How long does it stay in your body after you inject with Diprophos?

Hello
Due to a change of doctor, who prescribed me an injection of Diprophos more than a year after the first one, I had to have the injection done by another doctor, because the first one after sending me to buy the product, found himself closed and inaccessible when I had just consulted him!! Consequently, after being able to make a photocopy of the prescription by mobile phone, I was able to have the injection done by another doctor a few days later. The first injection, as far as I remember, had been rather very effective for an old paresthesia of the feet, one of which had been injured (ankle broken and put back without limping more than ten years earlier) but not treated by successive doctors, edema included; Can regular treatment of this drug, at least once a year, or rather every three to four months, give hope for a significant improvement in this paresthesia which has probably become chronic, neglected and causes me serious numbness, tingling and cramps especially in the injured leg and ankle, (I am over 70 years old) was still quite valid, But this is decreasing because of the lack of care and botched if not 'psychological' physiotherapy? Can an injection every 3 or 4 statistically improve the situation and an analgesic temporarily prescribed in hospital for pneumonia, Cataflam 50mg is contraindicated or compatible, since I no longer have a general practitioner (great shortage of general practitioners in Belgium too). Incidentally I have to take Ferrodyn and vit. B12, because of these vitamin deficiencies (no real solution on the diet side). Thank you. dichter51@gmx.fr