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Doxycycline: Doxycycline for 2-4 weeks is recommended if penicillin cannot be given, or sometimes ceftriaxone. However, penicillin is by far the best drug. If you had a severe penicillin allergy in the past, then probably penicillin should be avoided. Otherwise, it still might be the best choice for you. Discuss it with your doctor or, even better, an infectious diseases or STD specialist. ...Read more
What do you suggest if my friend just took an overdose on 15 penicillin vk tablets 250mg, what will happen and what should I do?
Ok: Should be safe. Good luckGet a more detailed answer ›
Question unclear: If you mean how long to begin to have improvement of symptoms it may take some time because they are often the result of the body's reaction to the organism. Also depends upon what the pcn is treating. If strep throat, never. Pcn begins to inhibit the growth of bacteria and then the wbcs help finish the job. This is complex. ...Read more
Varies: Some reactions are mild, such as hives alone. Others are more serious, with breathing problems and blood pressure drop. Some reactions (like some kinds of rashes) are not actually allergies, but different reactions that may or may not recur when you take the medicine. While it may be easier to just avoid penicillin, if it's important, you can find out if you have a "true" allergy by testing. ...Read moreSee 1 more doctor answer
No: Anaphylactic shock can only occur while you are actively exposed to the thing you are allergic too. It will not happen months after an exposure. It is more likey that an accidental exposure occurred with out the person realizing it.If they had a reaction with out a known exposure. ...Read moreSee 1 more doctor answer
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