Can GLP-1 cause thyroid cancer?

The boxed warning is based on rodent studies showing medullary thyroid carcinoma (MTC) in mice and rats. No human cases have been attributed to GLP-1 use despite 10+ years post-approval surveillance.

Do GLP-1 medications affect mood or depression?

Mixed evidence. The FDA label has a precaution but no boxed warning. Some patients report improved mood (likely from weight loss + glycemic control); a smaller subset reports increased anxiety or low mood, especially in early weeks. Pre-existing depression history is a flag for closer monitoring.

How do you store GLP-1 pens?

Refrigerate unopened pens at 36-46°F (2-8°C) until first use. Once started, room temperature ≤86°F (30°C) is fine for up to 28 days. Never freeze; never store in direct sunlight; do not store in checked luggage.

How do you inject a GLP-1 safely?

Rotate sites between abdomen (≥2 inches from navel), front of thigh, and back of upper arm. Inject at room temperature (cold pens sting). Pinch a fold of skin, insert at 90°, hold 6 seconds after the click, withdraw straight. Dispose in a sharps container.

How does Wegovy compare to Saxenda?

Both are GLP-1 agonists from Novo Nordisk. Wegovy (semaglutide, weekly) produces ~15% mean weight loss; Saxenda (liraglutide, daily) produces ~6-8%. Wegovy is also cheaper per kg-lost, more convenient, and has cardiovascular outcome data (SELECT trial). Saxenda was first approved for adolescents (2020); Wegovy followed in 2022 — both are available for ages 12-17.

Saxenda reference

How to store Saxenda

Refrigerate unopened pens at 36–46°F. After first use: ≤86°F or refrigerated, discard after 30 days.

Detailed guidance

Refrigerate unopened pens at 36–46°F (2–8°C). Never freeze.
After first use: ≤86°F (30°C) or refrigerated; discard after 30 days.
Carry-on only when traveling.

Source: Saxenda FDA prescribing information

Common questions readers ask

Can GLP-1 cause thyroid cancer?: The boxed warning is based on rodent studies showing medullary thyroid carcinoma (MTC) in mice and rats. No human cases have been attributed to GLP-1 use despite 10+ years post-approval surveillance.
Do GLP-1 medications affect mood or depression?: Mixed evidence. The FDA label has a precaution but no boxed warning. Some patients report improved mood (likely from weight loss + glycemic control); a smaller subset reports increased anxiety or low mood, especially in early weeks. Pre-existing depression history is a flag for closer monitoring.
How do you store GLP-1 pens?: Refrigerate unopened pens at 36-46°F (2-8°C) until first use. Once started, room temperature ≤86°F (30°C) is fine for up to 28 days. Never freeze; never store in direct sunlight; do not store in checked luggage.
How do you inject a GLP-1 safely?: Rotate sites between abdomen (≥2 inches from navel), front of thigh, and back of upper arm. Inject at room temperature (cold pens sting). Pinch a fold of skin, insert at 90°, hold 6 seconds after the click, withdraw straight. Dispose in a sharps container.
How does Wegovy compare to Saxenda?: Both are GLP-1 agonists from Novo Nordisk. Wegovy (semaglutide, weekly) produces ~15% mean weight loss; Saxenda (liraglutide, daily) produces ~6-8%. Wegovy is also cheaper per kg-lost, more convenient, and has cardiovascular outcome data (SELECT trial). Saxenda was first approved for adolescents (2020); Wegovy followed in 2022 — both are available for ages 12-17.

Next step

See the full Saxenda drug profile — efficacy, side effects, cost, and provider options.

See full Saxenda profile

Editorial information based on FDA prescribing data. Not personal medical advice. For urgent symptoms call your prescriber or 911.

How to store Saxenda

Refrigerate unopened pens at 36–46°F. After first use: ≤86°F or refrigerated, discard after 30 days.

Detailed guidance

Refrigerate unopened pens at 36–46°F (2–8°C). Never freeze.
After first use: ≤86°F (30°C) or refrigerated; discard after 30 days.
Carry-on only when traveling.

Common questions readers ask

Can GLP-1 cause thyroid cancer?: The boxed warning is based on rodent studies showing medullary thyroid carcinoma (MTC) in mice and rats. No human cases have been attributed to GLP-1 use despite 10+ years post-approval surveillance.
Do GLP-1 medications affect mood or depression?: Mixed evidence. The FDA label has a precaution but no boxed warning. Some patients report improved mood (likely from weight loss + glycemic control); a smaller subset reports increased anxiety or low mood, especially in early weeks. Pre-existing depression history is a flag for closer monitoring.
How do you store GLP-1 pens?: Refrigerate unopened pens at 36-46°F (2-8°C) until first use. Once started, room temperature ≤86°F (30°C) is fine for up to 28 days. Never freeze; never store in direct sunlight; do not store in checked luggage.
How do you inject a GLP-1 safely?: Rotate sites between abdomen (≥2 inches from navel), front of thigh, and back of upper arm. Inject at room temperature (cold pens sting). Pinch a fold of skin, insert at 90°, hold 6 seconds after the click, withdraw straight. Dispose in a sharps container.
How does Wegovy compare to Saxenda?: Both are GLP-1 agonists from Novo Nordisk. Wegovy (semaglutide, weekly) produces ~15% mean weight loss; Saxenda (liraglutide, daily) produces ~6-8%. Wegovy is also cheaper per kg-lost, more convenient, and has cardiovascular outcome data (SELECT trial). Saxenda was first approved for adolescents (2020); Wegovy followed in 2022 — both are available for ages 12-17.

Next step

See the full Saxenda drug profile — efficacy, side effects, cost, and provider options.

See full Saxenda profile

Editorial information based on FDA prescribing data. Not personal medical advice. For urgent symptoms call your prescriber or 911.