Ramipril can cause hair loss, but it’s uncommon. Clinical trial data lists alopecia (the medical term for hair loss) as a “less common” side effect, occurring in 2% or fewer of people taking the drug. Notably, the U.S. FDA label for Altace (the brand name for ramipril) does not explicitly list hair loss among its reported adverse reactions, which suggests it’s rare enough that it didn’t surface prominently in the largest trials.
Still, if you’ve started ramipril and noticed more hair in the shower drain or on your pillow, the connection is plausible. Here’s what’s going on and what you can expect.
How Ramipril Might Trigger Hair Loss
Ramipril belongs to a class of blood pressure medications called ACE inhibitors. All ACE inhibitors have been connected to hair loss as a potential side effect, so this isn’t unique to ramipril. The type of hair loss involved is called telogen effluvium, which is different from the gradual thinning of male or female pattern baldness.
Your hair follicles cycle through three phases: growing, transitioning, and resting. In telogen effluvium, the medication pushes a larger-than-normal number of follicles into the resting phase prematurely. Those hairs then fall out over a short period, which can feel alarming. You might notice diffuse thinning across your scalp rather than bald patches or a receding hairline. This type of shedding typically appears 2 to 4 months after starting the medication, so the connection isn’t always obvious at first.
Ramipril vs. Other ACE Inhibitors
There isn’t strong evidence that any single ACE inhibitor causes more hair loss than another. A 2016 case report published in PubMed noted that while a few cases of hair loss had been documented with various ACE inhibitors, reports tied to lisinopril (another widely prescribed option) were essentially nonexistent at that time. That doesn’t mean lisinopril is safer for your hair. It more likely reflects how rarely this side effect is formally reported for any drug in the class. Switching from ramipril to a different ACE inhibitor may or may not help, because the mechanism appears to be a class-wide effect rather than something specific to ramipril’s chemistry.
Hypertension Itself May Play a Role
Here’s something many people don’t consider: the condition ramipril treats, high blood pressure, has its own independent link to hair thinning. Multiple epidemiological studies have found a strong association between hypertension and androgenic alopecia (pattern hair loss), regardless of age or sex. Research published in The Journal of Clinical Hypertension found that in men with newly diagnosed, untreated hypertension, the severity of hair loss correlated with markers of vascular damage like impaired coronary blood flow and increased arterial stiffness.
This means some of the hair thinning you notice after starting ramipril may have been developing before you ever took the medication. High blood pressure, insulin resistance, and the metabolic factors that often accompany them can all contribute to hair follicle miniaturization over time. Separating the drug’s effect from the disease’s effect is genuinely difficult, even for your doctor.
What Recovery Looks Like
The good news about drug-induced telogen effluvium is that it’s almost always reversible. For most people, hair regrowth begins within several months of stopping the medication. Because hair grows slowly (roughly half an inch per month), it can take six months to a year before you feel like your hair density is back to normal.
If you suspect ramipril is causing your hair loss, don’t stop taking it on your own. Blood pressure medications need to be tapered or switched under medical supervision. Your doctor can help you weigh the trade-off: ramipril provides meaningful cardiovascular protection, and if hair loss is the only bothersome side effect, you might decide the benefit is worth it. Alternatively, your doctor may try a different class of blood pressure drug entirely, such as a calcium channel blocker or an ARB, to see if the shedding stops.
Other Common Ramipril Side Effects to Watch For
Hair loss is far from the most frequent side effect of ramipril. The issues reported by more than 2% of clinical trial participants include a persistent dry cough (the most well-known ACE inhibitor side effect), dizziness, fatigue, and nausea. Skin-related reactions like itching, rash, and increased sweating also appear on the label. If you’re experiencing hair loss alongside any of these, it strengthens the case that ramipril is the cause rather than other factors like stress, nutritional deficiency, or the natural progression of pattern baldness.
Keeping a simple timeline can be useful. Note when you started ramipril, when you first noticed increased shedding, and roughly how much hair you’re losing. That information helps your doctor assess whether the timing fits the typical 2 to 4 month onset window for drug-induced hair loss and decide on next steps.