This will not affect your fasting.

I will be needing to get an injection as part of my work placement in the nhs hospital. This is not a nutritional injection but for immunity against hepititus b. Will this invalidate my fast during Ramadan.

Fasting | June 19, 2015 1:28 pm
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My brother works in ship and stays in sea for few days so just wanted to know if it’s compulsory on him to fast or can he make up when he returns home.also let me know is it obligatory on him as he takes sea sickness pills and he comes in traveller category.
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I have a question regarding ramadan. Will Allah accept my fasting in ramadan, if I do sins in ramadan?