Addiction

Stories where the character becomes physically addicted to muscle, muscle growth, or the like, as with a drug. Not used for stories involving actual drug addiction to conventional drugs like cocaine, heroin, etc.

Related: Butch-to-Fem; Gay to Straight; Getting Dumber; Other Mental Changes; Straight to Gay.

Child of: Mental Changes.

Top Stories: “The brothers”; “Lumberjacked”; “A.I.”; “Red pills”; “Vice (Sometimes drugs offer more than a high)”; “Twelve steps back”; “The new guy”; “A real man”; “The training program”.

Recently Updated: “Curses and consequences”; “The training program”.

18 stories found. Total word count: 275,410.

• A.I. by Corwin  Cock CumMilking Addict HyMusc MuscUp Musc Worship Grad PSD SizeUp AI Viol Bond Andr M/M  Tim’s homemade A.I. software decides to help him get huge. Added Dec 2013 11 parts 30,556 words 47,366 views 4.8 stars (29 votes)

• Big cat by Growlboys  CockUp Cock Addict Tf Viol Fur  There’s a special substance on the market that’s driving people wild. In need of a fix after ten days without, Sam is told of a brothel where he get it. There he finds Doug, a werecat who’s not having a great life right now. Added Jul 2019 3,371 words 3,976 views
• Blowing up in Hollywood by Aphon  CockUp Cock HyCock Addict MuscUp Musc Hairier Dom  Matt eagerly accepted a movie studio executive’s offer to bulk him up for a movie role. What he wasn’t expecting, however, were the dramatic changes his special hormone milk would cause. Added Dec 2018 3 parts 2,118 words 14,269 views 4.4 stars (17 votes)
• The brothers by FanTCMan  AlwHard CockUp Cock Addict 2Gay MuscUp Musc Grad Hairier Inc Bro  Cory Callahan and his three sibs participate in a secret program, resulting in more muscles, body hair, cock size, and horniness. Added Mar 2003 8 parts 22,620 words 92,499 views 4.8 stars (87 votes)

• Cursed cocks by CockTFBoi  CockUp CockDn CumInf HyCum PublicOrg FTM Addict 2Gay MuscUp Scent Libido Grad Hairier HairDecr Nonc HyPher M/M M/M/M/...  Marcus is having a horny night in the dorm when an inadvertent wish by his roommate sends him on a path to a new life. Added Aug 2020 8 parts 25,154 words 9,460 views
• Curses and consequences by BRK  AlwHard CockUp Cock Self AlwCum HyCum XAbs XArms XLimb Addict Libido Grad Taller Retcon SocMed Supn  Reading this story is a bad idea, but you can’t resist now that you know it’s cursed. Added Sep 2021 1,456 words 3,275 views 4.8 stars (10 votes)

• FertiliGro by BeastCZ  AlwHard CockUp Cock Addict 2Gay MuscUp Musc Hairier Bi Het  FertiliGro, a new fertility supplement, promises improved virility and sexual experience in men—though people don’t realize just how much the little capsules will change their life. Added Feb 2020 2 parts 1,729 words 8,458 views 4.4 stars (5 votes)
• Finding destiny by FanTCMan  Addict MuscUp Musc Grad Hairier Nonc  Kyle and Derek embark on their quest for muscle, aided by gym owner Mike. Added Apr 2005 6,537 words 11,645 views 4.7 stars (6 votes)

• Grow gravity by Unknown  CockUp HyCock Addict HyMusc MuscUp Musc Giant SizeUp Immort   Added Aug 2003 3,249 words 25,079 views 4.2 stars (11 votes)

• Lumberjacked by Krisiar  CockUp Cock HyCock Prehen Self NipCum XAbs Addict MuscUp Musc Handsomer Hairier  Trapped by a snowstorm at an underheated family cabin in northern Manitoba, Henry and Will stumble across a hidden sauna in the woods while out looking for wood. It turns out someone out there wants to help out guys like Henry and Will who could do with a little size improvement. Added Aug 2011 Updated Oct 2011 4 parts 12,081 words 84,032 views 4.6 stars (25 votes)

• The new guy by Also Known As  AlwHard CockUp Cock HyCum Addict MuscUp Musc Handsomer Nonc Infect M/M M/M/M  A new employee causes pleasant though potentially cum-plicated problems. Added Jun 2019 Updated Sep 2019 6 parts 28,047 words 20,210 views 4.7 stars (23 votes)

• A real man by DoubleCream  CockDn Addict 2Gay Musc Worship Scent Mpreg PSD SizeDn HairDecr Virgin Cage Dom HyPher  A douchey gym bro wakes up in another world, in another body. Added Jan 2021 Updated Jul 2021 5 parts 21,958 words 14,670 views 4.8 stars (29 votes)
• Red pills by Alakazam1988  CockUp Cock HyCock Addict MuscUp Gut Musc Taller PSD SizeUp Hairier  A struggling college student and part-time stripper is introduced to Red Pills, which are supposed to be the one dick-growth pills that actually work. He’s skeptical—at first. (Chapters 1-7 revised as of summer 2019.) Added Jan 2017 Updated Mar 2021 19 parts 53,990 words 40,093 views 4.7 stars (15 votes)
• The risk by Marc Adrien Godin  CockUp Cock Addict Mental 2Gay MuscUp Musc Libido Rape  Admonished by his now ex-girlfriend to “take a risk”, Sam enrolls in a drug trial. Added Jul 2006 6,728 words 9,375 views

• The training program by BRK  AlwHard CockUp Self HyCum Addict Mental 2Gay MuscUp Musc NoShirts Libido Handsomer Grad Tf Taller PSD SizeUp Hairier Dom Nonc Slave Alien  Recruited to take part in an intense and highly selective three-week LEO training program, Texas Ranger Dusty thinks he and his fellow trainees are in for a lot of hard work and conditioning. What he doesn’t know is what exactly these elite law-enforcement men are being trained for. Added Aug 2021 5 parts 8,850 words 5,712 views 4.6 stars (5 votes)
• Twelve steps back by FanTCMan  CockUp Balls Cock Addict Mental 2Gay MuscUp Musc Worship Libido Handsomer  Ian pursued working out as a way of chasing off his inner demons. Then he heard about a serum that seemed to make you not just bigger, but enhanced everything about you that was masculine and sexy. And if it made you horny too, well, that was fine by him. Added Nov 2003 Updated Mar 2018 9 parts 33,235 words 24,942 views 4.7 stars (13 votes)

• Vice (Sometimes drugs offer more than a high) by Tereshky  CockUp Balls HyCock Self CumInf CumMilking HyCum Addict Immob MuscUp Musc BellyUp SizeUp Virgin Nonc  Jack was a drug kingpin of sorts. Like any potent drug, people craved it, they came to him, offered him their life’s treasures and he gave them their fix. In a world where usually only the strongest survive and only the smartest staid on top, he was doing quite well for himself and living an easy life. There were no rival drug lords because what he had to offer nobody else could give. His drug came from within. Added Jun 2018 Updated Nov 2019 5 parts 11,930 words 34,484 views 4.6 stars (29 votes)

• Year of the ox by Marceau Little Wolf  CockUp Cock HyCock NipCum XCock Addict MusBr MuscUp Musc BellyUp Tf Giant SizeUp 2Animal Nonc  Two brothers’ ailing dairy farm experiences a sudden change after they try an unconventional feeding method. Added Jul 2021 1,801 words 4,557 views 4.0 stars (6 votes)