Hyposecretion, when a gland produces too little of a hormone or other substance, is most commonly treated by replacing what the body can’t make on its own. This approach is called replacement therapy, and it applies across nearly every type of hyposecretion, from thyroid and adrenal hormones to growth hormone and antidiuretic hormone. The specific medication, dose, and delivery method depend on which gland is underperforming and how severe the deficiency is.
The Core Principle: Replace What’s Missing
The logic behind treating hyposecretion is straightforward. If a gland isn’t producing enough of a substance, you give the body a synthetic or bioidentical version of that substance to restore normal levels. For endocrine (hormonal) hyposecretion, this means taking hormones in pill, injection, or spray form, often for life. For exocrine hyposecretion, where glands like salivary or sweat glands underperform, treatment may instead focus on stimulating the remaining gland tissue to work harder.
Dosing is rarely one-size-fits-all. Doctors typically start with a low dose, monitor blood levels over several weeks, and adjust upward until your lab markers fall within a target range. This process of gradual adjustment, called titration, is a hallmark of hyposecretion treatment regardless of the specific hormone involved.
Thyroid Hyposecretion (Hypothyroidism)
Hypothyroidism is one of the most common forms of hyposecretion and one of the simplest to treat. The standard approach is a daily oral dose of synthetic thyroid hormone. For otherwise healthy adults, the typical starting dose is based on body weight, roughly 1.6 micrograms per kilogram per day. Someone weighing 150 pounds, for example, would start at around 110 micrograms daily.
Older adults and people with heart conditions start much lower, at about 25 micrograms per day, to avoid putting sudden stress on the cardiovascular system. From there, the dose is adjusted every 6 to 8 weeks based on blood tests until levels stabilize. Most people take this medication every morning on an empty stomach and continue it indefinitely.
Target ranges vary by age and situation. Pregnant individuals need tighter control, with targets shifting in each trimester. Adults over 70 may actually aim for slightly higher TSH levels (4 to 6 mIU/L) than younger adults, since overtreating in older populations carries its own risks, including bone loss and heart rhythm problems.
Adrenal Hyposecretion (Addison’s Disease)
When the adrenal glands don’t produce enough cortisol, treatment involves taking a synthetic version of the hormone, typically 15 to 25 milligrams per day split into multiple doses. The reason for splitting the dose is that cortisol naturally peaks in the morning and drops at night. Taking the medication in two or three smaller doses throughout the day mimics this natural rhythm more closely than a single large dose would.
People with primary adrenal insufficiency often also have low aldosterone, the hormone that regulates sodium and fluid balance. This can cause salt cravings, low blood pressure, and dehydration. A high-sodium diet is sometimes recommended alongside medication, though the exact amount should be tailored to your specific needs.
Emergency Preparedness
Adrenal hyposecretion carries a unique risk: adrenal crisis. During severe illness, injury, or surgery, the body normally surges cortisol production. If your adrenal glands can’t do this, the result can be a life-threatening drop in blood pressure. People with adrenal insufficiency are typically given an emergency injection kit containing a pre-measured dose of hydrocortisone. The injection goes into the outer thigh muscle at a 90-degree angle, directly into bare skin. Knowing how and when to use this kit is a critical part of living with the condition.
Growth Hormone Deficiency
Adults and children with growth hormone deficiency receive synthetic growth hormone through daily subcutaneous injections, meaning a small needle delivers the medication just under the skin. For adults, a common starting dose is around 0.3 milligrams per day, with adjustments based on blood levels of a marker called IGF-I, which reflects how much growth hormone your body is using.
Daily injections have been the standard since the treatment was first approved in 1996, but longer-acting formulations that only require a weekly injection are now available. These newer options aim to reduce the burden of daily shots, which has historically been a significant barrier to people starting or sticking with treatment. Dosing for weekly versions is calculated as a ratio of approximately 8.2 times the daily dose, so someone taking 0.17 milligrams daily might switch to about 1.4 milligrams per week.
Antidiuretic Hormone Deficiency (Diabetes Insipidus)
When the pituitary gland doesn’t produce enough antidiuretic hormone (also called vasopressin), the kidneys lose their ability to concentrate urine. The result is extreme thirst and the production of large volumes of very dilute urine, sometimes several liters per day. Treatment uses a synthetic version of the hormone called desmopressin, which comes in several forms.
The most common at-home option is a nasal spray, dosed by weight. People under 50 kilograms (about 110 pounds) typically use one spray of 150 micrograms, while those over 50 kilograms use two sprays, every 12 to 24 hours. A dissolvable tablet placed under the tongue is another option, particularly popular for children because it’s easy to take and absorbs well. Both forms reach peak levels in about 60 to 90 minutes. Injectable versions exist but are mainly used in hospital settings.
Exocrine Hyposecretion
Not all hyposecretion involves hormones. Exocrine glands, like salivary glands and tear glands, can also underperform. This is common after radiation therapy for head and neck cancers and in autoimmune conditions like Sjögren’s syndrome. Treatment here takes a different approach: rather than replacing the missing secretion directly, medications stimulate the remaining gland tissue to produce more.
Two medications are commonly used for salivary gland hyposecretion. Both work by activating receptors in the glands that trigger fluid production. The typical regimen is three doses per day, taken for at least three months before you can fully judge whether they’re working. About two-thirds of patients see meaningful improvement in symptoms like dry mouth and difficulty swallowing. For dry eyes from the same underlying cause, artificial tears and similar lubricants often serve as the primary treatment alongside these gland-stimulating medications.
Long-Term Monitoring and Risks
Because most forms of hyposecretion require lifelong treatment, ongoing monitoring is essential. For thyroid replacement, this means periodic blood tests to make sure your levels haven’t drifted too high or too low. For growth hormone, IGF-I levels are checked and the dose adjusted to keep them within an age-appropriate range. For adrenal replacement, monitoring is more clinical, based on how you feel, your weight, blood pressure, and energy levels, since cortisol blood tests are less reliable for gauging replacement adequacy.
Long-term corticosteroid replacement, even at the low doses used for adrenal insufficiency, does carry some risk. Bone thinning is the most well-documented concern, with studies showing elevated fracture rates in people on chronic corticosteroid therapy. Cardiovascular effects, changes in blood sugar and cholesterol metabolism, and increased susceptibility to infection are also recognized risks. Keeping the replacement dose as low as effective, rather than overshooting, helps minimize these complications. Newer delayed-release formulations have shown small but measurable improvements in weight, blood pressure, and blood sugar control compared to traditional three-times-daily dosing, suggesting that how the medication is delivered matters alongside how much is taken.
For all types of hormone replacement, the goal is the same: restore the body’s levels to as close to normal as possible without overcorrecting. Too little replacement leaves symptoms unresolved. Too much creates a new set of problems that mirrors hypersecretion. Finding the right balance usually takes a few rounds of dose adjustments over several months, followed by periodic check-ins to ensure the dose still fits as your body, age, and circumstances change.