andy ▁for ▁as ▁little ▁as ▁two ▁weeks . ▁G ly cy r rh izin ▁can ▁cause ▁pot ass ium ▁levels ▁in ▁the ▁body ▁to ▁fall , ▁trigger ing ▁ab normal ▁heart ▁rh yth ms , ▁as ▁well ▁as ▁high ▁blood ▁pressure , ▁ed ema ▁( sw elling ), ▁le th arg y , ▁and ▁con gest ive ▁heart ▁failure ▁in ▁some ▁people . ▁ ▁Li qu or ice ▁has ▁several ▁varied ▁uses ▁in ▁her bal ▁medicine , ▁such ▁as ▁acting ▁as ▁a ▁m ild ▁la x ative ▁by ▁increasing ▁prost ag land ins . ▁ ▁Compar ative ▁studies ▁of ▁pre gn ant ▁women ▁suggest ▁that ▁excess ive ▁amounts ▁of ▁liqu or ice ▁( 1 0 0   g ▁a ▁week ) ▁may ▁advers ely ▁affect ▁both ▁I Q ▁and ▁behaviour ▁tra its ▁of ▁off spring . ▁ ▁Some ▁people ▁report ▁that ▁black ▁liqu or ice ▁con fection ery ▁causes ▁their ▁st ools ▁to ▁become ▁green , ▁although ▁this ▁is ▁probably ▁due ▁to ▁the ▁blue ▁food ▁colour ing ▁used ▁by ▁many ▁manufact ur ers . ▁ ▁Alexander ▁the ▁Great ▁supplied ▁his ▁troops ▁with ▁r ations ▁of ▁liqu or ice ▁root ▁whilst ▁march ing ▁because ▁of ▁its ▁th irst - qu en ch ing ▁qual ities . ▁ ▁An ▁excess ive ▁amount ▁of ▁black ▁liqu or ice ▁consumption ▁can ▁cause ▁a ▁ch lor ide - res istant ▁met abol ic ▁al kal osis . ▁ ▁Red ▁liqu or ice ▁ ▁In ▁many ▁countries ▁there ▁is ▁also ▁a ▁product ▁sometimes ▁known ▁as ▁red ▁liqu or ice