He poked his fingers in and pulled out a sweet, but oddly enough he found a black one. He read the bottle to see if he could find out anything about it, but all it said was the effects 'are extreme'. "Must be pretty good then" He said, popping it into his mouth and swallowing it. For a moment, nothing seemed to happen.
Then a split second later, he threw back his head and let loose a deafening roar, the sound leaving his mouth completly inhuman as he began to grow at a rapid pace, a bulge forming in his straining underwear as his shirt was further tightened by 10 bumps forming along his chest. Purple scales began to grow around his arms as black scales lined his chest and growing neck, lifting his head away from his shoulders.
"Oh yeessssss!" He hissed, feeling a new strength flow through him as he ripped off his shirt, revealing 10 large scaly breasts growing up his lenghtening torso. Ruby red nipples lined them as thick muscles began to grow underneath them, spreading to his sides as he began growing. The bed was starting to strain underneath his growing bulk as the bulge up front grew larger, soon tearing apart as his cock sprang free, now around 2ft long and still growing, splitting down the middle as it became two, slowly growing more and more as he felt his sagging balls hang between his legs, a trickle of something running down them as he craned his head to look. Just behind his balls, he had gained a large, scaly slit.
"Mmmrrrr...." he ran a finger along it, the digits growing a little thicker as the palms swelled into pads, each digit gaining a huge taloned claw. The bed gave to his ballooning mass, his swelling ass taking the impact as a large thick tail began to grow from behind, slowly growing longer and longer, thicker and thicker, curling up alongside the changing human.
He drove a finger into the slit, grasping one of his cocks in his hand as he took the other lenght in his mouth. They were already capable of reaching his chin, but they just kept growing and growing, the heads now pointed with flaring barbs as the colours turned a deep red, knots forming at the bases.
"This is too good..." He moaned to himself, looking down at the bottle. It had been knocked aside in his lust, and he noticed that there was a LOAD of black candies in there. As he thought of the possibilites, his mind was starting to sharpen, become more than human as draconic instincts began to flood his mind, invading his space...but he didn't mind at all, he WANTED this.
"Mmm...ideas..."