If you lived in India in 2020 or 2021, you remember giloy. It went from a herb mostly known to Ayurvedic practitioners to a household word, sold as juice, tablets, and raw stems at every chemist and vegetable vendor, all promising stronger immunity against the virus going around. Years later, giloy (also called guduchi, or Tinospora cordifolia) is still a staple in many Indian medicine cabinets, and some men now ask whether it does anything for testosterone too.
This piece separates what giloy is genuinely studied for, immune and liver support, from the much thinner and largely unproven claim that it affects testosterone, so you know what you are actually taking it for.
Quick Answer
Giloy has a reasonable body of evidence for immune modulation and some liver-protective effects, mostly from laboratory and animal research with smaller human studies emerging. There is no meaningful human evidence that it raises testosterone, and it should never be used as a substitute for medical evaluation of low testosterone or andropause symptoms.
- Giloy's best-supported use is immune modulation, not hormone support
- Testosterone-specific research on giloy is almost entirely limited to animal studies
- Giloy can interact with diabetes medication and immunosuppressant drugs
- Quality varies widely across India's loosely regulated herbal supplement market
- Tell your doctor if you are taking giloy alongside testosterone replacement therapy (TRT) or other prescribed medication
What is giloy, and why did it become so popular?
Giloy is a climbing shrub used in Ayurvedic medicine for centuries, long before it became a pandemic-era household name. Traditional texts describe it as a “rasayana,” a broad category of rejuvenating herbs believed to support overall vitality and resistance to illness. During the pandemic, interest in anything with a reputation for immune support surged, and giloy, already familiar to Ayurvedic practitioners, became one of the most searched and purchased herbal products in the country almost overnight.
The immune-modulation angle has some genuine scientific backing, more than many herbs that rode the same wave of popularity. Laboratory studies suggest giloy’s compounds can influence certain immune cell activity, and a handful of human studies, mostly small and not always rigorously controlled, have looked at its effect on markers of immune function and liver enzymes. That is a meaningfully different claim from “boosts testosterone,” and the distinction matters.
Does giloy actually affect testosterone?
The honest answer is that almost no direct human research exists on this question. A small number of animal studies have examined Tinospora cordifolia extract and reproductive hormone markers, with mixed and inconsistent results depending on dose and the animal model used. None of this has been replicated in controlled human trials specifically measuring testosterone before and after giloy use in men.
This is a common pattern across many herbs riding a wave of general popularity: a real, specific traditional use gets stretched to cover a much broader claim it was never actually studied for. Giloy’s traditional and modern research reputation is about fever, immunity, and liver support. The testosterone claim appears to be an add-on that followed its fame, rather than something that emerged from actual research into the herb’s hormonal effects.
What should a man with andropause symptoms actually know before trying giloy?
Giloy is not inherently dangerous for most healthy men, but it is not a treatment for declining testosterone either. If a man is using it hoping it will address fatigue, low mood, or reduced libido that he suspects is hormonal, he is likely to be disappointed, because giloy was never studied for that purpose in the first place. The right first step for those symptoms is still a conversation with a doctor and, where appropriate, a blood test.
There are real interaction concerns worth knowing about. Giloy has been reported to lower blood sugar in some studies, which matters for men on diabetes medication, since the combination can push blood sugar lower than intended. It has also been flagged for a possible effect on the immune system that could matter for men on immunosuppressant medication after an organ transplant or for an autoimmune condition. Neither of these is a reason to panic, but both are reasons to mention giloy to your doctor rather than treating it as a harmless kitchen herb.
If you are taking giloy and considering TRT, or already on it
Tell your doctor you are taking giloy, the same way you would disclose any supplement, before starting testosterone replacement therapy. There is no documented direct interaction between giloy and testosterone medication specifically, but your doctor needs the full picture of what you are taking to interpret your blood work and watch for any unexpected effects, including on blood sugar if you are also managing diabetes.
The regulation question
India’s herbal supplement market, including giloy products, is loosely regulated compared to prescription medicine. Quality, concentration, and purity can vary meaningfully between brands, and adulteration or contamination has been flagged in quality checks of some Ayurvedic products sold without strict oversight. This is a reason to buy from a reputable source and to be skeptical of extraordinary claims on the packaging, not a reason to avoid Ayurvedic medicine altogether.
Frequently Asked Questions
Is giloy the same as guduchi? Yes, giloy and guduchi are two common names for the same plant, Tinospora cordifolia. You will see both used interchangeably on product labels and in Ayurvedic texts.
Can giloy cure andropause? No. Andropause and late-onset hypogonadism (LOH) are hormonal conditions that need medical diagnosis and, where appropriate, medical treatment. Giloy has no established role in treating low testosterone, and should never replace a doctor’s evaluation.
Is it safe to take giloy every day long term? Short courses are generally well tolerated by healthy adults, but long-term daily use, especially of concentrated extracts rather than the traditional stem decoction, has not been extensively studied for safety. If you want to take it regularly, mention it to your doctor so it is on your medical record.
Why did giloy get so much attention during the pandemic specifically? Giloy already had a reputation in Ayurveda for supporting the body’s resistance to illness, which made it a natural fit for widespread anxiety about immunity during a respiratory virus outbreak. That popularity outpaced the actual research base, which is still developing and remains focused on immune and liver effects rather than hormones.
Giloy has a real and reasonably supported place in Ayurvedic practice for immune support, and that is worth taking seriously on its own terms. What it is not, based on the evidence available today, is a testosterone remedy. If you are dealing with persistent fatigue, low mood, or reduced libido, the most useful next step is still a conversation with your doctor, not another bottle from the herbal aisle.
His Midlife is an information resource, not a medical provider. For personal advice, speak with your doctor. Write to us at thesecondspringofficial@gmail.com