Intravenous Solutions

Found in Witch's Hex in the Wizard City Hexcrawl.

In a back alley reeking of blood and littered with vampire bats is a petite little shop run by three witchy sisters - Intravenous Solutions. Gretchin, Sascha, and Filamina sell not potions, but serums, by buying blood wholesale and processing it themselves. With various methods of centrifugation and infusion, they add particular alchemical ingredients to the stock serums to produce potent magical effects.

Some key differences between potions and serums:

• Serums are injected, rather than ingested. (Syringes and needles sold separately!)
• Serums are much stronger. Their effects are more immediate. Potions take several minutes to take effect. Serums take seconds.
• Serums go bad much quicker, and require refrigeration or freezing to extend their lifespan.
• When serums expire, they start to lose effectiveness or gain potentially deleterious qualities.
• Saves against Serums are at disadvantage by default, as it's harder to resist something that's already in your blood.

Source
Also, pretty legit.

Roll 4d20. 

These are what serums are available presently.

If doubles are rolled, then that serum is on sale for a discounted price (50% Off), but is "Slightly Expired".

If triples are rolled, then the recipe for that serum is being auctioned off to the highest bidder. The Witches only take objects of sincere personal attachment instead of money or other valuables. The more attachment and love an item has, the more valuable it is.

If a quadruple is rolled, then Intravenous Solutions is going out of business, and the three sisters are donating their last batches of serum. They have an entire crate (4d12 vials) of fresh serum available for the cost of a single portion.

d20	(Blank) Serum	Effects	Duration	Derived From...	Price (gp/use)
1	Jump	Triples jump distance.	1 Hour	Strong Folk	2d10
2	Gecko	Skin secretes a slippery oil, making it easy to squeeze into tight places but difficult to hold things.	1 Hour	Obese cats.	2d10
3	Whale	Can hold breath for up to 10 minutes.	1 Hour	Unborn Mammals	2d10
4	Growth	As Enlarge. Causes Exhaustion afterwards.	1 Hour	Giants	2d10
5	Bloodhound	Subject gains potent sense of smell.	1 Hour	Chefs	3d10
6	Cure	Heals 2d4 damage.	Instant	Good Clerics	3d10
7	Hotblood	Induces a bloodthirsty rage, causing subject to charge and attack first person seen.	10 Min	Boars	3d10
8	Love	Subject falls in love with the first person seen. Effects wear off when serum expires.	1 Hour	True Lovers	4d10
9	Coldblood	Provides immunity to empathetic behaviors and emotion manipulating spells.	1 Hour	Snakes	4d10
10	Eelskin	Causes severe static shocks on touching raw skin. 10 Minute Duration.	10 Min	The Recently Criminally Executed	d10 x 10
11	Truth	Compels a state of suggestiveness. Causes Exhaustion afterwards.	1 Hour	Virgins	d10 x 10
12	Elf	Enhances the size of your eyes and makes one generally more elfish in appearance. Grants enhanced vision and a CHA bonus.	1 Hour	Elves	d10 x 10
13	Parabiotic	Reverse-ages the host by a decade. Effects temporary. Like a botox shot.	1 Day	Innocents	2d10 x 10
14	Memory	Remember everything you’ve seen or heard.	1 Hour	Librarians	2d10 x 10
15	Mimic	Subject takes on the appearance of anyone they are looking at.	1 Hour	Doppelgangers.	2d10 x 10
16	Blank Slate	Permanent memory loss from everything up to 1 Day before use.	Instant	Blackout Drunk Students	3d10 x 10
17	Eyebite	Horrid blackness fills the eyes, causing temporary forgetfulness in those who gaze upon them.	1 Min	Dark Elves	3d10 x 10
18	Mead	Grants poetic inspiration. Creative works are far easier to undertake.	1 Hour	Completely Exsanguinated Bards	3d10 x 10
19	Neutralizing	Provides potent immunological effects, curing any Diseases or Poisons, even magical ones.	Instant	Magical Crabs	d10 x 100
20	Trollblood	Regeneration - Regrows lost limbs.	10 Min	Trolls	d10 x 100

That mead-looking stuff in the upper
third of the vial, that's serum.
Source

Slightly Expired Serums are only 1d4 Days past their expiration date. For every Day beyond its expiration date there is a cumulative 10% chance of serum failure. Once a serum reaches a 100% failure rate, it becomes a Bargin Bin Serum.

Bargin Bin Serums come by the box, aren't labeled, and produce entirely random effects. It's like the discount DVD bin at the gas station, but you don't know what's inside and it carries bloodborne pathogens.

All Serums of this magical nature normally only last 3 days once they're made before they begin to expire. Refrigeration extends the time required for serums to expire to double the time (1 Week). Freezing will extend this duration up to 3 Months, but every time a sample is frozen it permanently gains a 10% failure chance.

The Sisters will also buy blood wholesale. The rarer or more interesting the blood, the more they'll offer. They will buy whole blood at the listed price for its derived serum, by the pint, but only if it's less than a Day old. (Note: a completely exsanguinated average adult male corpse will yield about 10 pints of blood. Enough for a full commercial batch of magic serum! You will need special tools to complete exsanguinate something, though. Normal methods will net you maybe 1d6 pints per corpse.)

For example, let's say you recently killed a Librarian - not judging, just saying. If you immediately drained their blood and transported it to the Sisters, they'd pay 2d10x10 gold per pint. No questions asked. Alternatively, they would offer you 1 vial of Memory Serum per pint, instead of gold. Making said serum would take 1 Day for the Sisters..

Bargin Bin / Completely Expired Serum Effects

d20	Effects	Effect Notes
1	Roll Twice	Ignore Duplicates
2	Poison	Save or Die.
3	Slow Poison	Save or Die… in 1 Hours.
4	Slower Poison	Save or Die in 10 Hours.
5	Severe Fever	Temporarily cut all stats in half.
6	Exhaustion	Accompanied by Severe Sweating and Dehydration
7	Paralysis	1 Hour, followed by stiffness.
8	Tumor Growth	50% Chance it’s benign.
9	Arcanorheumatism	Painful spell effects begin to manifest in subject’s limbs and joints, particularly the neck.
10	Hallucinations	Related to who the blood came from.
11	Reversed Effect	Best approximation.
12	Blood Infection	Bloodborne pathogens derived from wizards tend to be exceptionally deleterious.
13	Spell Loss	All prepared spell slots / magic die / spells are lost for the day.
14	Compromised Immunity	Automatically fail all Saves against Poisons and Diseases for 1 Month.
15	No Effect
16
17
18
19
20	Minor Healing	Heal 1 HP.