STI, HIV & PrEP
PrEP in Thailand: Price, Where to Get It and Online PrEP with Nationwide Delivery
Monthly cost, every way to get PrEP in Thailand and online PrEP with discreet delivery.
Knowledge Library · English
Sexual health,
Sexual health,
explained in plain, everyday language
166 articles from Dr. Kris's consulting room in Surat Thani, Thailand — up to date with current medical guidance, easy to read, and free of judgement. For residents, expats and visitors in Surat Thani, Koh Samui, Koh Phangan and beyond.
New guides
See allJust published: PrEP and gender-affirming hormonesNEW
Prices, where to get it and how to start safely with a doctor.
STI, HIV & PrEP
Free PrEP vs Clinic PrEP in Thailand: Which Suits You?
Who can get PrEP free, and when a clinic is the better fit.
LGBTQ+ & Gender-Affirming Hormones
Gale (Cyproterone 50 mg) Dosage: How Many Tablets a Day? Blood Targets and Monthly Cost
Is 1–2 tablets a day too much? Guideline doses, blood targets and monthly cost by dose.
Case Stories
See allCase stories from Dr. Kris
Stories from the consulting room, fully anonymised, shared to help you understand conditions and care through real life.
Case Stories
Dr. Kris Case: A Much Younger Partner, Hormones and Erections
A man in his 50s who looked after himself well, but worried he couldn't keep up with his much younger partner. This case taught me that before talking about hormones, you have to listen to the fear first.
Case Stories
Dr. Kris Case: Being a Father and Being a Partner After a Baby
After a baby, a couple's private time disappears and sex becomes rushed, leading to premature ejaculation and erection problems. This case started to improve by separating the role of father from the role of partner.
Case Stories
Dr. Kris Case: Understanding Your Sexual Response Cycle Can Help
He could get an erection at first, but it gradually faded and he couldn't reach orgasm. This case improved once he understood that body and mind have to move together.
Case Stories
Dr. Kris Case: "I Have Herpes" — Telling a Partner and Living With It
The day he found out he had herpes, he thought his love life was over. But herpes is a very common virus and it can be managed. This case is about the courage to tell the truth and learning together.
Case Stories
Dr. Kris Case: My First Patient, a Man of 80, and Sex in Later Life
My very first sexual health case was a man of about 80, who taught me that the wish for closeness does not disappear with age.
Case Stories
Dr. Kris Case: Sex Isn't Perfect Like the Movies, and Needn't Be
In films, everything is ready and perfect. In real life, the couples I see face the same issues again and again, and most of the time it doesn't mean they love each other any less.
Case Stories
Dr. Kris Case: She Was So Quiet I Didn't Know How She Felt
He really wanted his girlfriend to enjoy their intimacy, but she was so quiet he didn't know how she felt. This case is about communication, consent and truly listening to the other person.
Case Stories
Dr. Kris Case: Erection Problems When Trying for a Baby
He loved his wife and really wanted a baby, but on the days timed for ovulation he couldn't get an erection. This case shows that sex can't be ordered on command, and that trying too hard can become pressure.
Topics
Choose a topic
41
Men's Sexual Health
Erectile dysfunction, premature ejaculation, testosterone and TRT, explained plainly.
12Women's Sexual Health
Desire, pain with sex, vaginal dryness and hormones in women.
18LGBTQ+ & Gender-Affirming Care
Gender identity, gender-affirming hormone therapy and judgement-free care.
33STI, HIV & PrEP
Testing, prevention and treatment of sexually transmitted infections, PrEP and PEP.
12Love & Relationships
Couples, communication and a sex life that feels good.
19Sexual Behavior & Paraphilias
Diverse interests, conditions that need care, and how to get confidential help.
19Wellness & Vaccines
Nutrition, vitamins, health check-ups and adult vaccines.
4Family & Palliative Care
Family medicine, living wills and palliative care.
Series · DSM-5-TR
See topicParaphilic disorders series
Diverse sexual interests versus conditions that deserve care — academic and non-judgemental.
- 01Paraphilic Disorders: When a Sexual Interest Needs Care
- 02Voyeuristic Disorder: Diagnosis, Harm and Treatment
- 03Exhibitionistic Disorder: Wanting to Be Seen vs Exposing Others
- 04Frotteuristic Disorder: Understanding, Prevention and Treatment
- 05Sexual Masochism Disorder and Consensual BDSM: Where Is the Line?
- 06Sexual Sadism Disorder: How BDSM Differs from Sexual Violence
- 07Pedophilic Disorder: Prevention and How to Get Confidential Help
- 08Fetishes and Fetishistic Disorder: When Is a Fetish a Problem?
- 09Transvestic Disorder and How It Differs from Being Transgender
- 10Other Paraphilic Disorders and Compulsive Sexual Behaviour Disorder
Consult Dr. Kris
Confidential consultation with a clinical sexologist
Say what you haven't been able to say to anyone. We listen, assess and plan — or refer when needed.
All articles
All articles
Men's Sexual Health
- Men's Sexual Health: What It Covers and Where to Start
- Erectile Dysfunction (ED): Causes, Tests and Treatment
- No More Morning Erections? What It Means and When to Get Checked
- What Causes Erection Problems? Including Vascular ED
- How Hard Is Normal? The Erection Hardness Score (EHS)
- IIEF-5 Test: Check Your Erectile Function Yourself
- The ADAM Questionnaire: A Self-Check for Low Testosterone Symptoms
- Tadalafil (Cialis): How It Works, How Long It Lasts, When to Take It
- Tadalafil 10 mg vs 20 mg: What's the Difference?
- Daily vs On-Demand Tadalafil: Which Should You Choose?
- Sildenafil 50 mg or 100 mg: Which Dose Suits Whom?
- Tadalafil vs Sildenafil: How PDE5 Inhibitors Differ
- Erectile Dysfunction Treatment and Tadalafil in Surat Thani and Koh Samui
- Does PRP Work for Erectile Dysfunction? What the Evidence Says
- Stress, Relaxation and Erections (and the Chakra Myth)
- When Antidepressants Affect Your Sex Life: What You Can Do
- Do Herbs Really Help Sexual Health? What the Evidence Says
- Premature Ejaculation (PE): Causes, Exercises and Treatment
- Sexual Performance Anxiety: The Cycle, Causes and What Helps
- Death Grip: Masturbation Style, Delayed Ejaculation and Partnered ED
- Dapoxetine (Priligy) for Premature Ejaculation: Using It Safely
- Delayed or Absent Ejaculation: Causes and How to Manage It
- Penile Nerve Hypersensitivity: Burning or Numbness After an STI Scare
- Problems After Penile Filler Injections: What to Do
- Semen Analysis: Who Should Test and How to Read the Results
- Testosterone: What It Does, Normal Levels and What Men Should Know
- Symptoms of Low Testosterone: How to Recognise Them
- Depression or Low Testosterone? How to Tell Them Apart
- Hormone Imbalance in Men: Testosterone, Oestrogen and Aromatase
- What Is TRT? Who It Suits, Who Should Avoid It, How to Start Safely
- Blood Tests Before Starting TRT and During Follow-Up
- TRT Side Effects: What to Know and How to Monitor Safely
- TRT Timeline: When Your Body Changes After Starting Testosterone
- Can TRT Build Muscle? How Much It Helps and How to Build Muscle Right
- Testosterone Injections vs Gel (AndroGel): Differences and Choosing
- Test E vs Test U (Nebido): How They Differ and Which to Choose
- Anabolic Steroids and PEDs: Risks and Recovery After Stopping
- Testosterone, Diabetes, Blood Pressure and NCDs: Can TRT Help?
- How to Support Testosterone with Sleep, Food and Exercise: What Works
- What Is SHBG, and Why Read It Alongside Your Testosterone?
- DHEA and Pregnenolone: What to Know Before Taking Hormone Supplements
Women's Sexual Health
- Women's Sexual Health: Common Problems and Where to Start
- Low Sexual Desire (HSDD) in Women and Men: Causes and Care
- FSIAD: Female Sexual Interest/Arousal Disorder Explained
- Testosterone for Women with Low Sexual Desire: When and How Safe?
- Vaginal Dryness (GSM): Causes, Symptoms and Treatments That Work
- Genito-Pelvic Pain/Penetration Disorder (GPPPD): DSM-5-TR Explained
- Painful Sex and Vaginismus (GPPPD): Causes and Treatment
- Difficulty Reaching Orgasm in Women (Female Orgasmic Disorder)
- Menopause and Menopausal Hormone Therapy (MHT): Who It Suits, How Safe
- Sex Toys and Masturbation, Safely: A Shame-Free Health Guide
- A Practical Guide to Choosing and Using Sex Toys Safely
- Body Image and Confidence After Childbirth, and a Changed Sex Life
LGBTQ+ & Gender-Affirming Care
- LGBTQ+ Health Guide: Testing, Prevention and Mental Health
- What Is Gender Identity? Gender as a Spectrum and Its 4 Axes
- Non-binary, Agender and Pangender: What They Mean and How They Differ
- Genderless Fashion: Gender Expression Is Freedom
- Tops Don't Have to Be Masc: Sexual Roles, Personality and Real Appeal
- Gender-Affirming Hormone Therapy (GAHT): Starting Safely, Step by Step
- Blood Tests Before Gender-Affirming Hormones: What to Test and When
- Feminising Hormone Therapy (MTF): Steps, Medicines and Safe Monitoring
- Trans Women's Hormone Regimens: Oral, Gel or Injectable Estrogen?
- When Will My Skin Soften? A Feminising Hormone Timeline
- Finasteride: Uses in Trans Women, Trans Men and Hair Loss
- Masculinising Hormone Therapy (FTM): Starting Testosterone Safely
- Testosterone Side Effects in Trans Men and How to Stay Safe
- Trans Men After Oophorectomy: Do You Still Need Hormones?
- Letters Before Gender-Affirming Surgery: SOC-8 and Thai Criteria
- Anal Cancer Screening: Anal Pap and HPV DNA, Who and How
- Surat Pride and Safe Spaces for LGBTQ+ People in Surat Thani
- Marriage Equality in Thailand: Rights for Every Couple, and Health
STI, HIV & PrEP
- Common STIs: Symptoms, Testing and Prevention
- The 14-Pathogen PCR STI Test: What It Detects and How to Read It
- Premarital Blood Tests and Couples STI Testing: What to Test
- HIV Self-Test at Home and Fingerstick Tests: How Accurate Are They?
- Syphilis: Symptoms by Stage, Blood Tests and What to Do If Positive
- Syphilis Treatment: How Many Injections and RPR Follow-Up Tests
- Gonorrhea: Symptoms, Testing, Treatment and Drug Resistance
- Chlamydia: Symptoms, Testing, Treatment and Why Many People Don't Know They Have It
- Genital Herpes: Treatment, Why It Comes Back and Living Well With It
- HPV Vaccine for Women and Men: How Many Doses, What Age, Who Benefits
- PrEP vs PEP: What Is the Difference, Which to Choose and When
- PrEP for HIV Prevention: Who It Suits, How to Take It, How to Start
- On-Demand PrEP (2-1-1): How to Take It, Who It Suits, Who Should Not
- Injectable PrEP: Cabotegravir and Lenacapavir, Available in Thailand?
- PEP: Emergency HIV Medicine After Exposure, Start Within 72 Hours
- Just Had an HIV Exposure? What to Do From the First Hour to 3 Months
- Doxy-PEP: Doxycycline After Sex to Prevent Syphilis and Chlamydia
- Do PrEP and PEP Brands Differ? Acriptega, Kocitaf and Generics
- Online PrEP and PEP Through Telemedicine: How It Works, Is It Safe?
- PrEP & PEP in Surat Thani, Koh Samui and Koh Phangan: How to Get It
- Lubricant Matters More Than You Think: Choosing a Safe Lube
- What Is HIV, How Is It Spread, and How Is It Different From AIDS?
- HIV FAQ: The 10 Questions I Am Asked Most Often
- HIV Treatment Explained: Antiretrovirals and the First-Line TLD Pill
- U=U: Undetectable = Untransmittable, and Do You Still Need Condoms?
- What Is CD4? Opportunistic Infections (OI) in People With HIV
- HIV Life Expectancy: Living a Long Life With Treatment
- Fasting for an HIV Test? Window Period and Reliable Negative Results
- Can You Have Children With HIV? Planning Safely for Baby and Partner
- Living With HIV Confidently: Positive Attitudes and Judgment-Free Care
- STI Anxiety: Obsessive Worry After a Sexual Risk and How to Break It
- STI Guilt: How Couples Can Stop Blaming Each Other
- What Is Sex Work? Concepts, Rights, Health and Harm Reduction
Love & Relationships
- Love and Healthy Relationships: Understanding Love and Warning Signs
- Common Couple Problems and How to Talk So You Understand Each Other
- Sensate Focus: Rebuilding Intimacy for Couples, the Right Way
- Sensate Focus Exercises Step by Step: A Practical Guide for Couples
- Sexual Fantasies: Are They Normal, and How to Talk to Your Partner
- Family Therapy and Family Conferences: How They Help
- Art Therapy: How It Helps the Mind and Who It Suits
- The Enneagram: 9 Personality Types for You and Your Partner
- When Your Partner Is a Sex Creator or Adult (18+) Content Creator
- What Makes a Man Attractive? More Than Looks and Muscles
- Mindful Sex: How Being Present Can Improve Your Sex Life
- My Partner Has an STI: What to Do, Step by Step
Sexual Behavior & Paraphilias
- Paraphilic Disorders: When a Sexual Interest Needs Care
- Voyeuristic Disorder: Diagnosis, Harm and Treatment
- Exhibitionistic Disorder: Wanting to Be Seen vs Exposing Others
- Frotteuristic Disorder: Understanding, Prevention and Treatment
- Sexual Masochism Disorder and Consensual BDSM: Where Is the Line?
- Sexual Sadism Disorder: How BDSM Differs from Sexual Violence
- Pedophilic Disorder: Prevention and How to Get Confidential Help
- Fetishes and Fetishistic Disorder: When Is a Fetish a Problem?
- Transvestic Disorder and How It Differs from Being Transgender
- Other Paraphilic Disorders and Compulsive Sexual Behaviour Disorder
- When to See a Clinical Sexologist, and What You Can Talk About
- What Is Chemsex? Risks and Non-Judgmental Harm Reduction
- Crystal Meth, Yaba, Ketamine and GHB in Chemsex: Risks and Danger Signs
- Cannabis and Sex: Evidence on Desire, Erections and the Risks
- Porn Addiction or Compulsive Sexual Behaviour Disorder? A Guide
- What Are Poppers? Dangers and the Medicines You Must Never Mix
- Group Sex and Sex Outside the Home: Consent and Safety
- Sex Worker Health and What a Friendly Clinic Looks Like
- Sex Work Law in Thailand: The 1996 Act and the New Draft Bill
Wellness & Vaccines
- Wellness and Preventive Health: Start Before You Get Sick
- Anal Health 101: Caring for Your Anus Without Embarrassment
- Calcium, Zinc and Vitamin D: Do Middle-Aged Men Need Supplements?
- Zinc and Men's Health: Does It Really Help Testosterone and Sperm?
- Vitamin C: What It Really Does for Colds, Skin and Sperm
- Vitamin Blood Tests: Are They Necessary, and Which Ones Matter?
- Healthy Fats: Eating Fat Isn't Wrong, and Understanding HDL and LDL
- Nutrition After 50: Keep Your Muscle, Bones and Brain Strong
- Health Checkups for Working-Age Adults: What to Test and How Often
- Tumor Markers: Can They Screen for Cancer? What a High Result Means
- Men's Health After 50: Heart, Hormones and Sex in the Silver Years
- GLP-1 Weight-Loss Pens and Tirzepatide: Who They Suit and the Risks
- Botox for Men: Natural-Looking Results and What to Know First
- Hormonal Acne: Causes and Targeted Treatment
- DHT and Genetic Hair Loss: Does Hair PRP Really Work?
- Travel Health: Vaccines, Medicines and Sexual Health Before You Go
- Pneumococcal (Pneumonia) Vaccine: Who Needs It and Which Type
- Shingrix Shingles Vaccine: Who Needs It, How Well It Works, Doses
- Flu Vaccine: Why You Need It Every Year, Especially After 60
Case Stories
- Dr. Kris Case: A Much Younger Partner, Hormones and Erections
- Dr. Kris Case: Being a Father and Being a Partner After a Baby
- Dr. Kris Case: Understanding Your Sexual Response Cycle Can Help
- Dr. Kris Case: "I Have Herpes" — Telling a Partner and Living With It
- Dr. Kris Case: My First Patient, a Man of 80, and Sex in Later Life
- Dr. Kris Case: Sex Isn't Perfect Like the Movies, and Needn't Be
- Dr. Kris Case: She Was So Quiet I Didn't Know How She Felt
- Dr. Kris Case: Erection Problems When Trying for a Baby