Non-nutritive injections into a vein or muscle do not break the fast according to what the Shaykh determined; as for nutritive injections, they have the ruling of food and so break the fast.
Evidence and explanation
The Shaykh distinguished between therapeutic non-nutritive injections and injections intended for nourishment.
Scholar referenced
Shaykh ‘Abd al-‘Aziz ibn Baz, may Allah have mercy on him
This editorial summary is based on the original source linked below and is not presented as a verbatim quotation from the scholar.
Source
Ramadan fatwas
Title of the original page (Arabic): فتاوى رمضانية
Shaykh ‘Abd al-‘Aziz ibn Baz, may Allah have mercy on him
Method noteThis is an editorial summary linked to a source, translated from the Arabic; independent review of its fidelity and of the translation is still pending. Personal cases whose rulings depend on individual facts should be presented with their details to qualified scholars.