Doxycycline Syncope Side Effects

Doxycycline Syncope Side Effect Reports


The following Doxycycline Syncope side effect reports were submitted by healthcare professionals and consumers.

This information will help you understand how side effects, such as Syncope, can occur, and what you can do about them.

A side effect could appear soon after you start Doxycycline or it might take time to develop.


Nausea, Syncope

This Syncope side effect was reported by a consumer or non-health professional from GB. A 63-year-old female patient (weight:NA) experienced the following symptoms/conditions: lower respiratory tract infection,asthma. The patient was prescribed Doxycycline (dosage: NA), which was started on Nov 16, 2012. Concurrently used drugs:
  • Inhalers
When starting to take Doxycycline the consumer reported the following symptoms:
  • Nausea
  • Syncope
These side effects may potentially be related to Doxycycline.
Syncope, Nausea

This Syncope Doxycycline side effect was reported by a health professional from GB on Jan 16, 2014. A Female , 63 years of age, weighting 140.0 lb, was diagnosed with and was treated with Doxycycline. The patient presented the following health conditions:
  • Syncope
  • Nausea
. Doxycycline dosage: NA. Additional drugs used at the same time:
  • Inalers
Nausea, Syncope

This is a Doxycycline Monohydrate side effect report of a 63-year-old female patient (weight:NA) from GB, suffering from the following symptoms/conditions: lower respiratory tract infection, who was treated with Doxycycline Monohydrate (dosage:Unk, start time: Nov 16, 2012), combined with: NA., and developed a serious reaction and a Syncope side effect. The patient presented with:
  • Nausea
  • Syncope
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Doxycycline Monohydrate treatment in female patients suffering from lower respiratory tract infection, resulting in Syncope.
Loss Of Consciousness, Syncope, Brain Neoplasm Malignant

A 61-year-old female patient (weight: NA) from US with the following symptoms: sinusitis started Doxycycline 100 Mg treatment (dosage: NA) on Nov 11, 2011. Soon after starting Doxycycline 100 Mg treatment, the consumer experienced several side effects, including:
  • Loss Of Consciousness
  • Syncope
  • Brain Neoplasm Malignant
. Concurrently used drugs:
  • Oxygen Concentrator
This finding indicates that some patients can be more vulnerable to developing Doxycycline 100 Mg side effects, such as Syncope.
Syncope, Dizziness, Tinnitus, Visual Impairment, Headache

A female patient from BR was prescribed and started Doxycycline on Sep 04, 2013. Patient felt the following Doxycycline side effects: syncope, dizziness, tinnitus, visual impairment, headache Additional patient health information: Female , 55 years of age, The consumer reported the following symptoms: was diagnosed with and. Doxycycline dosage: 100 Mg, Q12h. Concurrently used drugs: NA.
Fall, Syncope

This report suggests a potential Doxycycline Syncope side effect(s) that can have serious consequences. A 90-year-old female patient from US (weight:NA) was diagnosed with the following health condition(s): NA and used Doxycycline (dosage: NA) starting NS. Soon after starting Doxycycline the patient began experiencing various side effects, including:
  • Fall
  • Syncope
Drugs used concurrently:
  • Doxepin
Although Doxycycline demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Syncope, may still occur.
Oedema Peripheral, Panic Attack, Syncope

An adverse event was reported by a physician on Apr 02, 2012 by a Female taking Doxycycline (dosage: 150 Mg, Qhs) was diagnosed with and. Location: UNITED STATES , 19 years of age, patient began experiencing various side effects, including: Directly after treatment started, patient experienced the unwanted or unexpected Doxycycline side effects: oedema peripheral, panic attack, syncope. Additional medications/treatments:
Associated medications used:
  • Aczone (Unk)
  • Epiduo Gel (Unk)
Syncope, Haemorrhage, Anaemia

This Syncope problem was reported by a health professional from UNITED STATES. A 28-year-old female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Oct 26, 2011 a consumer started treatment with Doxycycline (dosage: NA). The following drugs/medications were being taken at the same time:
  • Mifepristone (mifeprex) (200 Mg, Oral)
  • Misoprostol (800 Mcg, Buccal)
When commencing Doxycycline, the patient experienced the following unwanted symptoms /side effects:
  • Syncope
  • Haemorrhage
  • Anaemia
Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Syncope, may become evident only after a product is in use by the general population.
Haemorrhage, Syncope

This is a Doxycycline side effect report of a 31-year-old female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Doxycycline (dosage: NA) starting Dec 14, 2011. Concurrently used drugs:
  • Mifepristone (mifeprex) (200 Mg, Oral)
  • Misoprostol (800 Mcg, Buccal)
Soon after that, the consumer experienced the following of symptoms:
  • Haemorrhage
  • Syncope
The patient was hospitalized. This opens a possibility that Doxycycline could cause Syncope and that some female patients may be more susceptible.
Syncope

This Syncope side effect was reported by a health professional from UNITED STATES on Oct 28, 2011. A female patient from UNITED STATES , 39 years of age, was treated with Doxycycline. Directly after treatment started, patient experienced the unwanted or unexpected Doxycycline side effects: syncope. Doxycycline dosage: NA.
Associated medications used:
  • Mifepristone (mifeprex) (200 Mg, Oral)
  • Misoprostol (800 Mcg, Buccal)
These side effects may potentially be related to Doxycycline.
Syncope, Anaemia, Abortion Incomplete, Haemorrhage

This Syncope side effect was reported by a health professional from UNITED STATES. A 32-year-old female patient (weight:NA) experienced the following symptoms/conditions: NA. The patient was prescribed Doxycycline (dosage: NA), which was started on Jan 15, 2010. Concurrently used drugs:
  • Mifepristone (mifeprex) (200 Mg, Oral)
  • Misoprostol (800 Mcg, Buccal)
When starting to take Doxycycline the consumer reported the following symptoms:
  • Syncope
  • Anaemia
  • Abortion Incomplete
  • Haemorrhage
The patient was hospitalized. These side effects may potentially be related to Doxycycline.
Syncope, Dizziness, Dyspnoea, Dysuria, Pyrexia, Chest Pain, Menorrhagia

This Syncope Doxycycline side effect was reported by a health professional from UNITED STATES on Sep 06, 2011. A Female , 24 years of age, was treated with Doxycycline. The patient presented the following health conditions:
  • Syncope
  • Dizziness
  • Dyspnoea
  • Dysuria
  • Pyrexia
  • Chest Pain
  • Menorrhagia
. Doxycycline dosage: NA. Additional drugs used at the same time:
  • Mifepristone (mifeprex) (200 Mg, Oral)
  • Misoprostol (800 Mcg, Buccal 400 Mcg, Buccal)
  • Misoprostol (800 Mcg, Buccal 400 Mcg, Buccal)
The patient was hospitalized.
Haemorrhage, Syncope

This is a Doxycycline side effect report of a 29-year-old female patient (weight:NA) from UNITED STATES, suffering from the following symptoms/conditions: NA, who was treated with Doxycycline (dosage:NA, start time: Sep 15, 2010), combined with:
  • Mifepristone (mifeprex) (200 Mg, Oral)
, and developed a serious reaction and a Syncope side effect. The patient presented with:
  • Haemorrhage
  • Syncope
which developed after the beginning of treatment. This side effect report can indicate a possible existence of increased vulnerability to Doxycycline treatment in female patients suffering from NA, resulting in Syncope.
Dizziness, Menorrhagia, Syncope

A 23-year-old female patient (weight: NA) from UNITED STATES with the following symptoms: NA started Doxycycline treatment (dosage: NA) on Feb 12, 2011. Soon after starting Doxycycline treatment, the consumer experienced several side effects, including:
  • Dizziness
  • Menorrhagia
  • Syncope
. Concurrently used drugs:
  • Mifepristone (mifeprex) (200 Mg,oral)
  • Misoprostol (800 Mcg,buccal)
This finding indicates that some patients can be more vulnerable to developing Doxycycline side effects, such as Syncope.
Syncope, Vomiting, Abdominal Pain, Dizziness, Abortion Incomplete, Haemorrhage

A female patient from UNITED STATES was prescribed and started Doxycycline on Apr 25, 2011. After Doxycycline was administered, patient encountered several Doxycycline side effects: syncope, vomiting, abdominal pain, dizziness, abortion incomplete, haemorrhage Additional patient health information: Female , 26 years of age, The consumer reported the following symptoms: . Doxycycline dosage: NA. Concurrently used drugs:
  • Mifepristone (mifeprex) (200 Mg,oral)
  • Misoprostol (800 Mcg,buccal)
Abortion Incomplete, Hyperhidrosis, Myalgia, Syncope, Oropharyngeal Pain, Haemorrhage

This report suggests a potential Doxycycline Syncope side effect(s) that can have serious consequences. A 34-year-old female patient from UNITED STATES (weight:NA) was diagnosed with the following health condition(s): NA and used Doxycycline (dosage: NA) starting Feb 26, 2011. Soon after starting Doxycycline the patient began experiencing various side effects, including:
  • Abortion Incomplete
  • Hyperhidrosis
  • Myalgia
  • Syncope
  • Oropharyngeal Pain
  • Haemorrhage
Drugs used concurrently:
  • Misoprostol (800 Mcg, Buccal)
  • Mifeprex (200 Mg, Oral)
Although Doxycycline demonstrated significant improvements in a number of clinically relevant cases, troublesome symptoms, such as Syncope, may still occur.
Syncope, Anaemia, Muscle Spasms, Haemorrhage, Abortion Incomplete

An adverse event was reported by a health professional on Feb 01, 2011 by a Female taking Doxycycline (dosage: NA) . Location: UNITED STATES , 34 years of age, patient began experiencing various side effects, including: Patient felt the following Doxycycline side effects: syncope, anaemia, muscle spasms, haemorrhage, abortion incomplete. Additional medications/treatments:
Multiple prescriptions taken:
  • Misoprostol (800 Mcg, Buccal)
  • Mifeprex (200 Mg, Oral)
The patient was hospitalized.
Postural Orthostatic Tachycardia Syndrome, Syncope, Cholecystitis Chronic, Confusional State, Pain, Asthenia, Headache, Head Injury

This Syncope problem was reported by a consumer or non-health professional from UNITED STATES. A female patient (weight: NA) was diagnosed with the following medical condition(s): NA.On Sep 23, 2003 a consumer started treatment with Doxycycline (dosage: NA). The following drugs/medications were being taken at the same time:
  • Multi-vitamins
  • Minocycline Hcl
  • Albuterol
  • Singulair
  • Yaz (Unk)
  • Yasmin (1 Df, Qd)
  • Lexapro (Unk)
When commencing Doxycycline, the patient experienced the following unwanted symptoms /side effects:
  • Postural Orthostatic Tachycardia Syndrome
  • Syncope
  • Cholecystitis Chronic
  • Confusional State
  • Pain
  • Asthenia
  • Headache
  • Head Injury
The patient was hospitalized. Although all drugs are carefully tested before they are licensed for use, they carry potential side effect risks. Some side effects, such as Syncope, may become evident only after a product is in use by the general population.
Confusional State, Postural Orthostatic Tachycardia Syndrome, Headache, Cholecystitis Chronic, Head Injury, Pain, Asthenia, Syncope

This is a Doxycycline side effect report of a female patient (weight: NA) from UNITED STATES. The patient developed the following symptoms/conditions: NA and was treated with Doxycycline (dosage: NA) starting Sep 23, 2003. Concurrently used drugs:
  • Multi-vitamins
  • Yaz (Unk)
  • Albuterol
  • Minocycline Hcl
  • Singulair
  • Lexapro (Unk)
  • Yasmin (1 Df, Qd)
Soon after that, the consumer experienced the following of symptoms:
  • Confusional State
  • Postural Orthostatic Tachycardia Syndrome
  • Headache
  • Cholecystitis Chronic
  • Head Injury
  • Pain
  • Asthenia
  • Syncope
The patient was hospitalized. This opens a possibility that Doxycycline could cause Syncope and that some female patients may be more susceptible.
Syncope, Dizziness, Abortion Incomplete, Anaemia, Dyspnoea

This Syncope side effect was reported by a health professional from UNITED STATES on Feb 28, 2011. A female patient from UNITED STATES , 28 years of age, was treated with Doxycycline. Patient felt the following Doxycycline side effects: syncope, dizziness, abortion incomplete, anaemia, dyspnoea. Doxycycline dosage: NA.
Multiple prescriptions taken:
  • Misoprostol (800 Mcg, Buccal)
  • Metronidazole
  • Mifeprex (200 Mg, Oral)
The patient was hospitalized. These side effects may potentially be related to Doxycycline.

DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

Doxycycline Syncope Causes and Reviews


Fainting is a temporary loss of consciousness. If you're about to faint, you'll feel dizzy, lightheaded, or nauseous. Your field of vision may "white out" or "black out." Your skin may be cold and clammy. You lose muscle control at the same time, and may fall down.

Fainting usually happens when your blood pressure drops suddenly, causing a decrease in blood flow to your brain. It is more common in older people. Some causes of fainting include

  • Heat or dehydration
  • Emotional distress
  • Standing up too quickly
  • Certain medicines
  • Drop in blood sugar
  • Heart problems

When someone faints, make sure that the airway is clear and check for breathing. The person should stay lying down for 10-15 minutes. Most people recover completely. Fainting is usually nothing to worry about, but it can sometimes be a sign of a serious problem. If you faint, it's important to see your health care provider and find out why it happened.


Doxycycline Syncope Reviews

Sun, 22 Mar 2009
I was taking Doxycycline for meibomitis and a little over 2 weeks after I started I came ill with severe head pressure,tinnitus,chills,nausea,flulike symptoms and after 2 emergency room visits and 6 different doctors (who were trying to treat me for sinuses,unknown reactions,and migraines)I was finally told by my opthalmologist(who was very aware of my symptoms and said doxy not the cause) finally consulted a neurologist and informed me last week that indeed it can cause all of these symptoms.What I would like to know is,does anyone know how long symptoms remain after stopping the doxy?Thanks
Wed, 03 Jun 2009
i am anaemic and i've been treating my acne with Doxycycline but instead my anaemia got worse i'm drowzy,my head feels heavy and i have a headache from hell.
Sun, 07 Jun 2009
I was taking Doxycycline for an MRSA staph infection. I had tightness in my chest and worsening difficulty breathing, sore tongue, burning palms and soles of my feet, and extreme exhaustion. At the end of my 9th day on the medication, I had excrutiating headaches, I was unable to eat and drinking more than a sip of anything made me unable to breathe. I didn't even think about this being a side effect of the antibiotic. It was really scary. I stopped taking it two days ago, and I still feel somewhat bad, but I can at least breathe again now.
Sat, 15 May 2010
The doctor had prescribed me 100 mg Doxycycline twice daily for 14 days. On 9th day of medication, I had itching in different parts of my body. Then I consulted the doctor but he asked me to continue the Doxycycline and complete the course. To control itching he gave me antihistaminic drug for the remaining medication period. Even after completing the course of medicine I had little bit itching for one more week.
Wed, 08 Dec 2010
I was taking them as an anti-malarial. Caused a duodenal ulcer and a bleed on the brain, either of which could have killed me. Both nearly did, I had 3 months in hospital and 8 operations before I was discharged. I will probably never be properly well again.
Fri, 10 Dec 2010
I have just taken myself off Doxycycline. I had so much pressure in my skull - unable to stand for very long, felt really weak and thought I was going to pass out..A Few pains in my kidney area.
Sat, 05 Mar 2011
I am a 45 year old women who developed acne 4 years agao after my hysterectomy.I have been using Doxycycline for the last 10 months......the only side effects I have experienced are nausea if pill tkn in empty stomach and weight gain ( which could be just my age). I took myself off the pills for 3 weeks, but my acne returned worse than ever!!! I have started taking it again...with in 3 day sthere was a marked improvement. Clearly I will continue taking it......what are the effects of taking this drug over long periods of time? Can any one help me on this?
Mon, 21 Mar 2011
I took Doxycycline for 10 days for perioral dermatitis. A week after completing the medicine I went to the ER with a burning in my chest. Then I lost my appetite, was nauseous and started losing weight. Three weeks later I was diagnosed with gastroparesis. I went on motility medication and changed my diet. It has been 14 months, I am improved, no longer taking the medication and able to eat small meals that are easily digestible. I know of 4 other people who developed gastroparesis after taking Doxycycline.
Sun, 22 May 2011
i had these 100mg tablets for a sinus infection its gone now i take the last 1 tomorrow but after the few few days on them i ad to take 8 2 to start with then 1 a day. so after a few days on them i got 2 complaints my anus was a bit sore and neck and shoulder pain stiffness so ill be glad to get the last 1 took now tomorrow.
Thu, 15 Sep 2011
I am 11 days into a 20 day regime of Doxycycline for Staph. I am 51 and have not had a period in 2 years. 2 days ago I had some breast tenderness and this morning I woke to classic menstrual bleeding with abdominal cramps. Could the Doxycycline be responsible for this in some way? Should I follow up with my GP or call my GYN?
DISCLAIMER: ALL DATA PROVIDED AS-IS, refer to terms of use for additional information.

Common Drugs

Abilify (10132)
Adderall (1304)
Amlodipine (6664)
Amoxicillin (4387)
Benadryl (1568)
Celebrex (12876 )
Celexa (1342)
Cialis (2975)
Cipro (8580)
Citalopram (7792)
Crestor (18839)
Cymbalta (14373)
Doxycycline (1757)
Effexor (7289)
Flexeril (435)
Flomax (2177)
Fluoxetine (4261)
Gabapentin (4593)
Hydrocodone (2469)
Ibuprofen (8222)
Lantus (10968)
Lexapro (3499)
Lipitor (17769)
Lisinopril (8919)
Lyrica (27148)
Medrol (650)
Mirena (41254)
Mobic (957)
Morphine (5356)
Naproxen (538)
Neurontin (6501)
Oxycodone (4438)
Pradaxa (13372)
Prednisone (5926)
Prilosec (2631)
Prozac (1954)
Seroquel (27216)
Simvastatin (8348)
Synthroid (4452)
Tamiflu (5585)
Topamax (3748)
Tramadol (5054)
Trazodone (1458)
Viagra (5394)
Vicodin (1153)
Wellbutrin (6324)
Xanax (2847)
Zocor (5718)
Zoloft(6792)
Zyrtec(1669)

Top Doxycycline Side Effects

Headache (186)
Nausea (176)
Rash (131)
Pain (126)
Dizziness (126)
Vomiting (125)
Dyspnoea (125)
Haemorrhage (116)
Malaise (114)
Diarrhoea (111)
Oesophageal Ulcer (100)
Pyrexia (97)
Fatigue (95)
Chest Pain (95)
Anxiety (94)
Pruritus (92)
Abortion Incomplete (91)
Photosensitivity Reaction (88)
Asthenia (82)
Abdominal Pain Upper (71)
Depression (41)
Abdominal Pain (40)
Anaemia (38)
Stevens-johnson Syndrome (35)
Suicidal Ideation (34)
Muscle Spasms (32)
Confusional State (32)
Vision Blurred (31)
Oesophagitis (31)
Oedema Peripheral (31)
Dyspepsia (30)
Hypotension (30)
Pancreatitis (30)
Syncope (30)
Benign Intracranial Hypertension (29)
Paraesthesia (28)
Palpitations (28)
Arthralgia (27)
Erythema (27)
Visual Impairment (27)
Intracranial Pressure Increased (27)
Pulmonary Embolism (27)
Dysphagia (26)
Blister (26)
Abdominal Discomfort (25)
Pancreatitis Acute (25)
Renal Failure Acute (25)
Panic Attack (25)
Hypersensitivity (24)
Swollen Tongue (24)

➢ More

Discuss Doxycycline Side Effects

More To Explore