You have not mentioned your Fathers Age.
Condition of Slipped Disc can be treated by an expert Homeopath.
You may have to carry out investigations like Vit D,, bone densuty, CBC etc
Slipped Disc being a complex condiition wouldnt advise you any over the counter medicines.
A proper consultation can help in choosing a correct remedy
Dr Geirge Joshy Varghese
MD(Hom)
Next Steps
contact an expert Homeopath nearby or get in touch with me.
Health Tips
Advise complete bed rest if in pain.
Avoid too many pain killers as it may harm his kidneys
no massages
Applying pain relief gels can be done locally for temperorary relief till he gets a proper evaluation and medication