Official documents, adverse reaction reporting, and safety monitoring
Report a side effect
Submit a Yellow Card report to the MHRA
Safety monitoring data
Yellow Card reports
The MHRA Yellow Card scheme collects reports of suspected side effects from healthcare professionals and patients. View the Drug Analysis Profile (iDAP) for real-world adverse reaction data.
View Drug Analysis Profile
Browse all Drug Analysis Profiles A–Z
Browse all iDAP reports
Interactive Drug Analysis Profiles for all medicines
Report a side effect
Submit a Yellow Card report to the MHRA
Data from the MHRA Yellow Card scheme. A reported reaction does not necessarily mean the medicine caused it. Contains public sector information licensed under the Open Government Licence v3.0.
EudraVigilance
The European Medicines Agency (EMA) collects suspected adverse reaction reports from across the EU/EEA through the EudraVigilance system. Search for safety data on this medicine.
Search EudraVigilance database
Browse substances A–Z in the European adverse reaction database
About EudraVigilance
Learn about EU pharmacovigilance and safety monitoring
EudraVigilance data is published by the European Medicines Agency (EMA). A suspected adverse reaction is not necessarily caused by the medicine.
1 branded products available
Therapeutically similar medicines
Similarity is based on WHO Anatomical Therapeutic Chemical (ATC) classification and on a factual NHS dm+d therapeutic-grouping code prefix. Source data: NHS dm+d via TRUD (OGL v3.0), WHO ATC/DDD Index.
NHS prescribing volume and spending trends
Check stock at pharmacies and supply information
Pharmacy stock checkers
Search for this medicine at major UK pharmacy chains. These links open the retailer's own website — results depend on their current online catalogue.
Supply & safety information
Official UK regulator monitoring and safety alerts
Pharmacy links redirect to the retailer's own search and do not represent real-time stock levels. Shortage and safety information sourced from MHRA drug safety updates (gov.uk, Crown Copyright under OGL v3.0).
Codes for healthcare professionals and prescribing systems
These codes are used by healthcare IT systems and prescribers to identify this medicine.
NHS UK identifiers
SNOMED CT and dm+d codes from NHS TRUD (Technology Reference data Update Distribution), licensed under the Open Government Licence v3.0. BNF code shown is the factual mapping value distributed by NHS Business Services Authority (NHSBSA) in the dm+d supplementary file under OGL v3.0; it is not affiliated with, nor licensed from, the publishers of the British National Formulary.
Active and completed clinical studies from ClinicalTrials.gov
Source: ClinicalTrials.gov, a database of the U.S. National Library of Medicine (NLM), National Institutes of Health (NIH). Data accessed via ClinicalTrials.gov API v2. Trial information is provided for research purposes and does not constitute medical advice.
Academic studies and reviews for this medicine's active substance
Showing all 26 studies.
Randomised trials: 1 · 2003–2026
Showing all 26 studies, sorted by most relevant.
Keller D, Sundrum A
2018
- Anti-Bacterial Agents
- Cattle
- Homeopathy
Based on the widespread use of homeopathy in dairy farm practice when treating mastitis, a blind randomised controlled trial (RCT) was conducted to assess the effectiveness of homeopathic treatment of clinical mastitis on four dairy farms. The study considered specific guidelines for RCTs as well as the basic principles of individualised homeopathy and involved 180 lactating dairy cows. Evaluation of cure rates was based on clinical investigation of the udder and on laboratory analysis of milk samples. In culture‐positive cases, the antibiotic treatment provided suboptimal bacteriological cures (60–81 per cent) but was more effective than individualised homeopathy (33–43 per cent) whose effects appeared little different to those of placebos (45–47 per cent) (P≤0.05). On the cytological cure level, all three treatment methods were similarly ineffective: antibiotic being 2–21 per cent, individualised homeopathy 0–8 per cent and placebo 3–13 per cent (P≤0.05; P=0.13). Antibiotics, individualised homeopathy and placebo had similar effects on bacteriological and cytological cure in cases of culture‐negative milk samples (P>0.4) and Escherichia coli infections (P=1.0). The study results implied that the effectiveness of individualised homeopathy does not go beyond a placebo effect and successful treatment is highly dependent on the specific mastitis pathogen. Thus, antimicrobial or alternative remedies used should be based on the bacterial culture of the milk sample. Trial registration number NTP‐ID: 00008011‐1‐9, Pre‐results.
Abstract licence: CC BY-NC
Carlos A. Cañas, Santiago Castaño-Valencia, Fernando Castro-Herrera
Toxicon, 2023
- Crotalid Venoms
- Viperidae
- Crotalinae
N. Galizio, Laura S Moraes-Santos, Ana C. Yabunaka, et al.
Toxicon : official journal of the International Society on Toxinology, 2024
- Crotalinae
- Venomous Snakes
- Antivenins
Pracjek P, Gray AC, Doherty R, et al.
2024
- COVID-19
- Homeopathy
- Surveys and Questionnaires
Abstract Background More than 670 million people have been infected by COVID-19. This case series reports 8 of 55 cases in a broader study of COVID-positive clients who sought homeopathic care for symptoms. Existing studies of homeopathy and COVID-19 have sometimes failed to employ the underpinning theoretical framework of homeopathy—the genus epidemicus. Special focus has been placed on standout symptoms not often reported in conventional medical outlets, known among homeopaths as “strange, rare and peculiar” (SRP) symptoms. The Homeopathy Help Network (HHN) team of practitioners noted SRP symptoms across dozens of cases and studied how they shifted collectively as different variants of the virus emerged. Methods COVID-positive individuals self-selected for individualized care for their symptoms using homeopathy. They received tele-health consultations and individualized homeopathy interventions in an out-patient homeopathy clinical setting. Clients were seen by individual professional homeopathy practitioners and students under supervision working at the HHN in the United States. Cases for the series were hand-picked with the aim of being an average representation of the more than 4,000 COVID-positive cases seen by members of the HHN. Cases in the full compendium are grouped according to a predominant case feature: Multiple remedies, Posology, Time ill, Single remedy resolution, Hospitalization and, in this case series, SRP symptoms. Results SRP symptoms included: continually on the verge of unconsciousness; dark green stools; very low pulse alternating with tachycardia; sensation of strong or burning chemical smells; sensation of inhaling water through the nose; recurring electric shock sensations in head or extremities; yellow-green stools. Conclusion Collective SRP symptoms from the pandemic provided the opportunity to study the hallmark features of COVID-19 in depth. The importance of these symptoms highlights the applicability of Hahnemannian principles and good case-taking practices.
Abstract licence: CC BY-NC-ND
G. D. Pilon, Anna P. Farias-de-França, Nathalia M Cantuária, et al.
BioMed Research International, 2024
- Plant Extracts
- Crotalinae
- Venomous Snakes
Envenomations by snakes represent a neglected health problem in tropical and subtropical countries. In South America, Lachesis muta occasionally causes severe human envenomation, with treatment being conditioned to an unspecific antivenom. In this work, we examined the neutralizing ability of Coutarea hexandra stem bark hydroalcoholic extract ( Ch ‐E), including the commercial phytochemicals coumarin and quinine, on the neuromuscular blockade induced by L. m. muta venom in mouse phrenic nerve‐diaphragm preparation. Biological assays were performed following conventional myographic technique ex vivo. Ch ‐E was phytochemically characterized to detect the presence of coumarin and quinine using analytical methods. Ch ‐E and commercial phytochemicals were tested separately or combined under pre‐ and post‐venom incubation protocols. Ch ‐E attenuated the venom‐induced neuromuscular blockade only under the pre‐venom incubation protocol. Quinine was not detected in Ch ‐E. Commercial coumarin and quinine exhibited a concentration‐dependent counteracting effect on the venom‐induced neuromuscular blockade. The pre‐venom incubation protocol showed to be efficient in attenuating the L. m. muta venom–induced neuromuscular blockade, most likely due to the presence of coumarin derivatives and unknown alkaloids in this extract.
Abstract licence: CC BY
Valéria Gonçalves de Alvarenga, L. Oliveira, G. O. Santos, et al.
Toxicon : official journal of the International Society on Toxinology, 2023
- Platelet Aggregation
- von Willebrand Factor
- Crotalinae
G.F. Santos, D.A.N. Moreno, I. Ravazoli, et al.
ARACÊ, 2025
Mirtha Marieta, Yarlequé Chocas, Actividad Antiinflamatoria, et al.
Revista peruana de medicina experimental y salud publica, 2023
- Crotalid Venoms
- Plantago
- Viperidae
OBJECTIVE.: To evaluate the in vitro inhibitory activity of Plantago major "llantén" and Piper aduncum "matico" extracts on phospholipase A2 (PLA2) from the venom of the snake Lachesis muta muta. MATERIALS AND METHODS.: We carried out an explanatory study with experimental design. Leaves of P. major and P. aduncum were collected in the province of Huarochirí in Lima, Peru. Then, we prepared alcoholic extracts diluted in distilled water and conducted phytochemical assays, quantification of phenols and flavonoids, thin layer chromatography (TLC) on cellulose and enzymatic activity with PLA2. The ability to inhibit PLA2 with the extracts under study and their fractions was analyzed. The Kruskal Wallis test and Bonferroni multiple comparisons were used during statistical analysis. RESULTS.: Phenols, flavonoids and tannins were qualitatively identified in both P. major and P. aduncum; in addition, P. aduncum presented saponins. The inhibition of PLA2 activity of the venom by the total extract of P. major was 45.3%, and its fractions showed the following inhibition values: 31.1% for LLF-1, 66.3% for LLF-2 and 65.5% for LLF-3. The inhibition values for the total extract of P. aduncum were 86.9%, and its fractions showed the following inhibition rates: 34.3% for MF-1, 67.1% for MF-2 and 54.9% for MF-3. Statistical analysis showed significant differences in the inhibition of PLA2 (p=0.009) by the extracts. CONCLUSION.: The tests demonstrated an association between the anti-inflammatory effect of the extracts and PLA2 inhibition.
Abstract licence: CC BY-NC
S. Hosseinian, Mitra Ghaziani, Fateme Mirzajani, et al.
International Journal of High Dilution Research - ISSN 1982-6206, 2025
Introduction Homeopathic remedies in ultra-high dilutions (UHDs) have been used for centuries due to their proven therapeutic and biological effects [1-2]. Structural research on UHDs suggests the presence of essential original matters (EOMs) with unique formations [3]. However, a key research gap remains: Can the individualization of EOMs enhance homeopathic treatment? Can their structural characteristics be linked to therapeutic and biological effects? This study confirms the presence of EOMs in UHDs derived from blood samples, exhibiting distinct features. Objectives To analyze the structural properties of EOMs in patient blood samples before homeopathic treatment and compare them with EOMs of prescribed remedies. This study aims to identify correlations that could enable individualized remedy selection. Methodologies Blood samples were collected from four patients diagnosed with specific homeopathic constitutions (Lachesis muta, Calcarea carbonica, Ignatia amara, Staphysagria) before treatment. UHDs of each sample were prepared using standardized dilution and succussion protocols in ultrapure water. EOMs in the final solutions were analyzed via scanning electron microscopy and compared with a reference library of 100 known UHDs, including prescribed remedies. Results SEM analysis revealed distinctive filamentous or elongated structures with variations in curvature, surface texture, and integrity. A remarkable structural similarity was observed and quantified via AI image processing between patient blood UHDs and corresponding homeopathic remedies. These findings provide the first evidence that EOMs are present in UHDs of blood and exhibit unique characteristics, suggesting a potential link between UHD structures and patient-specific biological activity. Conclusion The results indicate that UHDs possess specific structural properties that may contribute to their function. The resemblance between patient-specific UHDs and prescribed homeopathic remedies highlights a potential mechanism for remedy selection. This approach could serve as a diagnostic tool for personalized homeopathic therapy while minimizing human error. Further research is necessary to validate these findings and explore clinical implications.
Abstract licence: CC BY-NC-SA
Camila Castro-Pinheiro, E. F. Sanchez, Corinna Dwan, et al.
Journal of Applied Phycology, 2026
Abstract Snakebite envenomation is a neglected tropical disease and incidents of the pit viper Lachesis muta cause hemorrhage, muscle damage, blood coagulation disturbances, and even death; the proteases and phospholipase A 2 (PLA 2 ) of snake venoms contribute to such toxic effects. This work evaluated the inhibitory effect of commercial fucoidans from two species of brown seaweeds Fucus vesiculosus (FVF) and Undaria pinnatifida (UPF) against the coagulant and PLA 2 activity of Lachesis muta venom and two purified enzymes, a thrombin-like enzyme and PLA 2 , denoted TLE–1 and LM-PLA 2 –I, respectively. Fucus vesiculosus and U. pinnatifida fucoidans were incubated with L. muta venom and enzymes for 5 min at 37 °C, followed by assays, including the plasma and fibrinogen coagulation, hydrolysis of the substrates of proteases (S–2238 and S–2288), and hydrolysis of the substrate of PLA 2 enzymes, NBD-PC. Fucus vesiculosus and U. pinnatifida fucoidans inhibited the plasma coagulation of L. muta venom, but not the coagulation of TLE–1. However, both fucoidans fully prevented the coagulation of fibrinogen caused by L. muta venom and TLE–1. Fucus vesiculosus and U. pinnatifida fucoidans inhibited 60% and 40% hydrolysis of S–2238 of L. muta venom and TLE–1, respectively. Using the substrate S–2288, the fucoidans did not affect the hydrolysis of L. muta venom and inhibited 40% of hydrolysis caused by TLE–1. Fucus vesiculosus and U. pinnatifida fucoidans inhibited 40% and 20% of the PLA 2 activity of L. muta venom and LM-PLA 2 –I, respectively. These two fucoidans should be investigated as complementary or potential adjuvants for SBE inflicted by L. muta venom in more detail.
Abstract licence: CC BY
Sources: aggregated from Europe PMC (EMBL-EBI), OpenAlex, Crossref, PubMed and other open scholarly databases. Retracted articles are excluded. Study information is provided for research purposes and does not constitute medical advice.
Scientific data (pharmacology, interactions, ADME) is not yet available for this medicine. Clinical sections are sourced from the NHS dm+d database.