Atenolol is typically absorbed relatively quickly after ingestion, usually within 1 to 2 hours. However, the exact timing can vary based on individual factors such as metabolism, stomach contents, and the formulation of the medication.
If you vomit 35 minutes after taking atenolol, it is possible that some of the medication may still be in your stomach, but a significant portion might already have been absorbed into your bloodstream. If you have concerns about whether you received the full dose or if you should take another dose, it's important to consult with a healthcare professional. They can provide advice based on your specific situation.