From D&D Wiki
Aphrodisiac is a clear liquid that is rarely found in nature. It was originally crafted as part of a joke by a mischievous gnome, but later found a lot of attention from the general population. It requires 8 Knowledge(nature) and 12 Craft(alchemy) to produce, but some foods and normal medical herbs also contains the effects of Aphrodisiac (but at a lower Fortitude Save DC)
There are also the chance of heart failure if too much is ingested. If a victim ingests 10 doses within 2 hours and fails all of their saveing throws, their hearts rate and temperature will reach critical levels and the hart will fail. If the victim does not receive help (a DC 15 Heal check) with in 5 minutes the victim dies.
If the victim is saved they suffer 1d6 Con damage.
Type: Ingested DC 12
Incubation Time: 1d4 minutes
Ability Damage: none.
Skill Penalty: -5 to -30 concentration and knowledge checks. For every hour with out cure or release the skill penalty rises by -5 to a total of -30 after 5 hours.
Effect: Your hear rate and body temperature rises and your hormone production skyrockets. You feel the increased urge to mate and copulate with what ever your sexual orientation is. You have a hard time concentrating on anything else and your eyes keep focusing on inappropriate things. (treat this as the person becoming Fascinated)
Curing: Without magic, a successful save stops the effect. Otherwise the effect dissipates after 10 hours. Mating and copulating dose not cure the "poison" but merely resets the skill penalty to -5. Price: 50 gp