Suprep - I have a bottle for my girlfriend,she is has very bad ache.Is this a good for her?and will?

Are you sure she's constipated? There are some other reasons for tummy ache when you wouldn't give a lax. Where exactly is the ache?

No, I wouldn't be doling out prescription meds to her without even knowing what's causing her ache. It could be something totally unrelated like appendicitis, gallstones, or just really bad gas pain. Take 2 Tums or Gas-X and if pain does not subside then go to an urgent care. Suprep is meant for cleaning out the bowel for colonoscopy prep. It's not meant for random belly ache.