In medical jurisprudence, if the breastfeeding woman feels too weak to fast, or loses a lot of energy through breastfeeding, she is permitted not to fast.
If, on the other hand, she feels able to fast, she will be advised to take adaptogens and vitamin C in the morning, such as acerola, as well as a cordyceps capsule. She will add to this two or three spirulina tablets morning and evening, as well as royal jelly in ampoule form in the morning.
As for her breakfast, it should contain protein, such as farm eggs, honey, and "alhaba assawda" (black seed), which is very beneficial during breastfeeding. She may also add camel milk or plant-based milk (almond or coconut) to her meal.
Finally, she should make sure to stay well hydrated, in particular by drinking herbal teas throughout the evening, such as fennel tea.
What the science says: fasting
What published research says about the remedies mentioned above, for context — the studies address material causes, while healing belongs to Allah.
Fasting
Fasting, prescribed and then recommended by the Sunnah (Monday-Thursday, the white days), is studied today under the name intermittent fasting: a meta-analysis in the BMJ shows favorable effects on weight and cardiometabolic risk factors (BMJ, 2025), with an impact on appetite (Nutrients, 2023) and body composition (Diabetes Obes Metab, 2024). Precaution: people with diabetes on insulin, who are pregnant, breastfeeding, or in a vulnerable state should adapt their fasting with their doctor — Islam permits, and sometimes requires, not fasting in case of illness.
