diff --git a/Polyclinic/PolyclinicBusinessLogic/BusinessLogics/MedicamentLogic.cs b/Polyclinic/PolyclinicBusinessLogic/BusinessLogics/MedicamentLogic.cs
index 175fed3..116abc8 100644
--- a/Polyclinic/PolyclinicBusinessLogic/BusinessLogics/MedicamentLogic.cs
+++ b/Polyclinic/PolyclinicBusinessLogic/BusinessLogics/MedicamentLogic.cs
@@ -1,35 +1,124 @@
-using PolyclinicContracts.BindingModels;
+using Microsoft.Extensions.Logging;
+using PolyclinicContracts.BindingModels;
 using PolyclinicContracts.BusinessLogicsContracts;
 using PolyclinicContracts.SearchModels;
+using PolyclinicContracts.StoragesContracts;
 using PolyclinicContracts.ViewModels;
 
 namespace PolyclinicBusinessLogic.BusinessLogics
 {
     public class MedicamentLogic : IMedicamentLogic
     {
+        private readonly ILogger logger;
+        private readonly IMedicamentStorage medicamentStorage;
+
+        public MedicamentLogic(ILogger<MedicamentLogic> logger, IMedicamentStorage medicamentStorage)
+        {
+            this.logger = logger;
+            this.medicamentStorage = medicamentStorage;
+        }
         public bool Create(MedicamentBindingModel model)
         {
-            throw new NotImplementedException();
+            CheckModel(model);
+            if(medicamentStorage.Insert(model) == null)
+            {
+                logger.LogWarning("Create operation failed");
+                return false;
+            }
+            return true;
         }
 
         public bool Delete(MedicamentBindingModel model)
         {
-            throw new NotImplementedException();
+            CheckModel(model, false);
+            if (medicamentStorage.Delete(model) == null)
+            {
+                logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            logger.LogInformation("Delete. Id:{Id}", model.Id);
+            return true;
         }
 
         public MedicamentViewModel? ReadElement(MedicamentSearchModel model)
         {
-            throw new NotImplementedException();
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            logger.LogInformation("ReadElement. MedicamentName:{Name}.Id:{ Id}", model.Name, model.Id);
+            var element = medicamentStorage.GetElement(model);
+            if (element == null)
+            {
+                logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+            return element;
         }
 
         public List<MedicamentViewModel>? ReadList(MedicamentSearchModel? model)
         {
-            throw new NotImplementedException();
+            logger.LogInformation("ReadList. Name:{Name}. Id:{ Id}", model?.Name, model?.Id);
+            var list = model == null ? medicamentStorage.GetFullList() : medicamentStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
         }
 
         public bool Update(MedicamentBindingModel model)
         {
-            throw new NotImplementedException();
+            CheckModel(model);
+            if (medicamentStorage.Update(model) == null)
+            {
+                logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(MedicamentBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (model.SymptomId <= 0)
+            {
+                throw new ArgumentNullException("Какой-то неправильный идентификатор симптома...", nameof(model));
+            }
+            if (model.ProcedureId <= 0)
+            {
+                throw new ArgumentNullException("Какой-то неправильный идентификатор процедуры...", nameof(model));
+            }
+            if (string.IsNullOrEmpty(model.Comment))
+            {
+                throw new ArgumentNullException("Нет комментария", nameof(model.Comment));
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentNullException("Нет названия у препарата", nameof(model.Comment));
+            }
+
+            var element = medicamentStorage.GetElement(new MedicamentSearchModel
+            {
+                Name = model.Name
+            });
+
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Препарат с таким названием уже есть");
+            }
+
+            logger.LogInformation("Medicament. Comment:{Comment}. Id: { Id}", model.Comment, model.Id);
         }
     }
 }