An intravenous drip puts nutrients straight into the bloodstream, bypassing the gut. That is a real advantage in some situations and no advantage at all in others — and knowing which you are in is the whole question.
What it can do: correct a deficiency quickly, deliver a nutrient when the gut cannot absorb it, rehydrate someone who is genuinely dehydrated, and achieve blood levels of certain vitamins that oral dosing cannot reach.
What it cannot do: create a benefit where there was no deficiency. If your levels are normal, raising them above normal does not generally make you function above normal — your kidneys clear the excess of the water-soluble vitamins, which is where the phrase about expensive urine comes from. It is unkind but not entirely unfair.
So the useful question is never which drip. It is whether you are short of anything, and of what.
Documented deficiency needing rapid correction — iron deficiency where oral iron is not tolerated or not absorbed is the clearest example, and it is common in women with heavy periods.
Malabsorption — coeliac disease, inflammatory bowel disease, or after bariatric surgery, where the gut cannot take the nutrient up regardless of how much you swallow.
B12 deficiency from pernicious anaemia or long-term metformin use, where parenteral replacement is standard practice.
Genuine dehydration — after a vomiting illness, for example, where fluid is the actual treatment.
Outside these, oral supplementation reaches the same place more cheaply and with fewer risks. That is not a reason nobody should ever have a wellness drip; it is a reason to know which category you are buying.
Drips are generally well tolerated, but they are not risk-free, and a few checks matter more than the menu does.
G6PD deficiency is the important one. High-dose intravenous vitamin C can trigger severe red blood cell breakdown in people with it. G6PD deficiency is relatively common in parts of Southeast Asia, is often undiagnosed, and is a simple blood test. Any clinic offering high-dose vitamin C should be asking about it.
Kidney function matters for high-dose vitamin C, which can contribute to kidney stones and is handled differently in impaired kidneys. Heart or kidney failure makes the fluid volume itself a consideration.
Then the ordinary risks of any cannula: bruising, inflammation of the vein, and rarely infection. Allergic reactions are uncommon but possible, which is a reason to be somewhere equipped to manage one rather than somewhere that comes to your hotel room.
Tell whoever is treating you what medicines and supplements you take. Interactions exist — high-dose vitamin C affects some blood tests and some chemotherapy regimens, among others.
A blood panel turns the question from a guess into a decision: full blood count, ferritin rather than haemoglobin alone, vitamin B12, vitamin D, and thyroid function where symptoms point there.
If something is low, you have a specific problem with a specific treatment and a way to check it has worked. If everything is normal, you at least know that, and can decide about an elective drip with your eyes open.
For women, ferritin is the one most often skipped and most often revealing, particularly with heavy periods.
Consultation ฿1,500–3,000 depending on complexity, plus the ฿300 clinic service fee. Any treatment is quoted separately before you agree to it.
Detox. The liver and kidneys perform detoxification continuously and are not waiting for assistance. No infusion has been shown to improve their function in a healthy person. A drip after heavy drinking rehydrates you, which does help how you feel — but that is fluid, not detoxification.
Immunity. Correcting a real vitamin C or vitamin D deficiency supports immune function. Infusing either into someone already replete has not been shown to prevent illness.
Skin lightening and brightening. Intravenous infusions marketed for whitening — typically glutathione, sometimes with high-dose vitamin C — are not an approved use, the evidence for the effect is limited and of low quality, and regulators including Thailand's FDA have issued safety warnings about intravenous glutathione given for this purpose. We would rather tell you that than sell it to you as established.
Anti-ageing. No infusion has been shown to slow ageing in humans. Where a drip helps how you feel, it is generally because it corrected something that was actually low, or because you were dehydrated, or because you sat still for an hour.
No residency, referral or Thai insurance is needed, and a blood panel plus assessment fits inside a short stay.
If you are visiting and want a drip, the honest sequence is still assessment first — not least because a deficiency found here is worth knowing about when you get home.
You will see a female specialist. Consultations are conducted in English or Thai.
A blood panel turns this from a guess into a decision — and for women, ferritin is the one most often missed. Message us on LINE and tell us what you have been feeling.
This page is general information, not a diagnosis or a treatment recommendation. Suitability for any treatment is decided individually after assessment, and results vary between individuals. Consultations are conducted in English or Thai. THE FIT CLINIC — 8th Floor, EM Tower, EMSPHERE, BTS Phrom Phong, Bangkok. Open daily 10:00–19:00.