Hi, Terconazole is a medication used for treating vaginal yeast infections. It comes in different forms such as creams, suppositories, or vaginal tablets. When using terconazole, it is important to follow the instructions given by your healthcare provider, including the recommended method of insertion. Inserting terconazole too far may not be dangerous, but it can cause discomfort or irritation. It is recommended to insert the medication as far as it can comfortably go using the applicator provided. If you experience any discomfort, you should stop and try reinserting it more gently. If you are having difficulty inserting the medication as directed, it is important to contact your healthcare provider. They may be able to provide alternative methods or offer additional guidance. It is also important to note that if your symptoms do not improve after using terconazole, you should contact your healthcare provider as soon as possible. They may need to adjust your treatment or consider other possible causes of your symptoms. If you require a personalized response, kindly use the Ask A Doctor service and post a follow-up. Take care. Hope I have answered your question. Regards, Dr. Priyanka, General & Family Physician