Thermogels are polymers to which we have not paid much attention in the past. In recent times, however, they have proven to be an excellent means of transporting medicines. One of the properties that excels thermogels is their responsiveness to external stimulus, so we can easily influence the sol-gel transition by changing the temperature. In this health-related field, science must be very careful to synthesize such thermogels that do not harm humans. In this area, we need to ensure that thermogels are biodegradable to ultimate non-harmful substances. Their use could be established in the future, as there are already such thermogels that are relatively affordable and have good properties for use.