Gums receeding can be caused due to various reasons such as traumatic toothbrushing, tartar accumulating , abnormal muscle pull , traumatic bite or gum disease. I recommend that you visit a Periodontist in the area that you recide and accordingly your treatment can be planned. There are no ointments or tablets that can stop/arrest gum recession. But elimination of the actual cause can help you.
Next Steps
visit a Periodontist as soon as possible
Health Tips
maintain good oral hygiene