Procedure prep
Fasting Before a Vasectomy
A vasectomy is a quick procedure for permanent male contraception. The great majority are done under local anesthetic only, which means many men don't need to fast at all. The deciding factor is your anesthesia type.
Fasting for this procedure
→ Get your exact fasting times with the calculator
Medicines to check
- Blood thinners and aspirin. These raise the risk of bruising/bleeding (scrotal hematoma); ask whether to pause them and for how long. See medications to stop.
- Anti-inflammatories (ibuprofen): ask whether to avoid them just before, as they can add to bruising.
- Blood pressure and regular medicines, usually continued; confirm.
When this surgery may be delayed
- A skin infection or rash in the groin/scrotal area
- Fever or feeling unwell
- If having sedation: you ate or drank outside your fasting window
Reports & documents to carry
- Photo ID and any consent or referral paperwork
- Tight supportive underwear or a jockstrap to wear afterward
- Someone to drive you if you're having sedation
What to ask your anesthesia team
- Is my vasectomy under local anesthetic only, or sedation/general?
- If it's local only, can I eat normally and drive myself home?
- Should I pause aspirin, blood thinners, or ibuprofen first?
- How long until the vasectomy is reliable (and a follow-up sperm test)?
Your prep checklist
Tick things off as you sort them. Saved on this device only, nothing is sent anywhere.
A general guide, your hospital's own instructions always come first.
Frequently asked questions
Do I have to fast before a vasectomy?
Usually not. Most vasectomies are done under local anesthetic only, and many clinics actually suggest a normal light meal beforehand so you don't feel lightheaded. You only need to fast if you've chosen sedation or general anesthesia.
Can I drive myself home after a vasectomy?
If it was done under local anesthetic only, many men can drive themselves: though it's more comfortable to have a lift. If you had sedation or general anesthesia, you must not drive and need a responsible adult with you.
Should I stop aspirin or ibuprofen before a vasectomy?
Blood thinners, aspirin and anti-inflammatories can increase bruising and the risk of a scrotal hematoma. Ask your doctor whether to pause them and for how long, don't stop prescribed blood thinners without advice.