I couldn’t verify a Roblox-Isla-specific “tranq” duration from the available info, but in similar game contexts a tranquilizer effect is often around 10 minutes of in-game time or less, depending on the item and game version.

What to check

  • The exact effect can vary by game and update.
  • If “Isla” means a specific Roblox experience, the official game wiki or recent patch notes usually give the most reliable duration.
  • If you meant a different “tranq” item, the name or game title would narrow it down fast.

Related note

The search results that came up also showed unrelated uses of “tranq,” including a day-length page for a different Roblox game and non-game medical references, so they don’t confirm the Isla duration.

I can help narrow it down if you share the full game name or the item’s exact spelling.