This is a story two pack.
 
The Pills synopsis:
 
Alec had always been short--high school was a nightmare and the only person shorter than him was his girlfriend, Donna. Now, he's an adult and still standing at only five feet tall. He decides to try a new clinic that promises to make him taller. But when an eight-foot-tall Donna walks in, he's a little dubious . . .

After taking a few pills he wakes up in her bed, but now he's gotten even smaller! What will happen when these two get together? Will Alec get even smaller? Will Donna get larger?
 
Contains: (Growing woman, shrinking man)
 
The Pills 2 synopsis:
 
Now that Alec has been shrunken to a foot tall, he realizes that Donna means to call in a friend! Enter Beth, a twelve-foot tall bodybuilder who is as intrigued with the tiny man as she is with her friend. Alec is forced to watch the colossal women play, but will he even enjoy being included?

Things really heat up when the girls get even bigger . . .

Contains: (shrunken man, growing women, disproportionate breasts to body, strap-on sex)