Good day! I am a student nurse from the XXXXXX. My friend texted me and reported a case of allergic reaction due to her ingestion of chicken (her allergen ) the night before her text. She reported blisters appearing in her feet . There is also wound and pus on the site. She reported not being able to take antihistamine ASAP because she did not notice that her supply s up and the pharmacy is far from her place. I told her to take antihistamine ASAP (which she did). However she texted me again saying she bought penicillin tablets (apparently without doctor s order). She asked me how much dosage and period of days she ll need to take the med. I do not want to give a wrong dosage. I am also limited to the information I gave above (i don t know the extent of skin reaction). Please do give me advise on this. Is penicillin the proper drug? What dose will I tell her? I don t know if she s allergic to the drug (I will ask her), but if she is what drug is appropriate and what is the dosage and timing? Please do reply. She is waiting for my reply. Thank you and God bless!