4 month old teething remedies

La

My baby turns 4 months next and has started teething. I’m a new mom so I’m super new to this! My sis in law says NOT to use teething gels as they can numb the whole babies mouth. So she recommended Dr Talbots tablets which dissolve but they don’t seem to help much. My baby is too young to hold onto teething toys and he never took a pacifier. Should I give in and use a gel? I was thinking of trying the Zarbee’s one since it claims it’s natural.

Any advice?