Menstrual bleeding that lasts more than 7 days is classified as heavy menstrual bleeding, and it’s not something you need to just wait out. There are several effective ways to slow or stop prolonged bleeding, ranging from over-the-counter options to prescription treatments. The right approach depends on what’s causing the bleeding to drag on in the first place.
Why Your Period Is Lasting Longer Than 7 Days
A typical period lasts about 4 to 5 days. When bleeding stretches past a week, something is preventing your uterine lining from shedding efficiently or causing it to build up too thickly before your period starts. The most common reasons fall into two categories: hormonal imbalances and structural problems inside the uterus.
On the hormonal side, conditions like polycystic ovary syndrome (PCOS) and thyroid disorders are frequent culprits. When you don’t ovulate regularly, your body doesn’t produce enough progesterone to keep the uterine lining in check. The lining grows thicker than normal, and when it finally sheds, the bleeding is heavier and longer. Hypothyroidism in particular has a direct link to prolonged periods, and thyroid problems and PCOS often overlap, compounding the effect.
Structural causes include uterine fibroids and polyps. Fibroids are dense, noncancerous growths in the uterine wall. They distort the uterus, create fragile blood vessels prone to leaking, and interfere with the normal clotting process in the endometrial lining. Polyps, which are smaller growths on the lining itself, can also extend bleeding. Other possibilities include adenomyosis (where uterine lining tissue grows into the muscular wall) and, less commonly, endometrial hyperplasia.
Over-the-Counter Options That Reduce Flow
If your bleeding is prolonged but not dangerously heavy, anti-inflammatory pain relievers like ibuprofen can help. NSAIDs don’t just ease cramps. They also reduce the production of prostaglandins, hormone-like chemicals that keep blood vessels in the uterus dilated. Ibuprofen at a sufficient dose (around 1,200 mg per day, split into three doses) reduces menstrual blood loss by roughly 25%. Lower doses don’t appear to make a meaningful difference. Naproxen works similarly, with studies showing about a 30% reduction in blood loss over two cycles.
These aren’t dramatic reductions, but for borderline-prolonged periods, they can be enough to bring bleeding under control a day or two sooner. Start taking them as soon as bleeding begins rather than waiting for pain, since the goal is to reduce prostaglandin levels early in your cycle.
Prescription Medications That Work Faster
For heavier or more persistent bleeding, prescription treatments offer stronger results.
Tranexamic acid works by preventing blood clots in the uterus from breaking down too quickly. You take two tablets three times a day for up to 5 days per cycle. It’s specifically designed for heavy menstrual bleeding and acts relatively fast, often reducing flow within the first cycle. If it doesn’t make a noticeable difference after two cycles, it’s unlikely to be the right fit for you.
Combined oral contraceptives (the standard birth control pill) contain estrogen and progesterone, which thin and stabilize the uterine lining. They reduce menstrual blood loss by an estimated 50%, a significant drop. The pill also regulates your cycle length, so periods become shorter and more predictable. It typically takes one to two cycles to see the full effect. For acute bleeding episodes, doctors sometimes prescribe a short, higher-dose course of oral contraceptives to stop bleeding more quickly, then transition to a regular daily schedule.
Progestin-only treatments are another option, especially if you can’t take estrogen. Oral progestins taken during the second half of your cycle keep the lining from overgrowing. A hormonal IUD takes this approach further by delivering progesterone directly to the uterus, which dramatically thins the lining over time. Many people with a hormonal IUD eventually have very light periods or no periods at all.
When Prolonged Bleeding Needs Investigation
If your period regularly exceeds 7 days, or if this is a new pattern for you, it’s worth finding out why rather than just managing the symptoms. The standard first step is a transvaginal ultrasound, which can identify fibroids, polyps, and other structural abnormalities. If the ultrasound shows something unusual in the uterine cavity, further imaging or a procedure called hysteroscopy (a thin camera inserted through the cervix) may follow.
Endometrial sampling, a quick biopsy of the uterine lining, is recommended for anyone over 45 with abnormal bleeding. It’s also recommended for younger people who have risk factors for endometrial overgrowth, including obesity, PCOS, or a long history of irregular cycles. The goal is to rule out hyperplasia or precancerous changes. A thyroid blood test is a simple addition that can catch an underactive thyroid as the hidden driver of prolonged periods.
Signs You Shouldn’t Wait
Most prolonged periods are inconvenient and draining but not dangerous. Some are. You should seek same-day medical attention if you’re soaking through a pad or tampon every hour for several consecutive hours, passing blood clots the size of a quarter or larger, or feeling dizzy, lightheaded, or short of breath. These symptoms suggest blood loss significant enough to affect your circulation.
In these cases, treatment focuses on stopping the bleeding quickly. Medical management is the first-line approach for most people, with surgical options reserved for situations where medications aren’t effective or the bleeding is severe enough to cause hemodynamic instability.
The Anemia Connection
Prolonged periods that happen cycle after cycle quietly drain your iron stores. Iron deficiency anemia is one of the most common consequences of chronic heavy bleeding, and it develops gradually enough that many people adapt to feeling terrible without realizing something is wrong.
The early signs are easy to dismiss: fatigue, weakness, feeling cold all the time. As anemia worsens, you may notice a fast heartbeat, shortness of breath with normal activity, headaches, brittle nails, and pale skin. Some people develop unusual cravings for ice, dirt, or other non-food items, a hallmark symptom called pica. If any of these sound familiar and you’ve been dealing with long periods, an iron level check is a straightforward blood test. Iron supplements can correct the deficiency, but they work slowly, and the real fix is addressing the bleeding itself.
Putting It Together
For a period that’s stretching past 7 days right now, ibuprofen at an adequate dose is the most accessible immediate option. If prolonged bleeding is a recurring pattern, prescription treatments like tranexamic acid, hormonal contraceptives, or a hormonal IUD offer much more significant reductions in both flow and duration. The best long-term approach depends on the underlying cause, which is why imaging and bloodwork are worth pursuing if this keeps happening. Treating prolonged bleeding isn’t just about convenience. It protects your iron levels, your energy, and your quality of life.