Here is an interesting read up on Doxy, found it on the Patts forum https://www.queerhealth.info/projects/doxypep  

I read this and will continue to have the girls bag it.  That's it.  Easy for me to say being bottom.  " Common side effects of doxycycline include nausea, vomiting, diarrhea, loss of appetite, and increased sun sensitivity (sunburn). It can also cause esophageal irritation (painful swallowing), vaginal or oral thrush, and temporary tooth discoloration in children. Serious, rare effects include severe skin reactions, high intracranial pressure (headache/blurred vision), and C. diff colitis.    Common Side Effects Yeast Infections: Oral or vaginal thrush/itching due to disruption of natural flora. Skin Rash or Itching: Mild to moderate allergic skin reactions.  Gastrointestinal Distress: Nausea, vomiting, diarrhea, and decreased appetite are common. Sun Sensitivity: Increased risk of severe sunburn, redness, or skin irritation. Esophageal Irritation: Throat or chest discomfort/pain when swallowing, known as pill esophagitis.   Serious Side Effects (Seek Medical Attention) Intracranial Hypertension: Severe headaches, dizziness, or blurred/double vision. Severe Skin Reactions: Blistering, peeling, or rashes with fever or swelling. Severe Diarrhea: Watery or bloody stools (potential C. diff colitis). Allergic Reactions: Swelling of the face, tongue, or throat and difficulty breathing. Tooth Discoloration: Permanent gray/yellow staining if used by children under 8.    Prevention and Tips Take with water: Take with a full glass of water while standing or sitting upright. Avoid lying down: Do not lie down for at least 30–60 minutes after taking it to prevent esophageal irritation. Sun Protection: Use sunscreen and protective clothing to manage photosensitivity. Food interaction: Take with food or milk if it causes stomach upset, although some preparations suggest avoiding dairy for best absorption (check your prescription)

I took daily PREP and DoxyPep on my three last trips and I eventually realized that the DoxyPep over multiple days fucked up my gut bacteria and I had borderline diarrhea and struggled to eat and digest food (nausea). To me PREP is a no brainier as it virtually eliminates the risk of a treatable but still incurable disease (AIDS), whereas DoxyPep reduces the risk of getting some curable bacterial infections - to me to side effects of DoxyPep outweighed the benefits, so next trip I will take the risk and keep a healthier gut and just take daily PREP.  I may have some Doxy with me and take it in the event that I think I may have been exposed but hopefully i I sense something not right I will refrain from contact - that is so long as little Steve doesn't take over.    

Are there any pharmacies in bangkok that sell PrEP OTC? I already took a test several months after my last encounter and don't feel like having to either wait multiple hours in a clinic or pay Pulse's 3x upcharge with their testing+consultation fees.

Ouch...talk about misinformed medical advice. First off, if a person (LB or whoever) is HIV+ and is regularly taking an approved ART drug, you are exceedingly unlikely to be able to be infected when having sex with them. If a person is on an approved PrEP drug, ditto. Second, use a condom, regardless. Not only are condoms quite effective against HIV, they are also quite effective against a long list of other sexually transmitted diseases that HIV drugs provide zero protection against, and some of those diseases are pretty nasty in their own right. And if you're using condoms you don't have to worry about the honesty of your partner. Third, no, people should not be on PrEP (not PReP, get the acronym right, dude!) no matter what. If you're using condoms it makes no sense. PrEP drugs are pretty potent and not suited for everyone. Those who might want to consider PrEP as an option are those who drink to excess or take party drugs when playing with the LBs, and might stupidly go bareback under those conditions. Or those who plan on rolling the dice and going bareback.