It depends. The 5mg, 10mg, and 15mg were the doses tested and recommended as maintence doses. The 2.5mg is meant as a starter to reduce side effects but since most people don't see results with it the recommendation is that you only take it for 4 weeks. The 7.5mg and 12.5mg doses are meant as transitional doses but you can stay on them longer than 4 weeks.
Some doctors will go by the Lilly recommendations but I think more are allowing people to stay on the lowest dose providing benefits. That leaves your health insurance as the only other obstacle.
I was one of the rare people that saw results with 2.5mg but by the end of that first month I had plateaued. After 3 months at 5.0mg I've plateaued again and will probably move up to 7.5mg in the near future and stay on it as long as I can.
Some people like to go back to 2.5mg as their maintence dose after reaching their weight loss goals.
Some doctors will go by the Lilly recommendations but I think more are allowing people to stay on the lowest dose providing benefits. That leaves your health insurance as the only other obstacle.
There is a chart at https://zepbound.lilly.com/hcp/dosage
I was one of the rare people that saw results with 2.5mg but by the end of that first month I had plateaued. After 3 months at 5.0mg I've plateaued again and will probably move up to 7.5mg in the near future and stay on it as long as I can.
Some people like to go back to 2.5mg as their maintence dose after reaching their weight loss goals.