Final answer:
Doxycycline is an antibiotic with the recommended prophylactic dose for malaria being 100mg once daily, starting 1-2 days before travel and to be continued for 4 weeks after leaving the malaria transmission area. Care should be taken to avoid potential side effects.
Step-by-step explanation:
Doxycycline is an antibiotic used to treat various bacterial infections, including Lyme disease. The specific dosage of doxycycline for malaria prophylaxis is typically 100mg PO, once daily, starting 1-2 days before travel and continuing for 4 weeks after leaving the area at risk of malaria transmission. It's crucial to follow the healthcare provider's instructions to ensure the best chance of prevention. Note that doxycycline should be used with caution due to potential side effects such as phototoxicity, the possibility of permanent discoloration of developing teeth, and liver toxicity, especially at high doses or in patients with pre-existing kidney impairment.