Vitamin S, Chapter 1

Story by sevencrown on SoFurry

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YeaniaAeon and I first started working on this story back in January of 2023. we made it pretty far but then it got put to the side especially with the rough spot I had at the end of that year. I meant to work on it over 2024, but that too failed to happen. Now we are at 2025, which just happens to be the year of the snake. We took that as a sign and decided to get this story finished and out for all of you to read.

Holly just got a hold of a brand new supplement. She's always on the lookout for anything that will help on her quest for a perfect body. And this Vitamin S looks promising.


Chapter 1

Holly made her way to her apartment giddy with excitement. In her hand she was holding a small box that she just picked up from the postal office. Holly hurried up the steps of her building and into her apartment. She kicked the door closed behind her and set her package down on the table. The young woman pulled out a pair of scissors and cut open the box. It was filled with plenty of packaging material and Holly had to dig through it to retrieve the small bottle. She turned the bottle in her hand. At first glance they looked like any other off brand sporting supplement pills.

These things were a steal, I can hardly believe how cheap they were. Holly looked over to an array of other supplements on the counter before looking back at the label. “Vitamin S…” she read off the label. “What the hell even is vitamin S?” I’m sure they work as intended, all the reviews checked out positively.”

Holly quickly popped open the bottle and pulled the protective film off the jar. After fishing out and discarding the wad of cotton inside she pulled out a bright green capsule. She looked at it in her hand for a moment before getting a juice from her fridge. Without any hesitation she popped the pill in her mouth and washed it down with some juice.

“Now, let’s get to work.”

Holly quickly changed from her normal clothes to her exercise attire. She couldn’t afford a gym membership, but she found other ways to work out with what she did have available. Holly ran up and down the apartment complex stairs until she could feel her calves almost burning. After that she used the large ledge over the service entrance to do pull-ups. Back in her apartment Holly lifted buckets full of random junk through a series of weight training exercises.

By the time the sun was setting Holly was soaked in sweat. Still she was smiling as she peeled her sweat soaked clothes off of her body. She paused in front of her mirror, looking at the progress. She wasn’t the same scrawny girl she had been when she first moved in, and that only made her smile widen. Holly jumped into her shower. She let out a gasp as the cold water hit her skin. She let the initial blast of cold water cool her off and then sighed as she felt the water heat up.

As Holly washed off the sweat and grime from her workout, she started to feel a familiar itch. She ran her hands down her legs, feeling the increased muscle tone. Holly then slipped a few fingers up against her folds. Ever since she had started to work out, she always found herself turned on afterwards. In her mind it was just a little reward for all the hard work. Holly pressed her fingers into her fold and let out a soft moan. As her fingers probed her insides, her thumb brushed against her clit. It felt big, engorged, and very sensitive. Holly moaned louder as her thumb stroked it. Before long, she let out a sharp cry as she hit her orgasm. Holly was surprised she actually squirted, something she never did before. Of course, the mess was quickly washed down the drain. In the midst of the wonderful afterglow, she finished her shower, just as the water was starting to go cool.

After drying off and fixing her hair she slipped into her old slightly shabby, but still comfortable, robe and went to get some food. Holly mixed up a thick protein shake to go with her dinner. As she mixed it to pure smoothness in the blender she let out a small yawn.

Damn, I’m feeling tired already. I hope I don’t pass out in my salad.

She flicked the TV on, hoping some entertainment would help to keep her awake enough to finish dinner. Holly poured out her shake and took a sip before starting work on the salad. By the time she was done the main course was finished in the microwave. Holly ate at the counter, afraid that if she were to sit down she would end up passed out on the couch.

Maybe I overdid it a bit today. Either that or it’s from that orgasm in the shower. Damn, that felt good. She smiled as she chewed her food. Whatever it was, I’m hitting the sack after dinner. It was a long week at work too, and a good night's sleep will do wonders for me.

Holly cleaned up her dishes, or at least rinsed them out in the sink before turning off the light and heading to her bedroom. Her bed was an old busted futon. It couldn't be folded up into a couch any more, and one side was propped up with a stack of phone books, but at least the futon itself didn’t smell weird. Holly plugged in her phone for the night, slipped out of her robe and climbed under the sheets.

She had given up on pajamas months ago after reading an article about getting a better night’s rest sleeping in the nude. Holly wasn’t sure if it was all in her head or it was actually working, but she doubted she would ever go back at this point. She flicked off her lamp and quickly fell asleep.

The first few hours of sleep were completely normal. Her breathing was slow, and she was usually fairly still when she slept. It wasn’t until the middle of the night when Holly started to shift and squirm. In her dreams things were taking an erotic turn, while in the real world something much stranger was going on. Holly’s clit twitched and grew hard, peeking out of its hood. As she moaned softly lost in her dreams, blood flowed to her clit and it became engorged. More pushed its way out from the hood. It quickly grew in length as it pulsed with every beat of her heart. As Holly squirmed in her bed the shaft thickened, growing in girth as large veins popped out along the sides

She pitched quite a tent with her new fully grown penis. Standing proud it twitched along to Holly’s dream. In the dream she was pounding her cock into Jamie, a coworker of Holly’s. Honestly, she did have a crush on the young woman, but she had never acted upon it in the real world. When she let out a loud and lusty moan in response to her dream-fucking of Jamie the newly formed shaft exploded with its first load. After that her dreams calmed down and she fell back into a normal restful sleep, her new addition slowly went soft, but still left a noticeable bulge visible through the sheets.

The beeping of her alarm woke Holly from her sleep. She swatted at the phone to silence it before dragging herself out of bed. Holly didn’t notice the dried cum as she threw back the sheets. She walked groggily to the bathroom, needing desperately to relieve her bladder. It wasn’t until she sat down on the toilet did she notice something was different. Holly nearly jumped up to the ceiling when she felt the cool wet porcelain of the bowl make contact with her new appendage. She turned to face the mirror and stared, eyes wide down between her legs. Even in her shock her hand still reached out to touch it.

"No way…this can’t be real, this can’t be a part of me…” Holly spoke aloud in harsh whispers.

Touching it felt good and soon her cock responded, quickly growing to stand at attention. What Holly thought was at first a modest sized penis quickly swelled to a monster cock, standing proud at fifteen inches long. She couldn’t help but to wrap her fingers around the shaft and slowly start to stroke. Oddly enough, watching herself jerk off in the bathroom mirror only added to the erotic thrill of the act. Holly’s entire body tensed and she curled her toes tightly into the bathroom rug. She came hard, her cock showering her mirror and vanity in hot white cum. As the last few drops dribbled out of her shaft, Holly slowly sank to her knees feeling completely spent.

"Ok…” she panted, “it's real…I grew a dick. But how?”

Holly reached between her legs and under the now semi flaccid cock. She didn't find any testicles, and her pussy was where it was supposed to be. She looked back up at the cum coated mirror.

So, no balls, but I still can make cum…a lot of cum. She mused as she slowly got to her feat.

Holly decided on a quick shower to clean up and steady her mind. As the hot water ran over her legs she became aware of the dried cum left over from her wet dream. She was still lost in a bit of a haze as it was washed down the drain. She wasn’t looking forward to cleaning up the mirror and vanity either.

Next time I should just jerk off in the shower…what am I even saying? Who am I kidding? It felt amazing, way better than just stroking my clit honestly.

Holly decided to at least get dressed before dealing with the mess. Her panties were a bit of a struggle trying to get her shaft to fit in, but she managed. A sports bra and shorts quickly followed and she did what she could to quickly deal with the mess. She filled a trash bag with paper towels by the end. Even though she sprayed down the entire thing with cleaner, the musky scent of cum still lingered in the room, so Holly opened a window, content to just let it air out for a bit.

After cleaning up her mess, Holly was starving. She started with a tall glass of juice while she prepared the rest of her breakfast with a big bowl of oatmeal and some freshly sliced fruit. After eating a few spoonfuls of her oatmeal, Holly reached for her supplements. She took another Vitamin S along with the rest of her daily supplements, washing them all down with the rest of her juice. The thought that the green capsule could be responsible for her sudden transformation never entered her mind.

Normally Holly would start her day with a jog, but she wasn’t sure how her new package would do on a five-k run. Instead she fired up an aerobics workout on her TV and started to follow along with the instructor. In the beginning the sensation of her panties rubbing against the head of her cock would cause it to stir, but eventually Holly got used to the sensation, mostly.

Damn, I’m going to need a jock strap or something…maybe I can just order one online. She thought as she alternated lifting her legs up and kicking out.

Other than occasionally having to pop in the shower to relieve herself, Holly was able to get through her cross-fit training for the day, as well as taking care of a few chores around the house. After sunset she went for an evening jog, feeling a little more confident in her self control by that point. As Holly locked her apartment door after her run, She caught a good look at herself in the hallway mirror.

Holly stared intently, scrutinizing her body. She ignored the bulge in her shorts for the time being, her attention being on the rest of her form. She couldn’t be completely sure, but she felt like she looked bigger somehow. Of course Holly looked more cut with sweat dripping over her body, but this was more than just a wet look. She flexed her bicep and inspected the muscle.

Am I delusional, or have I gained some mass since last night? I can’t have, not after just a day. Then again I woke up with a dick this morning so who knows what’s possible?

Holly shook her head at her reflection before going to her room to strip down for a shower. As the hot water cascaded down her body, Holly took a look at her cock. She wasn’t overly surprised it was getting hard, but she was a bit surprised by its apparent increase in size. Holly could swear it had gotten bigger in both length and girth since the morning. It felt bigger as well as she couldn’t quite wrap her hand all the way around it now.

If I had balls they’d be dry by now…Ok, just one more…

Holly closed her eyes and wrapped both hands around her shaft and started to stroke it under the warm water of the shower. In her mind she couldn’t help thinking about Jamie and what it would feel like to impale the woman on her shaft. With that image in her head it didn’t take long before her latest load was making its way down the drain. Holly leaned back against the wall in the shower. She felt so tired she considered just passing out after her shower, but her hunger won out in the end.

Besides, I’m going to have to replace all the protein I blew today…”

Holly dried off and tied her hair back in a simple ponytail just so it was out of her face. As tired as she was, she didn’t bother fetching her robe and just wrapped the towel around her body. Holly needed food, and needed a good amount of it. She threw two dinners into the microwave to heat up while she made an extra large shake to chug down. Once her stomach had been satisfied, there was nothing else to keep her up.

Holly didn’t bother setting her alarm for the next day, she needed as much rest as she could get. She slipped underneath her sheets. Thankfully she had changed her bed earlier when she had the energy. Once she was settled she was out like a light. The dreams came quickly tonight, and they started off with a bang. Jamie was joined by Kate, another acquaintance from work. In the dream they were soon more than intimate with Holly.

Unsurprisingly this had an effect on her body in the real world. As Holly shifted, sighed, and moaned in bed, her cock started to once again grow hard. This time, however, it did not stop growing. The tent in the bedsheets was raised higher and higher as the shaft grew to a more than impressive twenty-one inches in length, and a girth to match. It might as well have been a third arm to Holly.

As her dream self came closer to a mind blowing climax, something else happened to her body. Her massive poll of a cock split down the center into a mirror pair of shafts. They had lost some of the insane girth in the process, but were still more than thick. Not to mention they retained every inch of length.

Holly woke up needing to desperately relieve herself. She quickly made her way to the bathroom still half asleep. Even though Holly had a cock, peeing while standing wasn't an option for her. She reached down to hold her shaft as she sat down so as to not have it touch the cold porcelain. Holly was surprised to find more than she expected that morning. Luckily, she was already sitting down when she discovered her second shaft.

After the initial shock triggered her bladder release, Holly shot up and rushed to the mirror. Seeing her reflection with two identical shafts made it more real in her mind than simply looking down. Not only did Holly now sport twin cocks, she noticed they were longer than yesterday. As she stared at her reflection she felt herself strangely getting turned on.

As blood pumped into her her shafts and they grew erect Holly's eyes got even bigger. They were longer and thicker than any cock she had seen, even on the internet. And she had two of them. Holly wrapped a hand around one. She could just fit her hand around the girth of her shaft. She felt a tingle go down her spine and she knew what she needed to do. Holly jumped into the shower before she could make a mess in the bathroom, again.

She turned on the water. Even cold it did nothing to kill her twin hard-ons. Holly started with stroking one shaft, but she couldn’t ignore the other one. She wrapped her other hand around the second shaft and slowly but steadily stroked. Holly was torn between stroking both shafts, and using both hands to pleasure one.

Fuck! I need more hands, or some people to help me…

She worked both shafts until she couldn’t take it any more. She was in an almost whiteout of bliss as she came. The shower was coated in her cum, only some of it was washed down by the spray.

Holly slumped down in her own pool of cum and water.

“I can ejaculate even more now…” she panted, "what is going on? It's insane!"

Holly washed and rinsed off any of the remaining cum down the drain. She sighed, feeling at least a little more relaxed as she turned off the water.

As she dried off with a towel she walked over to the mirror. Now that she wasn’t surprised by her twin cocks, Holly realized how more toned her abs had gotten. She had a flat belly before, but now she could trace a finger along the visible muscles. Upon further inspection of her shower-fresh body she noticed her arms and legs looked noticeably firmer and cut. Holly couldn’t help flexing a bit in her bathroom mirror, liking those changes to her body at least.

Holly wrapped the towel around her waist. The advantage of living alone was that clothing was truly optional, as long as you had decent curtains. She was feeling rather hungry and made her way to the kitchen to take care of that. Holly needed more than just oatmeal and some fruit this morning, she had a craving for protein and whipped up a simple but large omelet for breakfast. She emptied the container of juice into her glass and reached for her supplements. She held the bottle of Holly Vitamin S in her hand for a moment.

It’s hard to deny it’s doing something to my body. Holly thought as she looked over her well toned body. In just two days I’m seeing more results than from weeks of working out. Then again I’ve had a different kind of gain too… she placed a hand over the bulge in the towel. Did it cause that? Nah, that's absurd! If that works every guy would be using this stuff. With that, Holly shook out another green pill and swallowed it with some juice.

Feeling good after her big breakfast, Holly was ready to get to work. She tried to get dressed, but her twin cocks were making putting on a simple pair of panties difficult. Just when Holly managed to get an old pair pulled up around them, she caught a glimpse of her package in the mirror and she started to get hot. They popped out the top of her panties forcing them down slightly as they did so. It looked like any stray dirty thought would make her hard.

I swear, guys must really think with their cock or cocks in my case… Holly sighed and dug around in her drawers.

She ended up just going commando in a pair of gym shorts. The support was lacking, but at least she could kind of ignore the twin beasts if she couldn't see them. With her lower half the best she could make of it, Holly put on a sports bra and tied back her hair. She put on some music and started to work out with her improvised equipment. Holly was torn throughout the day. Her body seemed to be almost craving the exercise, but the rubbing and movements would eventually get her cocks craving something else. All Holly could do was take a jerk-off break in the shower in between her routines.

As the sun set and the stars came out she was exhausted equally from working out and from draining her cocks of cum. As she stripped down for a proper shower Holly couldn’t help smiling at her sweat-slicked body.

“God damn, I look good!” she turned to see more of her body in the mirror.

The increase in her muscle mass and tone was obvious. Sure, Holly now had a twin pair of cocks, but otherwise she couldn't argue with the results. Whatever was in those pills, the Vitamin S delivered. Holly shifted and flexed in the mirror, falling in love with her more powerful body.

While flexing something caught Holly's eye. Obviously with nothing holding them in her cocks were free to swing and sway as she moved. But she could have sworn one of her shafts moved on its own. It wasn't just a twitch, she knew what that felt like from all the times she pumped a load into the shower. It was as if it had lifted up for a moment, but not like it became erect.

I must just be tired. It's amazing I'm not sore from working out nearly all day. A hot shower, a big dinner and a good night's rest is what I need, especially with work tomorrow morning.

Holly turned the shower up hotter than usual, wanting to help her newfound muscles to relax. She practically giggled as she watched suds and water run over her now well cut body.

It's almost a shame no one will see this tomorrow at work, but I can't very well show up in shorts and a sports bra to the office.

Holly ended her shower when the hot water started to run out. She quickly dried off, being careful to not arouse her twin cocks while drying them. Once she was dry she opted for just her robe for the rest of the evening.

She was still feeling a craving for protein. She threw several frozen meals into the microwave at once. While they were cooking she mixed up an entire pitcher of protein shake. She guzzled it down while plowing though a massive salad. As she filled her bottomless pit of a stomach she watched some TV.

It was just an old sitcom rerun, but it was good enough for Holly. During a commercial break she saw an ad for Vitamin S, well, not just Vitamin S. Apparently they had a whole line of supplements, each one with a different letter.

I wonder if they all work as good as the S supplement. I know a few people who could benefit from that W one for weight loss. Maybe I should mention it. Holly mused as she started in on her main course.

With her dinner finished and dishes washed Holly made her way to her bedroom. She did feel tired, but it was the good kind of tired. Holly plugged in her phone and set the alarm before removing her robe and slipping in between the sheets. She enjoyed the slight coolness of the sheets against her bare skin as she got comfortable. It didn't take long for her to pass out after that.

For the next hour or so the night passed normally. Then something started to stir. Underneath Holly’s sheets things started to get strange. At first it looked like the usual nightly erection, but after they reached about half mast, they stopped lifting up and started to move. Like a pair of long and thick tentacles her cocks moved and shifted under her sheets. The motions did not seem to awaken Holly, who was instead in the midst of yet another erotic dream starring her coworkers.

Some time before dawn the movement stopped and they seemed to coil up into a pile on Holly’s thighs and abs. The young woman continued to sleep as the sun started to rise. It wasn’t until the alarm on her phone started to go off that Holly roused. She flailed to turn off the alarm and then let out a sigh as she stretched out her body while still in bed.

Another boring Monday. I hope nothing else happened down below overnight, I’ve got to go to work.

After letting out another sigh, Holly tossed aside her sheet. She instantly froze then let out an ear piercing scream. A pair of snakes were staring back at her. They were coiled up on her body. As she tried not to move a muscle, the pair of snakes began to move, uncoiling and sliding slowly over her body.

Through her body freezing fear, Holly soon became aware of the fact that she could feel the snakes, and it sent a pleasant tingle up and down her spine as she shifted and moved. As they slid up over the firm mounds of her chest she realized these were not just a pair of snakes. Carefully she reached out with one hand and touched the head of one of the snakes. As she did so she let out a gasp from the sensation. Looking down she saw the pair of snakes were attached to her groin, where her pair of cocks had been when she fell asleep.

“Holy fucking shit…” Holly whispered, still not fully believing it. “I gotta still be dreaming.”

The ‘snakes’ were around a meter and a half long, though they enjoyed coiling around and against their host. Their bodies were thick, close to thirteen centimeters in diameter. The snakes lacked any scales and were still the same color they had been as cocks, a slightly paler shade of Holly’s skin tone. The heads were wide at the base and tapered forward, generally resembling a python, apart from the smooth skin. The eyes on each head were the same shade of brown as her own eyes.

The snakes seemed to cuddle up against her upper body. The right snake head flicked its tongue out and it tickled her cheek.

“Ok…not dreaming…”

Holly touched the head of the snake again, there was sensitivity similar to the glans as she petted the snake. Both her and the snake seemed to be enjoying it, and the left snake bumped against her asking for attention as well.

“Mmmm, I’ve heard the term trouser snake before, but this is crazy…” she closed her eyes and let out a long moan, “I…I better get to the shower first!”

The snakes wrapped themselves around Holly as she ran to the bathroom. They stroked their heads against her body as she fumbled with the faucet on the shower. Once the water was running, she took a snake head in each hand, petting and stroking. The sensations were both different and familiar. And they were certainly no less intense. She cried out as her snake cocks opened their mouths and spat out cum all over the shower enclosure.

“Oh…fuck…” Holly whispered as she slid down the wall to the floor.

The snakes cuddled against her body, tongues gently flicking over her skin. With her eyes closed, Holly realized she could see through the snakes’ eyes, although the view was slightly fuzzy. The water washed the massive twin loads of cum down the drain as Holly recovered.

Carefully she got back on her feet and turned off the water. After opening the door, the snakes reached over and retrieved a towel for Holly.

“Thanks.” she said softly before starting to dry off.

Standing in front of her mirror, Holly took a good look at herself. Her body had bulked up a bit overnight, but it hardly surprised her at this point. She posed and flexed, in the mirror while the snakes watched. At this point she was beyond what she was looking for, but was hardly disappointed.

“I guess I need a big bod to carry you two around.” she smirked. “How am I even going to dress with you two? I suppose slacks are not an option at all.”

Holly headed back to her bedroom to get dressed. She didn’t bother with any kind of underwear, opting for a long skirt her mother had given her last Christmas that she felt too guilty about throwing away. The snakes kept lifting it up to look around, but if they behaved she could hide them curled around her legs.

That turned out to be the easier part of dressing for work, however. With her increased build most of her blouses and bras were too small for her. In the end she managed to stretch an old worn out bra over her chest. This was paired with a stretchy top that practically hugged every muscle on her upper body.

“What do you think, boys?” she asked the snakes as they lifted up her long skirt. “Yeah, I look more like a buff superhero than a phone rep. We’re going to need to stop off and do some clothes shopping tonight. Oh, and I, well, we need more food after this weekend. I’m probably going to eat whatever is left for breakfast. I hope I have enough in my account to make it to payday.”

Even with her worries, Holly had to smile. She looked great, felt great, and man did she want to nail both Jamie and Kate, preferably at the same time. The snakes were hissing in agreement.

“I guess you can chalk me up as another satisfied customer of Vitamin S.” she smiled before heading to her kitchen to make breakfast.

________________________________________

Original characters and setting by Yeania Aeon

FA: https://www.furaffinity.net/user/yeaniaaeon

Additional writing and editing by Syntaxerror37

FA: https://www.furaffinity.net/user/sevencrown37/

SoFurry: https://sevencrown.sofurry.com/

Discord: therealse37

Bluesky: @sevencrown37.bsky.social