Mary uncapped the vial with the cow on it, and closed her eyes and gulped it down. She did this for several reasons. First, she had always had a fetish of being milked like a cow. Second, she just found it downright erotic to give milk. And Third, it was beneficial to other people.
For a few minutes, nothing happened and Mary started pacing up and down. Then a warmth soaked through her breasts, And she closed her eyes, feeling her nipples grow hard and her panties get wet. Her breasts began to burgeon, growing larger and larger until they ripped through her shirt. They continued to grow, snapping her bra and growing. At the same moment, her areola spread like oil, stopping at about an inch radius. Her nipples grew slightly lomger, reaching the length of her pinky joint. Her breasts continued to grow, and kept getting heavier and heavier until they pulled her to the ground. They were so heavy, that she was only just able to go on her nads and knees, feeling very aroused and not caring at the time.
Then a new warmth bloomed in her waist, and it seemed to grow more slender. The warmth then traveled to her hips, making them wider, as a result causing her pantss to rip, falling to the ground in a disheveled heap. Her ass inflated, and this caused her panties to snap, leaving her nude. She looked down, and saw that her breasts were so huge, that her nipples touched the floor. Then Mary froze. She could feel her huge breasts working, as if . . . Making milk? Her nipples and areola darkened, beginning to drip little drops of milk onto the floor. Mary cried out, feeling her clitoris clench and she came, her pussy spewing juices onto the floor.
Milk continued to drip from her breasts, and she crawled over to look at herself in the mirror. She looked the same, but her body was way different. Her breasts were more than 5x the size they used to be and dripping milk, and the vial seemed to have done it. She then read the vial closer and it read," Will initiate transformation into human cow. This version does not include udder. However, breasts will grow to immense proportions. Another symptom is that any woman who drinks this will probably be dragged to the ground. This version is a test version and it is most unlikely that it is permanent"