Safety and Side Effects
Contraindications, drug interactions, what compounded means, what gets monitored, and when to seek emergency care.
40 questions answered
When should I seek urgent or emergency care?
- Seek urgent or emergency care immediately for chest pain, trouble breathing, fainting, a prolonged erection, sudden vision or hearing loss, signs of a blood clot or a severe allergic reaction. Call 911 or go to the nearest emergency department; do not wait for a reply. Chest pressure, sudden breathlessness and any loss of consciousness count; a prolonged erection is one lasting more than four hours; blood clot signs include swelling, pain or warmth in one leg or a sudden severe headache; and a severe allergic reaction means swelling of the face, lips, tongue or throat, difficulty swallowing or a spreading rash. Do not use a website message, email, text or patient portal message for any of these; ACT 2 Health is not an emergency service. Once you are safe, tell your ACT 2 Health clinician what happened so your plan can be reviewed.
- Medical consent
Can I take tadalafil or another PDE5 inhibitor if I take nitrates?
- No — tadalafil and other PDE5 inhibitors must not be taken if you take nitrates, because the combination can cause a severe and potentially fatal drop in blood pressure. Nitrates in any form count: nitroglycerin tablets, spray, patches or ointment, isosorbide mononitrate and isosorbide dinitrate. This is an absolute contraindication, not a caution to be weighed: if you take a nitrate at all, including one you use only occasionally or as a rescue medication, tell your clinician, and do not take a PDE5 inhibitor. Tadalafil also requires caution with alpha-blockers and other blood pressure medications, because their effects on blood pressure add together.
- Tadalafil Daily
Do poppers count as nitrates?
- Yes — poppers count as nitrates, and taking them with tadalafil or any other PDE5 inhibitor carries the same risk as a prescription nitrate such as nitroglycerin. Amyl nitrite and the related inhaled products sold as poppers are nitrates, and the risk is a severe, potentially fatal drop in blood pressure. Recreational use counts, so tell your clinician if poppers are part of your life — the combination is contraindicated regardless of why either substance was taken, and regardless of how much time passed between them. If you have taken a PDE5 inhibitor and become faint, dizzy or develop chest pain, seek emergency care rather than waiting to see whether it settles.
- Sexual health questions
Why does ACT 2 Health need a full list of my medications?
- A clinician cannot judge whether a treatment is appropriate without knowing everything you already take, because at ACT 2 Health the most serious risks are interaction risks rather than the medication itself. The nitrate and PDE5 inhibitor interaction can be fatal; methylene blue is a monoamine oxidase inhibitor and must not be combined with SSRIs, SNRIs, MAOIs, triptans or other serotonergic medications because of the risk of serotonin syndrome; rapamycin has extensive CYP3A4 interactions, including with grapefruit; and GLP-1 medications slow gastric emptying, which can alter the absorption of other oral medications, including oral contraceptives. Include prescriptions from every prescriber, anything taken only occasionally or as needed, over-the-counter medicines, supplements and recreational substances. An incomplete list is the most common way a safe plan becomes an unsafe one.
- How ACT 2 works
Can I take an ACT 2 treatment alongside medication from another prescriber?
- Usually yes — ACT 2 Health is designed to work alongside your existing prescriber rather than replace them — but the clinician needs the complete list of what you already take before anything is added, and some combinations are ruled out outright. Nitrates with a PDE5 inhibitor, serotonergic medications with methylene blue, and anything that lowers sodium alongside compounded oxytocin are exclusions rather than judgment calls. Never stop, start or change a medication another prescriber gave you on your own: raise it with the prescriber who wrote it, or with your ACT 2 Health clinician, and let them coordinate. Sharing your ACT 2 Health plan and lab results with your own physician is encouraged, and makes that coordination easier.
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Do I need to tell ACT 2 Health about vitamins and supplements?
- Yes — list every supplement you take, including vitamins, herbal products and anything bought over the counter, because supplements interact with prescription medication and they also distort lab results. Concurrent B-vitamin supplementation can mask a B12 deficiency on a blood panel, which is why it matters before testing as well as before prescribing. Some supplements carry a real interaction risk rather than a theoretical one, and the word natural tells you nothing about whether a product is inert. If you start something new after your plan is set, tell your clinician then rather than waiting for the next follow-up.
- Lab testing
What does it mean that a medication is compounded?
- A compounded medication is prepared for an individual patient by a licensed compounding pharmacy, to a prescription written for that person, rather than manufactured in fixed strengths and sold as a finished product — which is how a combination preparation, or a strength or route that is not commercially available, becomes possible. Compounding describes how a medicine was made; it does not mean a generic, a cheaper copy of a branded drug, or a preparation that inherits a branded product's evidence. Compounded medication. Prepared by a licensed compounding pharmacy under a prescription written for you. Compounded medications are not FDA-approved, are not reviewed by the FDA for safety or effectiveness, and are not equivalent to or interchangeable with any branded product. Prescribed only when a licensed provider determines it is medically appropriate.
- All treatments
Are compounded medications FDA-approved?
- No — compounded medications are not FDA-approved. Compounded medication. Prepared by a licensed compounding pharmacy under a prescription written for you. Compounded medications are not FDA-approved, are not reviewed by the FDA for safety or effectiveness, and are not equivalent to or interchangeable with any branded product. Prescribed only when a licensed provider determines it is medically appropriate.
- Peptide legal and FDA status
Does the clinical trial evidence for a branded medication apply to the compounded version?
- No — the clinical trial evidence for a branded medication does not apply to the compounded version. A compounded preparation may contain the same active ingredient as a branded medication, but it has not been through the trials that branded product was tested in, and no trial has established what the compounded preparation does. Results vary. Clinical trial results apply only to the FDA-approved branded medication specifically identified and do not apply to compounded medications. All medications must be prescribed by a licensed provider based on medical necessity.
- Weight loss questions
How are compounding pharmacies regulated?
- Compounding pharmacies are licensed and inspected by state boards of pharmacy and operate under Sections 503A and 503B of the Federal Food, Drug, and Cosmetic Act, which is a different regime from the one that governs a drug manufacturer. A 503A pharmacy compounds against an individual prescription and is overseen primarily by its state board; a 503B outsourcing facility registers with the FDA and is inspected against current good manufacturing practice. Neither route makes a compounded preparation FDA-approved, and under neither one does the FDA review the preparation for safety or effectiveness. ACT 2 Health prescriptions are dispensed by licensed, quality-controlled pharmacies, and you can ask which pharmacy is preparing yours.
- How to judge a peptide provider
What is monitored while I am on treatment, and why?
- What is monitored while you are on treatment at ACT 2 Health depends on the therapy, because the markers that move differ by therapy. Testosterone therapy is followed with repeat testosterone, hematocrit, estradiol and PSA. Estrogen therapy is followed clinically, and any bleeding after menopause is investigated rather than watched. GLP-1 treatment is followed for tolerability and for the symptoms that would signal pancreatitis or gallbladder disease. Metformin includes vitamin B12 and kidney function, because long-term use reduces B12 absorption. Rapamycin requires regular laboratory monitoring of lipids and glucose handling, and is not prescribed without a commitment to it. Peptide therapy is monitored clinically alongside baseline and repeat blood work, because for most peptides there is no single marker that tracks the effect. The purpose is to catch a problem while it is still a number on a page rather than a symptom you can feel.
- Lab testing
Are ACT 2 Health treatments safe?
- The safety of an ACT 2 Health treatment is judged for you individually rather than being a blanket property of the treatment, because no treatment is safe for everyone. That judgment is made from your history, your current medications and, where relevant, your lab results, and several ACT 2 Health treatments are compounded preparations that are not FDA-approved. All medical decisions are made solely by licensed healthcare professionals. Medications are prescribed only when medically necessary. GLP-1 medications are not suitable for everyone. Results may vary.
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Who should not use ACT 2 Health at all?
- ACT 2 Health should not be used by children or adolescents, anyone physically outside a US state during a visit, or anyone needing urgent or emergency care. It is for adults, and it is also not appropriate for anyone whose problem requires a physical examination, imaging or hands-on treatment, during pregnancy or breastfeeding, or for anyone seeking a prescription without evaluation, lab work and follow-up. A clinician may additionally decline to treat where the monitoring a therapy requires is not available where you live. Being declined for one treatment does not rule out every treatment, and the clinician will say what kind of care to seek instead.
- Getting started
Can I be treated if I am pregnant, breastfeeding or trying to conceive?
- ACT 2 Health treatments are not prescribed during pregnancy or breastfeeding, and several are also excluded while you are trying to conceive. GLP-1 medications such as semaglutide and tirzepatide, rapamycin, compounded NAD+ and glutathione injections and methylene blue are all excluded in pregnancy and breastfeeding; compounded oxytocin is additionally excluded when trying to conceive, because oxytocin stimulates the uterus; and the 5-alpha-reductase inhibitors used in hair loss treatment are teratogenic and must not be taken or even handled by women who are pregnant or may become pregnant. Tell your clinician if you are pregnant, may be pregnant, are breastfeeding or are trying to conceive — at any point, including after a treatment has started. If you become pregnant while on a treatment, contact your clinician promptly rather than deciding on your own what to do about it.
- Hormone questions for women
Can I be treated if I have a history of cancer?
- A history of cancer does not automatically rule out care at ACT 2 Health, but it changes what can be considered and it rules some treatments out outright. A personal or family history of medullary thyroid carcinoma or Multiple Endocrine Neoplasia syndrome type 2 excludes GLP-1 treatments such as semaglutide and tirzepatide; active breast or endometrial cancer, or any active estrogen-sensitive cancer, excludes systemic estrogen therapy; and any history of malignancy is reviewed before a growth-hormone-releasing peptide such as sermorelin is considered. If you are under the care of an oncologist, say so, and expect your ACT 2 Health clinician to want that oncologist's input before anything is prescribed.
- Vaginal estrogen after breast cancer
Can I be treated if I have heart disease?
- Cardiovascular disease does not rule out care at ACT 2 Health, but it excludes specific treatments and it changes how the rest are evaluated. Tadalafil, and the compounded blends that contain it, are not appropriate after a recent heart attack or stroke, with unstable angina or with uncontrolled blood pressure, and are contraindicated with nitrates in any form. Compounded oxytocin is not used with uncontrolled blood pressure or significant cardiovascular disease until that is addressed, and beta blockers are not appropriate with bradycardia, certain cardiac conduction abnormalities or significant hypotension. Tell your clinician about every cardiac diagnosis, procedure and medication, including blood pressure and rhythm medications — this is the area where an incomplete history does the most harm.
- Triple Action Blend
Can I be treated if I have liver or kidney disease?
- Liver or kidney disease does not automatically rule out care at ACT 2 Health, but it is one of the first things a clinician checks, because several treatments are cleared or metabolized by those organs. Metformin is not appropriate with significant renal impairment, acute illness with dehydration or a history of lactic acidosis, and hepatic disease requires review; systemic estrogen is not appropriate with active liver disease; enclomiphene is not appropriate with significant hepatic impairment; and compounded NAD+ and glutathione injections require review where renal or hepatic impairment is significant. Bring any recent liver or kidney results you have, and mention the diagnosis even if it has been described to you as mild or historic.
- Metformin
Can I drink alcohol while I am on treatment?
- Alcohol is not automatically off-limits at ACT 2 Health, but it interacts with several treatments and it is worth being honest with your clinician about how much you actually drink. Heavy alcohol use is a significant concern with metformin because of the risk of lactic acidosis; alcohol and tadalafil both lower blood pressure, so together they can cause dizziness or fainting; and many people find alcohol affects them differently once they are on a GLP-1. Alcohol also shows up directly on a lab panel — in liver enzymes, triglycerides and blood pressure — so understating it makes your own results harder to interpret. Your real intake changes both what is safe to prescribe and what your numbers mean.
- Lab testing
What should I tell ACT 2 Health about drug allergies?
- Tell your ACT 2 Health clinician about every drug allergy and every reaction you have had to a medication, including what actually happened, because a reaction described as an allergy and a reaction described as a side effect are handled very differently. Some preparations carry allergens that are not obvious from the drug name: compounded progesterone capsules, for example, may be suspended in peanut oil, so a peanut allergy has to be disclosed. Injection-site reactions are common with injectable preparations; true allergic reactions are not. A severe allergic reaction — swelling of the face, lips, tongue or throat, difficulty breathing or swallowing, or a spreading rash — is a medical emergency, so call 911 rather than messaging your clinician.
- How ACT 2 works
Can I take more than one ACT 2 treatment at the same time?
- Several ACT 2 Health treatments can be prescribed together and many patients are on more than one, but which combinations are appropriate is a clinical decision rather than a menu choice. Combinations carry considerations the individual treatments do not: the compounded blend used in sexual wellness pairs ingredients with opposing effects on blood pressure, hair loss treatment containing a 5-alpha-reductase inhibitor approximately halves PSA and must be accounted for in prostate monitoring for men on testosterone therapy, and combining peptides means combining preparations for which long-term human safety data does not exist. Never add something obtained elsewhere to a plan your ACT 2 Health clinician built without telling them. If you want to add a treatment, raise it at a follow-up so it can be assessed against everything you are already taking.
- Peptide questions
What should I do if I get a side effect?
- Tell your ACT 2 Health clinician when a side effect happens rather than waiting for the next scheduled follow-up, using the secure messaging in your patient account. Severe or rapidly worsening symptoms are a different matter: chest pain, difficulty breathing, fainting, an erection lasting more than four hours, sudden vision or hearing loss, signs of a blood clot or a severe allergic reaction need 911 or an emergency department, not a message. Do not stop, restart or change how you take a medication on your own — your clinician can adjust the plan, and knowing exactly what you took and when is part of how they do that. Some effects settle with time and some do not, which is why reporting early leaves the clinician more options.
- How ACT 2 works
How do I report a side effect?
- Report a side effect to your ACT 2 Health clinician through the secure messaging in your patient account, or through Contact if you cannot reach your account. For anything severe or rapidly worsening, call 911 or go to an emergency department first and tell your clinician afterwards. You can also report a suspected problem with any medication directly to the FDA through its MedWatch program at fda.gov/medwatch, which is a separate channel from telling your clinician and is worth using as well for a serious or unexpected reaction. Reporting to the FDA does not require you to be certain the medication caused it. Both reports feed the record of what a preparation actually does in practice, which for compounded preparations is thinner than for approved products.
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What is the difference between a side effect and an adverse event?
- A side effect is an unwanted effect of a medication that is known and expected — nausea on a GLP-1, an injection-site reaction, breast tenderness on estrogen therapy. An adverse event is any harmful or unintended medical occurrence in someone taking a medication, whether or not the medication turns out to have caused it; the term is deliberately broader, because causation is usually unclear at the moment something happens. The practical difference is what you do with it: both go to your ACT 2 Health clinician, but a serious adverse event — one that is life-threatening or causes hospitalization or lasting harm — is also worth reporting to the FDA through MedWatch. Do not try to work out whether the medication was responsible before you report it.
What happens if a clinician decides a treatment is not safe for me?
- If an ACT 2 Health clinician decides a treatment is not safe or not appropriate for you, they tell you so and explain the reasoning rather than simply declining. Eligibility is decided treatment by treatment, so being ruled out for one thing does not rule out the others, and in many cases the clinician can suggest an alternative or say what would need to change or be investigated first. Where the right answer is care ACT 2 Health does not provide, the clinician will say what kind of in-person or specialist care to seek. A clinician declining to prescribe is the service working as intended, not failing.
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Is telehealth appropriate for every health problem?
- Telehealth is not appropriate for every health problem, and ACT 2 Health is built for one kind of care. That care is measurable, clinician-led treatment of metabolic, hormonal, sexual and healthspan concerns in adults in midlife. Anything that requires a physical examination, imaging, a procedure or hands-on assessment needs in-person care, and anything urgent needs emergency care. Some findings that surface during an ACT 2 Health evaluation are referred out rather than treated here — diagnosed adult growth hormone deficiency, for instance, is a specialist endocrine diagnosis requiring stimulation testing, and an elevated calprotectin result on stool testing warrants gastroenterology referral rather than dietary management. A clinician who tells you your problem belongs somewhere else is giving you the right answer.
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Can I take propranolol if I have asthma?
- No — propranolol is contraindicated if you have asthma. It is a non-selective beta blocker and blocks the airway receptor that asthma inhalers act on, so it can provoke bronchospasm and blunt the effect of a rescue inhaler. Asthma is a contraindication on the label rather than a caution to be weighed, and it applies to a single situational tablet as much as to regular use. Tell your ACT 2 Health clinician about asthma, COPD or any history of wheeze, including one you were told you had grown out of.
- Who cannot take beta blockers
Who should not take propranolol for performance anxiety?
- Propranolol is not appropriate for people with asthma, a slow heart rate or a rhythm problem, low blood pressure, heart failure, or diabetes treated with insulin — and it is not appropriate for anyone whose anxiety extends beyond specific, identifiable events. ACT 2 Health prescribes beta blockers only for situational physical symptoms in people who are otherwise well, after an evaluation covering cardiac history, current medications and what the anxiety actually looks like. Being ruled out for propranolol does not mean nothing can be done; it means the right care is somewhere else, and the clinician will say where.
- Who cannot take beta blockers
Do beta blockers affect blood sugar?
- Beta blockers mask the warning signs of hypoglycemia — tremor and a racing heart — and non-selective agents such as propranolol also slow recovery from a low. That matters most for people with diabetes treated with insulin or a sulfonylurea, who may lose the symptoms that normally tell them to act. GLP-1 medications and metformin do not cause hypoglycemia on their own in people without diabetes. Tell your clinician about every diabetes medication you take before a beta blocker is considered.
- Who cannot take beta blockers
Can I take a beta blocker if I am on a GLP-1?
- A beta blocker can usually be prescribed alongside a GLP-1 medication such as semaglutide or tirzepatide, provided nothing else rules it out — the combination is not itself a reason to decline. The masking of hypoglycemia symptoms matters if you also take insulin or a sulfonylurea, or if you are eating very little while training hard, and both are worth raising explicitly at your evaluation. All medical decisions are made solely by licensed healthcare professionals. Medications are prescribed only when medically necessary. GLP-1 medications are not suitable for everyone. Results may vary.
- Who cannot take beta blockers
Can I take a beta blocker if my resting heart rate is already low?
- A low resting heart rate is a reason for caution, because a beta blocker slows the heart further and a rate already in the forties or fifties may not have room to go lower. That range is common in endurance athletes and does not automatically rule a beta blocker out, but it does change the assessment. Heart rate — and, where indicated, an ECG — is checked before a beta blocker is prescribed, which is one reason these are not prescribed from a form alone.
- Who cannot take beta blockers
Can I take a beta blocker with blood pressure medication?
- Sometimes — but only with your current blood pressure readings and your complete medication list in front of the clinician, because every antihypertensive, alpha-blocker and PDE5 inhibitor adds to the pressure-lowering effect. Stacking two or three of them can drop blood pressure far enough to cause dizziness or fainting, particularly on standing. Tell your ACT 2 Health clinician about every blood pressure and rhythm medication you take, including ones prescribed by someone else, and never add a beta blocker to that list on your own.
- Who cannot take beta blockers
Can I stop taking a beta blocker suddenly?
- Never stop a regularly taken beta blocker abruptly on your own — abrupt withdrawal causes rebound heart rate and blood pressure and, in people with heart disease, can be dangerous. A single tablet taken situationally is a different matter and does not carry that risk. If you want to come off a beta blocker you take regularly, ask the prescriber who wrote it to plan it with you rather than deciding the timing yourself.
- Who cannot take beta blockers
Will propranolol make me drowsy or foggy?
- Propranolol is not a sedative and does not impair thinking, so it is not expected to make you drowsy or foggy. That is the main reason it is preferred over tranquilizers for tasks that require being sharp. Tiredness is nonetheless a recognized effect of beta blockers, particularly with regular use, so tell your clinician if you feel flattened or heavy on it. It is also why a first use is never scheduled for the day of something that matters — how any individual responds is not predictable in advance.
- Beta blockers for public speaking
Does propranolol help with public speaking?
- Propranolol acts on the physical symptoms of performance anxiety — racing heart, shaking hands, an unsteady voice — rather than on the nerves themselves, and trials in musicians and public speakers have reported reduced physical symptoms with performance maintained or improved. That is evidence about groups rather than a guarantee about any individual, and it is prescribed only where a clinician judges it appropriate after evaluation. It does nothing for an anxiety disorder, and ACT 2 Health does not prescribe it for one.
- Beta blockers for public speaking
Does propranolol stop anxious thoughts?
- No — propranolol does not stop anxious thoughts. It blocks the body's response to adrenaline — the racing heart, the tremor — and does not act on the thoughts themselves. For many people breaking the physical loop settles the whole experience; for others the thoughts need a different approach entirely, which means therapy or care from a clinician who treats anxiety. If the worry persists between events, that points away from a beta blocker rather than toward more of one.
- Beta blockers for public speaking
Is propranolol a treatment for anxiety?
- No — propranolol is not a treatment for anxiety disorders. It acts on situational, physical performance symptoms for a matter of hours, while generalized anxiety and social anxiety disorder are conditions with their own evidence-based treatments. ACT 2 Health prescribes beta blockers for situational physical symptoms in people who are otherwise well, and refers anxiety disorders to a primary clinician or a mental-health professional. Using a beta blocker to manage a disorder it does not treat delays the care that would actually help.
- Beta blockers vs anxiety medication
Propranolol or Xanax — which is better for anxiety?
- For a single defined event, propranolol controls the physical symptoms without sedation or dependence, while a benzodiazepine such as alprazolam reduces the fear at the cost of both. For an anxiety disorder neither is the answer — antidepressants and therapy are, delivered by a clinician who manages anxiety care and can follow it up in person. ACT 2 Health does not prescribe benzodiazepines and does not treat anxiety disorders.
- Beta blockers vs anxiety medication
Can a beta blocker replace an SSRI?
- No — a beta blocker cannot replace an SSRI. SSRIs treat anxiety disorders over weeks by a different mechanism, while a beta blocker blunts adrenaline symptoms for a few hours — they do different jobs, and beta blockers have been found inferior to SSRIs for anxiety disorders. Never stop or substitute an antidepressant on your own, including to try something that looks simpler. That is a conversation for the prescriber who wrote it.
- Beta blockers vs anxiety medication
Does ACT 2 Health prescribe Xanax or other benzodiazepines?
- No — ACT 2 Health does not prescribe Xanax (alprazolam) or any other benzodiazepine. They are controlled substances carrying dependence and withdrawal risk, appropriate only as part of managed anxiety care with in-person follow-up, which ACT 2 Health does not provide. If a benzodiazepine is what you need, the right prescriber is a primary care clinician or a psychiatrist.
- Beta blockers vs anxiety medication
How do I know if I have performance anxiety or an anxiety disorder?
- Performance anxiety attaches to a specific event and resolves once the event is over. Persistent worry, panic attacks, avoidance, or anxiety with no event to attach to points instead to an anxiety disorder — and to a clinician who treats those, which ACT 2 Health does not. An ACT 2 Health evaluation includes this question, and a clinician who concludes your anxiety is not situational will say so and refer rather than prescribe.
- Beta blockers vs anxiety medication
This page is educational and is not medical advice. Treatments are available only to eligible patients following clinical evaluation and within applicable regulations. Individual results vary.