Pharmaceutical companies make them.
Antibiotics don't delay periods but if you are on the pill you risk pregnancy since the antibiotics makes the pills not work.
it makes em better
When bacteria mutate to adapt to the body, which makes it harder for scientists to create antibiotics for them, as some people stop using antibiotics before the time which the doctors tell them to. This makes the bacteria become stronger against antibiotics.
no
Antibiotics will make them less effective or not work at all.
Antibiotics are known for decreasing the effectiveness of birth control so use a back-up method (i.e. condoms) during the time you are taking antibiotics and for a week or two after stopping the antibiotics.
Because most gastric ulcers are caused by bacteria infection. which makes it easier for antibiotics to fight against this bacterias.
Louis Pasteur
There is not an antibiotic that comes up as morphine. You can take morphine with an antibiotic, but it is wise to wait at least an hour in between if you have a stomach ache with the antibiotics.
No it can not.
Because most gastric ulcers are caused by bacteria infection. which makes it easier for antibiotics to fight against this bacterias.