with fewer side effects. FDA-approved topical analgesics, including non-steroidal anti-inflammatory drugs (NSAIDs), are commonly used to treat musculoskeletal pain but can cause adverse effects. Natural compounds, including essential oils, are potential therapeutic alternatives for managing musculoskeletal pain. If these compounds can provide comparable analgesia to FDA-approved products, it will increase the available options for people with pain, improving quality of life with minimal morbidity and mortality.
This study assesses the effectiveness and onset of action of Bonipar, a topical analgesic formulated with camphor, methyl salicylate, and oils of coconut, eucalyptus, nutmeg, and rosemary, in managing musculoskeletal pain compared to 1.5 % diclofenac solution, an FDA-approved topical non-steroidal anti-inflammatory drug.
One hundred sixty-four adult patients with localized musculoskeletal pain were randomly assigned to twice-daily applications of either Bonipar or Diclofenac for one week. The primary outcome measure was a 50 % reduction in pain after one week. Secondary outcomes included the change in pain from baseline and onset of action, defined as the first reduction in pain by 20 %.
All patients completed the initial pain assessment to determine the onset of action. One-week data was available for 74 patients treated with diclofenac and 72 patients treated with Bonipar. Data for 18 patients were incomplete. The proportion of patients achieving a 50 % reduction in pain was statistically similar between the two groups. The success rates of achieving a 50 % pain reduction with Bonipar were found to be non-inferior to those treated with diclofenac. All follow-up time points showed roughly similar results between the groups. Regression models adjusted for age and sex revealed no significant effects on pain changes. Secondary analyses demonstrated no significant differences between the groups.
The topical analgesic Bonipar demonstrates a comparable onset of action, with efficacy non-inferior to diclofenac in the management of musculoskeletal pain, while showing fewer adverse effects compared to diclofenac. These findings highlight the potential of Bonipar as a valuable alternative for the treatment of localized pain.
Cancer survivors with chronic pain experience pain relief with hypnosis and relaxation approaches; however, the effects of hypnosis and relaxation audio recording interventions on chronic pain have not yet been described from the perspective of the cancer survivor. The purpose of this study was to better understand cancer survivors’ experiences using hypnosis and relaxation interventions.
A randomized controlled trial with 109 cancer survivors experiencing chronic pain were assigned to the hypnosis (n = 55) or relaxation (n = 54) audio recordings. Participants listened to audio recordings daily for four weeks. A structured interview was conducted post-treatment to explore participants’ experience in using either the recorded hypnosis or relaxation intervention. Two reviewers independently conducted thematic analysis on all transcripts and then organized findings to identify salient themes.
Qualitative interviews were completed by 77 (71 %) of the participants. Cancer survivors who listened to either the hypnosis or relaxation audio recordings described similar effects of the interventions. Four major themes were identified: (1) pain relief, (2) control over pain, (3) improvement in other symptoms, and (4) positive experiences. Central to the participants’ experiences, the interventions gave them another tool to manage their pain.
The unique perspectives of cancer survivors with chronic pain add to our understanding of the effectiveness of hypnosis and relaxation audio recordings in the management of chronic pain. These interventions are described as having both physical and psychological benefits for cancer survivors.
Although acupuncture is widely used to treat ischemic stroke, its effects remain uncertain. This systematic review aims to synthesize current evidence on the effects of acupuncture for ischemic stroke and assess whether current randomized controlled trials (RCTs) have sufficient power to detect its effects.
Seven databases and two registry platforms were searched systematically from inception to June 13, 2023, to identify RCTs comparing the effects of acupuncture on ischemic stroke with control groups (placebo/blank). The Cochrane Risk of Bias 2 (RoB 2) tool was used to evaluate the risk of bias in the included trials. Random effects models through restricted maximum likelihood estimation were further used to estimate the pooled mean differences (MDs) and the corresponding 95 % confidence intervals (CIs). The primary outcome was neurological function (National Institutes of Health Stroke Scale, NIHSS), while secondary outcomes included global disability (modified Rankin Scale, mRS) and activities of daily living (ADLs) (Barthel Index, BI or Modified Barthel Index, MBI). The Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) system was used to evaluate the certainty of the evidence. Trial sequential analysis (TSA) was further applied to control random errors and calculate the required information size (RIS).
Forty RCTs involving 4485 patients were included. Acupuncture was found to significantly improve NIHSS (18 trials, 2658 patients; MD = −1.61, 95 % CI [-2.12, −1.09], low certainty evidence), mRS (3 trials, 298 patients; MD = −0.34, 95 % CI [-0.50, −0.19], moderate certainty evidence), and BI/MBI (26 trials, 2562 patients; MD = 8.98, 95 % CI [6.18, 11.77], low certainty evidence). Further, graphs of TSA indicated that the sample size of the trials was sufficient, and the results are robust.
Current evidence suggests that acupuncture can significantly improve neurological function, global disability, and ADLs in patients with ischemic stroke. The results were robust, as confirmed by TSA. However, the certainty of the evidence is moderate to low and should be further verified by more high-quality RCTs.