1, 5 or 10 doses of SoW (10pp per dose), Shrink (20pp per dose), IVU (20 pp per dose), counteract poison (20 pp per dose)... potions. Discounts on big quantities !!
I can make any potions requiring an alchemy skill below 70 here :
http://wiki.project1999.org/index.php/Skill_Alchemy