the easier way is to try mineral oil over the counter,ash the pharmacist on duty how much your should take.(IE: 30 ml first and if not work ,repeat it one more time?) or
Dulcolax 2 tablets first and repeat in 2-3 hours?(maxium 4 tablet in one course of attempt in general) and may be follow with an suppository too, ask the pharmacist in the drug store and they should know.
As Lisa suggested, Miralax 1 packet daily take it for a few days should work better than Metamucil and relatively safe.
Senakot-S is stronger than Senakot.
Peri-colace is the same as Senakot-s; Colace is the same as Senakot. I am talking here about substitution strength; not generic substitution.
Last but not least,l the Go-lytely solution but you need a Rx for it ;that is why if the OTC drug don't work within 3 or 4 days or trying ,consultation with a doctor (GP) is a good ideas;but make sure you tell them what OTC medication you had tried and not been to your satisfaction. Otherwise the doc just prescribe the same old thing for you and you will waste time and money.
Please know that my personal opinion is not intended nor implied to be a substitute for professional medical advice. If provided, information are for educational purposes.Consult doctor is a MUST for changing of treatment plans.