Ranked #4 in BoulderUpdated July 2026
Onus IV Therapy + Longevity: Castle Rock
5.0(191)on GoogleIn-clinic
Onus IV Therapy + Longevity: Castle Rock is a Boulder IV therapy clinic with a 5-star rating across 191 Google reviews.
Not yet verifiedUpdated July 2026
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“First time ever using IV therapy and I couldn’t be more satisfied with this spot in Castle Rock! I was the first guest there and Megan was absolutely phenomenal! So warming, comforting, professional, friendly, funny, and efficient! I hav…”
“I recently was starting to come down with a bad cold and went in and got the rockstar mixture. Definitely helped me get through a busy weekend and activities and probably heal sooner very comfortable environment and friendly staff.”
“Look, I'm not the type of guy that hypes up on the latest social trends, but I am a huge fan of this place. I've been going for ~3yrs only when someone in my home gets sick or when I feel like I'm coming down with something. This week…”