OpenHealth Q&A

Get answered by medical professionals

Experiencing Dark Loose Stools on Amoxicillin?

8/29/2025, 8:01:51 PMMale25-34

Age 29, currently taking Ivabradine at a dosage of 5mg, Mirtazapine at 15mg, and following a seven-day treatment with Amoxicillin at 875mg due to a sinus infection. The use of amoxicillin is really disrupting my gastrointestinal system; I’ve been dealing with nausea and acid reflux, which are typical for me when taking this antibiotic. However, this time I’m also experiencing loose stools, and I noticed that my stool was particularly dark this morning, approaching a nearly black shade. My doctor suggested that it’s probably not related to the amoxicillin and advised me to keep an eye on it in case it continues. My communication was through the office staff, and I had additional inquiries that weren't addressed. I’m wondering if this could simply be a temporary issue. Might my poor appetite, which means I’m taking my medication without sufficient food, contribute to this problem? Also, what steps can I take to alleviate the gastrointestinal discomfort while I finish my remaining doses? I’m set to take my final amoxicillin pill on Tuesday morning. My health anxiety tends to make me think about the worst possible scenarios, especially since I was recently in the emergency room for my sinus infection, and I cannot afford another visit shortly after that.

Crohn's DiseaseThyroid DisordersInternal Medicine

Answers (1)

Cony

8/29/2025, 8:02:21 PM

OpenHealth AI

It’s understandable to be concerned about your gastrointestinal symptoms while taking Amoxicillin, especially with your history of health anxiety. The dark loose stools you're experiencing can indeed be unsettling, but there are several factors to consider.

Explanation

  1. Antibiotics Impact: Amoxicillin can disrupt the balance of good bacteria in your gut, leading to nausea, acid reflux, and diarrhea. This is common but can be uncomfortable.

  2. Dark Stools: Stools turning dark or nearly black can indicate blood in the digestive tract or an effect from certain medications and foods. Given you are taking Amoxicillin, while it might not be the direct cause, it's important to monitor this symptom closely.

  3. Food Intake: Taking medications without enough food can exacerbate stomach issues such as nausea and acid reflux. This interaction could also affect stool consistency.

Next Steps

  1. Monitor Symptoms: Keep an eye on your stools for the next couple of days. If they remain dark or you notice any blood, or if you develop severe pain, high fever, or if the diarrhea persists, it would be important to seek medical advice immediately.

  2. Dietary Adjustments:

    • Try to eat smaller, more frequent meals to avoid overwhelming your stomach.
    • Opt for bland foods like rice, bananas, toast, and applesauce to help settle your stomach.
    • Stay hydrated by drinking plenty of fluids, such as water or oral rehydration solutions.
  3. Gut Health Support: Consider incorporating a probiotic once you finish the antibiotic course. Probiotics can help restore healthy gut bacteria and may alleviate some of the gastrointestinal side effects.

  4. Manage Medication Timing: When taking your final Amoxicillin dose, try to do so with food to minimize gastrointestinal irritation.

Reassurance

While it's normal to feel anxious about these symptoms, especially after a recent emergency visit, your situation might simply be a temporary reaction to the antibiotic or dietary habits. Remember, many people experience gastrointestinal changes with antibiotics, and managing your diet and hydration can greatly help. If your symptoms do not improve or worsen, follow up with a healthcare provider for further evaluation, as they can provide more personalized guidance.

Take care, and let me know if you have more questions or need further assistance!

Related Questions

Concerns About Potential Medical Malpractice

A few days ago, my 23-year-old partner underwent surgery for an appendix removal. Initially, the procedure was intended to be laparoscopic; however, complications arose when their appendix ruptured, leading to an infection. Consequently, the surgical team had to perform a larger incision and close it using staples. Presently, my partner is on a 3mg regimen of morphine to manage pain, and they have a Jackson-Pratt (JP) drain in place, which has recently stopped producing significant fluid. This decline raised the doctor's concerns regarding possible pus accumulation in my partner's abdomen. During a follow-up examination, the doctor did not inform us about the intended procedure. He abruptly pulled back the covering and began to apply pressure at the stitch site. Some drainage emerged, prompting discomfort for my partner. Without any prior warning, the doctor requested a staple remover from a nurse. When the nurse could not locate one immediately, the doctor left the room, displaying impatience. I suggested to my partner that they might want to ask for additional pain relief before the doctor returned. My partner indicated they would relay their pain level to the doctor during the procedure. Upon the doctor’s return, he still failed to explain the impending actions. He proceeded to remove several staples, forcefully inserting the staple remover into the incision. This action reopened the wound, causing my partner to react in visible pain. As the doctor continued to manipulate the staple remover awkwardly within the incision, he offered sporadic apologies, seemingly indifferent to my partner's distress. Notably, there was no nursing staff available during this time, although one nurse walked by and appeared alarmed at the doctor’s conduct. The doctor continued to squeeze around the incision to expel any remaining fluid while intermittently grabbing gauze to dab the area before forcefully re-engaging the staple remover. Remarkably, at no point did the physician inquire about my partner's pain level or the last administration of pain medication, which had been some time prior. Eventually, he used gauze to absorb the fluids, covering the wound with fresh tape, ultimately leaving it open for further drainage. I recognize that some medical scenarios necessitate reopening a wound, but the manner in which it was executed raised numerous red flags. The lack of prior communication, failure to assess pain levels, absence of nursing support, and the aggressive technique used to reopen the incision all contribute to my concerns. Following this ordeal, my partner appeared emotionally drained, visibly pale, and lost in thought, as if they had given up hope. When a nurse returned, my partner could barely articulate their need for another dose of pain medication, which was administered. Upon reflection, they stated they would have requested pain relief had they been forewarned of the doctor's actions. Even when I offered to ask a nurse to clarify what the doctor intended, my partner resignedly replied that it would be futile, as even the nurses seemed unaware. While I understand that post-surgical recovery can be painful, it seems excessive discomfort could have been minimized with straightforward communication about the forthcoming procedures. Currently, my partner is sleeping deeply, their skin feeling unusually cool to the touch, which has left me concerned. It's been increasingly difficult to maintain their spirits after the distressing experience they endured. In summary, is the doctor's conduct—specifically using a staple remover without warning, failing to check on my partner's pain level, and conducting the procedure without a nurse present—indicative of medical malpractice?

FibromyalgiaInternal MedicineEndocrinology
Male25-34
10 minutes ago

Seeking Answers Amid Ongoing Health Issues

At 20 years old, I am navigating the complexities of living with POTS and suspected Ehlers-Danlos syndrome, although I am yet to undergo the necessary tests. In addition, I manage multiple food allergies, including celiac disease. For my cystic acne, I am currently prescribed spironolactone and have had a Mirena IUD in place since January 2025. In May, I discovered a lump along my jawline that I initially attributed to swollen lymph nodes. Since then, this lump has increased in size, and I've noticed additional nodes appearing. Other concerning symptoms have also emerged. My appetite has dwindled, making me feel nauseous frequently. I experience night sweats and persistent, intense itching in my legs, which has led to numerous bruises from constant scratching. Attempts to eat often result in overwhelming nausea and a near-vomiting sensation just after a couple of bites. Additionally, fatigue has become a significant hurdle; I've been sleeping excessively and have even struggled to stay awake while driving, contributing to a 10% weight loss without any deliberate effort. In early June, I sought help at urgent care, where the recommendation was to pursue an ultrasound if the swelling in my lymph nodes persisted. About a week later, I consulted with my primary care physician. During our conversation, he dismissed my concerns as stress from school and work, despite having just completed my bachelor's degree and finding my job manageable. He conducted blood tests, which returned mostly normal except for a slight elevation in lymphocytes. His conclusion was that I likely had a virus that would resolve naturally. However, my lymph nodes did not shrink; in fact, they continued to grow. After switching to a new primary care provider, I had my first appointment at the end of July, where further tests and an ultrasound were ordered, although I was faced with delays. By early August, I ended up in the emergency room due to significant chest and rib pain, alongside my other troubling symptoms. The chest x-ray returned without issues, prompting a referral to oncology. Following my visit to oncology, they conducted tests and an ultrasound, which showed no abnormalities, leading the doctors to essentially dismiss my concerns. The detailed blood work from my new primary care provider returned mostly normal results, revealing only slightly low neutrophils, elevated lymphocytes, high immunoglobulin E, and an increased thyroid marker (TSH). The doctor suggested I might be struggling with depression and questioned if these symptoms were purely mental health-related. I firmly stated that my physical symptoms were distinctly different from any prior mental health experiences; I generally feel well emotionally except for these persistent health challenges. As a next step, she is referring me to various specialists, including a dietitian, endocrinologist, and sleep expert, while I am also reaching out to a gastroenterologist. I'm reaching out to see if anyone has insight into what might be contributing to this situation. The lack of concrete answers from numerous tests has left me feeling more frustrated and overwhelmed than if I had a definitive diagnosis, as uncertainty has become a difficult burden to carry.

LupusCrohn's DiseaseThyroid Disorders
Male25-34
21 minutes ago

Seeking Guidance After Miscarriage and Fever

I experienced a miscarriage recently, and I have a mild fever currently measuring 100.2 degrees Fahrenheit. I was seen in the emergency room and consulted my primary care physician, both of whom confirmed the miscarriage. As of today, I've begun a course of antibiotics along with a prescribed NSAID. I am 25 years old, standing 5 feet tall and weighing 100 pounds, with my HCG levels now at zero. Is it safe for me to continue monitoring my condition at home, or should I seek immediate medical attention? Additionally, I would like to know the specific factors or symptoms that would necessitate an emergency visit.

LupusInternal MedicineRheumatology
Male25-34
21 minutes ago

Seeking Guidance After Miscarriage and Fever

This week, I experienced a miscarriage, which has been confirmed by both an ER doctor and my primary care physician. I began a course of antibiotics along with an NSAID prescription today. I am a 25-year-old female, standing at 5 feet tall and weighing 100 pounds. My HCG levels have returned to zero. Given my current temperature of 100.2, I am unsure whether this is a situation that requires immediate medical attention or if I can manage my symptoms at home. If home monitoring is acceptable, what specific signs should prompt a visit to the emergency room?

LupusCOPDInternal Medicine
Male25-34
27 minutes ago

Struggling with Toenail Fungus for Nearly Two Decades—Seeking Guidance

For almost twenty years, I've battled toenail fungus stemming from an athlete's foot infection I contracted in a locker room during my childhood. Despite my best efforts to manage it, the infection has spread to all ten of my toenails. I've tried numerous treatments, including prescription creams and various over-the-counter antifungal medications, and have adhered closely to recommended practices like changing socks and keeping my feet clean and dry. In 2023, I began a three-month course of oral terbinafine. While it effectively cleared up the athlete's foot, it only partially addressed the nail fungus. I was advised that as my nails grew out, the infected parts would be trimmed away. This advice proved somewhat effective, but not all infected areas grew out as hoped, and the condition returned to the rest of my foot. I underwent another three-month treatment last spring, which successfully eliminated the remaining athlete's foot and nail fungus, apart from the infection on my pinky toes. A few months later, my pinky nails remain infected, and I've noticed hints of athlete's foot reappearing between my fourth and fifth toes. This ongoing issue has left me at a loss. I make a diligent effort to manage my foot hygiene, but I yearn for relief—that my feet would no longer be a source of discomfort and embarrassment. I don't share footwear or walk barefoot, so I suspect this isn't a new infection, but rather an exacerbation of the preexisting one. I'm unsure of the next steps to take. I'm hesitant to go through another round of oral terbinafine due to its potential harsh effects on my liver, and topical treatments have shown little promise against nail fungus. I’m considering consulting a podiatrist about the possibility of removing the infected nails, but I’m uncertain if that approach is feasible or advisable. To provide context, I'm a 5'5", 140-pound healthy individual with no existing medical conditions such as diabetes or poor circulation. I don’t take any prescription medications, consume alcohol lightly, and do not smoke, though I occasionally use edibles. Any advice would be greatly appreciated!

FibromyalgiaCrohn's DiseaseInternal Medicine
Male25-34
1 hour ago