Uploaded May 2023 | Updated September 2026, 3 weeks ago
Followup video added: youtu.be/R1NvnbmHf9U
This new video goes much deeper into the details of the pen, and how to make sure it doesn't get accidentally ejected.
The Mounjaro (Tirzepatide) injector pens are designed to give you a fixed dose, a full pen at a time. They charge the same price no matter what dose is in the pen, which is ridiculous. The 2.5mg pen is the same cost as the 15mg pen in most cases. So I got the 15mg version and I take them apart to make the smaller doses that I need.
I'm using 2.5mg every 3-4 days, so an effective dose of 5-6mg per week. This means one pen gives me over two weeks, cutting the cost to less than half. I'm doing it twice a week because the half-life of this drug is only 117 hours, or less than five days. This means that on a weekly dose, by day 5, you have less than half of it in your body. That seems bad to me, so by dosing twice a week I keep things more stable.
I've also used the generic lyophilized (dry) peptide powder that you have to reconstitute yourself, but had mixed results. I think vendors have different varying potency/efficacy, so I'm trying the real Mounjaro now to compare them. I don't know yet if there's a huge difference, but I had side effects right away from this dose, and my last few of the powder have had little effect, or not as quickly.
There is no medical advice given in this video in any way, just sharing what I have done. I'm an idiot. You shouldn't take medical advice from a rando on the internet. Do your own research and make your own decisions.
Tirzepatide is commonly used to treat type 2 diabetes, pre-diabetes, and to help with weight loss. There is also some evidence that it may help with rheumatoid arthritis, muscular sclerosis (MS), and similar immune system disorders. Currently, Mounjaro is only approved for T2D.
Supplies I use:
3ml #23 syringes for reconstitution. It’s not critical to use these, you can use the same syringes to do both jobs, I just find this convenient when adding 2ml/3ml of water.
amazon.com/gp/product/B0CTTY491G
0.3ml #31 syringes, ultra fine, slightly fragile with harder stoppers on some vials.
amazon.com/EasyTouch-Insulin-Syringe-Needle-16-Inch/dp/B07P2HV7XQ
0.3ml #30 syringes, fine, a little less fragile but still no discomfort for injection.
amazon.com/EasyTouch-Insulin-Syringe-Needle-16-Inch/dp/B07P3JKFKD
0.5ml #31 syringes, ultra fine with more capacity.
amazon.com/gp/product/B07P1GD7NK
1ml #29 syringes for injection of larger amounts. These are ok, but next time I’ll probably order shorter #30 or #31 needles.
amazon.com/gp/product/B07P11F21N?ie=UTF8&psc=1
B07P11F21N
Very nice travel and storage case. It can hold bac water if you want, or just a couple of reconstituted vials, depending on your needs, plus the syringes and alcohol pads. I’ve used it as carry-on and checked in, no issues, since airport staff are very familiar with diabetic needs.
amazon.com/gp/product/B07DHGP74F?ie=UTF8&psc=1
B07DHGP74F
Larger case with more space
amazon.com/gp/product/B0BJQDN13N
Sharps container for home. I don’t think this is critical, as the danger from syringes in the trash is extremely low, but they are cheap and make things easy.
amazon.com/gp/product/B01CUXWUB6?ie=UTF8&psc=1
B01CUXWUB6
Sharps container for travel. I don’t want to take liberties with another person’s home trash or hotel trash, so I always use these when I travel.
amazon.com/gp/product/B01EGJ9GFA?ie=UTF8&psc=1
B01EGJ9GFA
Empty 2ml vials, which I use for mixing down Mounjaro pens to a smaller dose. These are good if you’re mixing the 0.5ml pen with an additional 1ml of water.
amazon.com/gp/product/B0BBS1P8SH?ie=UTF8&psc=1
B0BBS1P8SH
Empty 1ml vials, for mixing a Mounjaro pen plus 0.5ml of water.
amazon.com/gp/product/B0BBS34D7Q?ie=UTF8&psc=1
B0BBS34D7Q
Followup video added: youtu.be/R1NvnbmHf9U
This new video goes much deeper into the details of the pen, and how to make sure it doesn't get accidentally ejected.
The Mounjaro (Tirzepatide) injector pens are designed to give you a fixed dose, a full pen at a time. They charge the same price no matter what dose is in the pen, which is ridiculous. The 2.5mg pen is the same cost as the 15mg pen in most cases. So I got the 15mg version and I take them apart to make the smaller doses that I need.
I'm using 2.5mg every 3-4 days, so an effective dose of 5-6mg per week. This means one pen gives me over two weeks, cutting the cost to less than half. I'm doing it twice a week because the half-life of this drug is only 117 hours, or less than five days. This means that on a weekly dose, by day 5, you have less than half of it in your body. That seems bad to me, so by dosing twice a week I keep things more stable.
I've also used the generic lyophilized (dry) peptide powder that you have to reconstitute yourself, but had mixed results. I think vendors have different varying potency/efficacy, so I'm trying the real Mounjaro now to compare them. I don't know yet if there's a huge difference, but I had side effects right away from this dose, and my last few of the powder have had little effect, or not as quickly.
There is no medical advice given in this video in any way, just sharing what I have done. I'm an idiot. You shouldn't take medical advice from a rando on the internet. Do your own research and make your own decisions.
Tirzepatide is commonly used to treat type 2 diabetes, pre-diabetes, and to help with weight loss. There is also some evidence that it may help with rheumatoid arthritis, muscular sclerosis (MS), and similar immune system disorders. Currently, Mounjaro is only approved for T2D.
Supplies I use:
3ml #23 syringes for reconstitution. It’s not critical to use these, you can use the same syringes to do both jobs, I just find this convenient when adding 2ml/3ml of water.
amazon.com/gp/product/B0CTTY491G
0.3ml #31 syringes, ultra fine, slightly fragile with harder stoppers on some vials.
amazon.com/EasyTouch-Insulin-Syringe-Needle-16-Inch/dp/B07P2HV7XQ
0.3ml #30 syringes, fine, a little less fragile but still no discomfort for injection.
amazon.com/EasyTouch-Insulin-Syringe-Needle-16-Inch/dp/B07P3JKFKD
0.5ml #31 syringes, ultra fine with more capacity.
amazon.com/gp/product/B07P1GD7NK
1ml #29 syringes for injection of larger amounts. These are ok, but next time I’ll probably order shorter #30 or #31 needles.
amazon.com/gp/product/B07P11F21N?ie=UTF8&psc=1
B07P11F21N
Very nice travel and storage case. It can hold bac water if you want, or just a couple of reconstituted vials, depending on your needs, plus the syringes and alcohol pads. I’ve used it as carry-on and checked in, no issues, since airport staff are very familiar with diabetic needs.
amazon.com/gp/product/B07DHGP74F?ie=UTF8&psc=1
B07DHGP74F
Larger case with more space
amazon.com/gp/product/B0BJQDN13N
Sharps container for home. I don’t think this is critical, as the danger from syringes in the trash is extremely low, but they are cheap and make things easy.
amazon.com/gp/product/B01CUXWUB6?ie=UTF8&psc=1
B01CUXWUB6
Sharps container for travel. I don’t want to take liberties with another person’s home trash or hotel trash, so I always use these when I travel.
amazon.com/gp/product/B01EGJ9GFA?ie=UTF8&psc=1
B01EGJ9GFA
Empty 2ml vials, which I use for mixing down Mounjaro pens to a smaller dose. These are good if you’re mixing the 0.5ml pen with an additional 1ml of water.
amazon.com/gp/product/B0BBS1P8SH?ie=UTF8&psc=1
B0BBS1P8SH
Empty 1ml vials, for mixing a Mounjaro pen plus 0.5ml of water.
amazon.com/gp/product/B0BBS34D7Q?ie=UTF8&psc=1
B0BBS34D7Q
