2-minute questionnaire
A few questions about your health, current medications, and what you need propranolol for. Done from your phone, on your time.
Propranolol blocks the adrenaline response behind racing hearts, shaky hands, and dry mouth. One tablet, one hour before it matters. Licensed clinician review, prescription, and medication included. Delivered.

A 2-minute questionnaire, private physician review, and propranolol shipped to keep on hand for whenever the moment arrives. No appointments, no in-person visit.
A few questions about your health, current medications, and what you need propranolol for. Done from your phone, on your time.
A licensed US physician reviews your case and confirms propranolol is appropriate. If they have questions, they'll message you. Most reviews complete within 1 business day.
Propranolol ships in plain, unmarked packaging. Arrives in 3 to 5 business days. Keep the bottle on hand for whenever you need it.
Take a tablet when you have something coming up. Onset is 30 to 60 minutes, peak effect at 60 to 90 minutes, lasts 3 to 4 hours. No daily dosing, no buildup.
Propranolol for performance anxiety comes in four doses. 10mg and 20mg are self-serve through the questionnaire. 40mg and 80mg need more clinical tailoring and are available with membership. All work the same way: one tablet before the event, only when you need it.
10 mg as needed
Gentlest effective dose · take 60 to 90 min before the event
20 mg as needed
Already tried 10mg and need a stronger effect?
Take one tablet 60 to 90 minutes before the moment. Propranolol blocks adrenaline at the heart and the body, so the stress response cannot show up.
Propranolol has been used off-label for performance anxiety since 1982, when a landmark double-blind trial in musicians showed it eliminated the physical impediments to performance and improved how performers were rated by critics.
Three Instalab patients in their own words. Composites based on real patient experiences.
“My bow hand used to shake the moment I sat down. With 10mg an hour before, the tremor never started. I could actually play the music I had been practicing.”
“I do not get nervous in the meeting room. I get nervous walking to it. Heart pounding, voice tight. One tablet 90 minutes before and that physical loop never starts. I sound like myself.”
“I tested 10mg the weekend before to see how my body would feel. On the day, I took one 90 minutes before the toast. No shaking, no voice cracks. I actually got to be present.”
Most patients feel the difference the first time they use it. Best practice: take your first dose on a low-stakes day to learn how your body responds.
Propranolol is a prescription medicine. Use for performance anxiety is off-label. Do not take propranolol if you have asthma, severe heart conditions, or a very slow heart rate. Common side effects include dizziness, fatigue, and cold hands or feet.
Answer a few questions. A physician reviews your case. If propranolol is appropriate, your prescription goes out in discreet packaging.
No commitment to treatment.