Can he work at night and not fast by day because of taking medicine?

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He is sick and has to take medicine during the day
If a woman makes a mistake about when she becomes pure following menstruation, is she sinning?

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Related Answers:
They work in difficult jobs such as smelting metals
Making up Ramadaan fasts missed because of childbirth
They put him under anaesthetic when he was fasting, then make him inhale something to wake him up
He is sick and has to take medicine during the day
If a woman makes a mistake about when she becomes pure following menstruation, is she sinning?

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