Hello dear

Warm welcome to Healthcaremagic.com
I have evaluated your query thoroughly .

* The constipation is not related to disc protrusion issue .

* Taking laxative is not the remedy , you need to re establish the gut
rhythm with specific measures , so that you do not become dependent
upon laxative onwards .

Dietary measures to be considered are :

Drink plenty of liquids .
Consume high fiber diet with more of green leafy vegetables , whole grains , cereals , legumes , pulses , organic fresh fruits .
Avoid excess oil , ghee , butter , dairy products , non veg stuffs till possible .

Life style modifications to be considered :

Regular walking , exercises , YOGA are must .
Avoid prolong fasting , over eating .
Manage timings of breakfast , lunch , dinners till possible .
Chew your food very thoroughly .

Avoid stress , anxiety .
If consuming alcohol , tobacco in any form has to be stopped .
Manage to have regular sound sleep of 7 - 8 hours .
Keep your blood sugar , cholesterol , weight under control .

Medicinal support can be obtained with :

Bulk forming laxative as Isphaghula husk in glass of lukewarm water instead of lactulose as per advise of your doctor .
Evaluation in form of necessary ultrasound , colonoscopy may be demand of time according to the response to treatment and clinician concern .

Hope this clears your doubt .
Wishing you fine recovery .

Welcome for any further assistance .
Regards take care .