<s>[INST] Hi, I was just curious to know if taking Valium can affect (increase) Gamma GT readings in a Liver Function Test? I am 31 and enjoy a drink, wouldn t go so far to say a Problem drinker , however a recent blood test showed Gamma GT of 79. All other Liver Functions were within normal range. Thanks [/INST] Hello Valium may cause liver injury particularly in elderly, HIV patients etc.However, its effect on liver in general population is scanty. Increased GGT in your case is most likely due to alcohol Chat Doctor.  GGT is specific for alcoholic liver injury. You may need few more investigations like viral markers and ultrasound of abdomen. I suggest tablet ursodeoxycholic acid 300 mg twice daily for three months to my patients. It helps in regeneration of liver cells. You should completely avoid alcohol. It is very necessary for you. Get well soon. Take Care </s>