The Case of the Dangerous Solution

{{Short description|Book by Carolyn Keene}}
{{Use mdy dates|date=March 2025}}
{{Infobox book
| name = The Case of the Dangerous Solution
| image = NancyDrewDangerousSolution.jpg
| caption = An image of the cover of Nancy Drew: The Case of the Dangerous Solution
| author = [[Carolyn Keene]]
| language = [[English language|English]]
| genre = [[Detective fiction|Detective]], [[mystery novel]]
| publisher = Aladdin Paperbacks
| pub_date = 1995
| series = [[Nancy Drew stories]]
| preceded_by = [[The Riddle in the Rare Book]]
| followed_by = [[The Treasure in the Royal Tower]]
| cover_artist = Aleta Jenks
| pages = 160 pp
| isbn = 9780606085755
| oclc = 33126477|
| country = [[United States]]
}}
{{Portal|Children's literature|Novels
}}
'''''The Case of the Dangerous Solution''''' is a [[Middle grade literature|middle grade]] novel by [[Carolyn Keene]] in the [[Nancy Drew stories]]. It is the 127th novel in the series.{{Cite book |url=https://www.simonandschuster.com/books/The-Case-of-the-Dangerous-Solution/Carolyn-Keene/Nancy-Drew/9781439113943 |title=The Case of the Dangerous Solution |date=2012-12-18 |isbn=978-1-4391-1394-3 |language=en}}

== Plot summary ==
Nancy's friend [[George Fayne|George]] delivers medicines from a local pharmacy — and her customers begin to fall ill. Nancy is convinced that foul play is involved. Someone is sabotaging the medication. As Nancy begins to investigate, she finds her own prescription full of danger. {{Cite book |last=Keene |first=Carolyn |url=https://www.google.com/books/edition/_/0RtAPwAACAAJ?hl=en&sa=X&ved=2ahUKEwiO-dqW2Y6UAxW0M2IAHbi5A0sQre8FegQICxAM |title=The Case of the Dangerous Solution |date=1995 |publisher=Turtleback |isbn=978-0-7857-7586-7 |language=en}}{{Nancy Drew}}
{{Authority control}}{{1990s-child-novel-stub}}{{1990s-ya-novel-stub}}