It is most likely that the blessing of sahoor comes from a number of
things: it is following the Sunnah,differing from the People of the
Book, it gives one strength for worship, increases energy, wards off
the bad attitude that may result from being hungry, makes one give
charity to the one who asks at that time or joins him to eat, it
reminds oneto remember Allah and call upon Him at times when a
response is most likely, and reminds one toform the intention of
fasting for the one who forgot to do so before he went to bed.
Fath al-Baari, 4/140
Shaykh Muhammad ibn Saalih al-'Uthaymeen (may Allah have mercy onhim)
said, discussing the blessings of sahoor:
One of its blessings is thatit supplies nourishment tothe body
throughout the day and helps one to be patient in refraining from food
and drink, even during the long, hot days of summer, whereas when a
person is not fasting you will find him drinking five or six times a
day, and eating twice. But Allah has instilled blessing in sahoor, so
it makes the body able to cope with fasting. End quote.
Liqa' al-Baab al-Maftooh (Introduction to no. 223).
To sum up: there is nothing wrong with taking these tablets.
For more information on the permissibility of taking hormones for
sports at sahoor,
And Allah knows best.
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