Help Settings

The vaccine

The vaccine did cure every sickness and birth defect of the time, but the long term side effects was immune system failure and 80% of the population also became infertile and the side effects was inheritable.

Clean, Short

The Super Soldier Potion

It also makes him much bigger, stronger, and as a side effect, incredibly horny. fortunately, the crafty alchemist has the perfect remedy for that side effect.

Adult, Adult Content, Alchemy, Anal, Anthro, Anthropomorphic, Armor, Aroused, Ball Growth, Biting, Canine, Cat, Cock Growth, Consensual, Cum, Cum Inflation, Cumming, Cumshot, Deep Penetration, Domination/Submission, Ejaculation, Erection, Erotic, Explicit, Fantasy, Feline, Flirtation, Fucking, Gay, Growth, Homosexual, Inflation, Interspecies, Knot, Knot Fucking, Lust, M/M, Magic, Male, Male/Male, Masochism, Mild Violence, Muscle Growth, Orgasm, Penetration, Presenting, Rough, Rough Sex, Sex, Sexy, Sheath, Short Story, Size Difference, Size Queen, Small, Sub, Teasing, Third Person, Tie, Tied, Transformation, Wolf

Virtual Transformation - Herm Renamon TF

"well you said there were side effects." shi grinned, realising that one such effect was that what happened in the simulation has an effect on reality.

Digimon, Female, Hermaphrodite, Male, MtH, Renamon, Threeway, Transformation, VR, Virtual Reality, change, tf

Milk, No Sugar

As we mentioned there may be some side effects.

Chemical Use, Dolphin, M/M, Machine, Milking, Mind Control, Orca, Orgasm Denial, Teasing, Toys

Eric's Fur Suit

Most likely, that wasn't a side effect, that's an effect really. eric continued on to read.

Fursuit, M/solo, Masturbation, Solo, Wolf

Summer Heat – Chapter 41: New Experiments

"this is a side effect that is most likely unbearable for tanja. how long have you been at it?"

Alligator, Antelope, Ape, Bear, Beaver, Buffalo, Bunny, Camel, Cheetah, Coyote, Crane, Cub, Deer, Elephant, Family, Female, Giraffe, Goat, Horse, Lioness, Lynx, M/F, Male, Mare, Mouse, Oral, Otter, Pregnancy, School, Snow Leopard, Story Progression, Tigress, Vaginal, Vixen, Weasel, Wolf, Wolfess, Zebra

Chapter XIV: Choice and catharsis

"how bad are those side effects?" "i've used it with a couple of other charges that had used steroids, but the effect varies. some of them just became a little clumsy, while others lost the ability to walk properly.

Age Regression, Babyfur, Border Collie, Clean, Diapers, Doberman, No-Yiff, Wolf, pacifier, wetting

The Orientation Room

"of course, there are other side effects, although in many ways these enhance rather than detract from your experience at this point." those other side effects became quite clear as he watched the readhead continue to go to town on the other man's cock.

Anal, Bull, Deer, Domination/Submission, Fingering, Forcedshifting, Gay, Handjob, M/M, Prison, Pseudo-Rape/NC, Rimming, Rough Sex, Semi NC, Straight-to-Gay, Transformation, dirty talk, reacharound

Fertile Malpractice

Or was it a side effect of the vaccine?

Assisted sex, Breeding, Drugs, Fennec, Heat, Husky, Impregnation, Knot, M/F, M/F/F, Semi NC, Vagina, Vaginal, Voyeurism

Chimera in a Bottle

But after taking a big dose for the last game of the season, a few days after he'd started to show side effects, and thus checked himself in to the clinic.

Breast Growth, Bukkake, Cock Growth, Couple, Equine, Futa, Futanari, Horse, Hyperphallic, M/F, Male to Shemale, Muscle Growth, Sci-Fi, Shemale, Straight, Teen, Tit Fuck, Transformation, Transgender, Von Krieger, breast expansion, dickgirl, feminization

Sudden Urges

Being a fox was one thing, but being a fox with what the doctors called 'an unusually high sex drive way past the upper limits' came with some rather embarrassing side effects saku had swiftly needed to come to terms with.

Cum, Ejaculation, Exhibitionism, Fox, Gay, Knot, M/solo, Male, Masturbation, Public, WritingGroupChallenge

No Rest For The Dicked

#4 of unforseen side-effects okay, so we've got another chapter in the prologue to the unforeseen side-effects story. nearly all main characters have been introduced, all that's really left is to actually explain the cause of this infection right?

Anatomically Correct, Bondage, Cunt Boy, Domination/Submission, Gay, Hemi-penis, Lizard, M/M, Reptile, Transformation