How Long Each Pen Lasts After Opening

After First UseMark Your Calendar
Ozempic
56 days
Room temp (≤86°F)
4 doses per pen
Most forgiving timeline
Wegovy
28 days
Room temp (≤77°F)
4 doses per pen
Stricter temp limit
Mounjaro
21 days
Room temp (≤86°F)
Single-dose pen
Use immediately after first use
Zepbound
21 days
Room temp (≤86°F)
Single-dose pen
Same as Mounjaro
Compounded Vials
28-30 days
Refrigerated
Varies by volume
Check your pharmacy

Why Tracking Expiration Matters

💰

$900+ Per Pen

At nearly $1,000 per pen, letting medication expire is expensive. Track every dose.

⚠️

Reduced Effectiveness

Expired or improperly stored medication may not work as well, slowing your progress.

🔬

Safety Concerns

Degraded peptides could potentially cause unexpected side effects or reactions.

How Shotlee Tracks Your Pens

  • 1. Log when you open a new pen: Shotlee calculates expiration based on your medication type
  • 2. See days remaining: Dashboard shows how many days until your pen expires
  • 3. Get expiration alerts: Push notifications when your pen is about to expire
  • 4. Track doses used: Know exactly how many doses remain in multi-dose pens
  • 5. Manage multiple pens: Track opened and unopened pens in your inventory

FAQ

Can I use Ozempic after 56 days?

Novo Nordisk recommends discarding after 56 days at room temperature. The medication may still work, but potency isn't guaranteed. When in doubt, don't risk it.

Why does Wegovy expire faster than Ozempic?

Wegovy has a stricter temperature limit (77°F vs 86°F) and shorter stability. Different formulations and concentrations affect stability.

Does the expiration date on the box matter?

Yes! The box date is for unopened, refrigerated pens. Once opened, the shorter "in-use" timeline applies regardless of the printed date.

Start Tracking Your Pen Expiration

Never waste expensive medication. Shotlee alerts you before your pen expires.

🚀 Start Tracking Free