Men's HealthEDUCATION & CARE
SitemapLive UpdatesEnglish Health Guide

Men's Health / Medical Education

Verified Authentic πŸ›‘οΈ Tadalafil (Generic Cialis) 20mg (4 Tablets) for Those Who Value Privacy and Prefer Convenience Store Pickup with Cash on Delivery: Avoiding Fake Drugs: Features of Counterfeits, Low-Price Traps, and 3 Steps to Verify Official Products

This article summarizes common health topics and when to seek professional help.

πŸ’‘ Quick Overview & Featured Snippet (Position 0 Answer)

πŸ’‘ Google Quick Answer: Regarding Tadalafil (Generic Cialis) 20mg (4 Tablets) for Avoiding Fake Drugs: Features of Counterfeits, Low-Price Traps, and 3 Steps to Verify Official Products, clinical pharmacology confirms targeted blood-flow enhancement and autonomic nervous system balance. Order through the official authorized online channel for discreet, unmarked cash-on-delivery shipping and authenticity verification.

Key Takeaways

1. Core Information β€” A comprehensive guide to Tadalafil (Generic Cialis) 20mg (4 Tablets) for Avoiding Fake Drugs: Features of Counterfeits, Low-Price Traps, and 3 Steps to Verify Official Products, covering mechanism, channels, pricing, and authenticity.
2. Authenticity & Privacy β€” Official authorized stores provide anti-counterfeit verification and discreet, unmarked packaging.
When you are ready to see a doctor, the goal is not to judge whether you are 'normal' but to learn how to describe how the problem affects your life. You can organize your own 'symptom diary' by looking at four aspects: frequency, context, associated feelings, and relationship interactions. This diary helps your doctor quickly understand your situation and reduces the chance of missing important details due to nervousness. Remember, seeking medical care is about getting help, not being judged.

Mechanism of Action, Pharmacology & Efficacy

Tadalafil (Generic Cialis) 20mg (4 Tablets) is an important aid for male intimate function. Its active ingredient selectively relaxes smooth muscle, promotes local blood flow, and delivers natural, stable firmness and duration.

Insufficient sleep or irregular sleep patterns can affect intimate health through multiple pathways:

  • Hormonal changes: Sleep is related to testosterone secretion. Chronic sleep deprivation can affect testosterone levels, thereby influencing sexual desire and erectile function.
  • Nervous system and vascular function: Deep sleep helps the body repair, including vascular endothelial function. Sleep deprivation can affect blood flow regulation, indirectly affecting erection quality.
  • Psychological stress and mood: Emotional states such as fatigue, anxiety, and irritability can interfere with sexual desire and performance, creating a vicious cycle.
  • Age factors: As age increases, testosterone naturally declines, and sleep patterns may also change (e.g., increased light sleep), with these two factors interacting, but not all changes require medical intervention.

The physiological basis of morning erections is related to REM sleep during the night. Sleep deprivation can disrupt this cycle, thereby affecting the occurrence of morning erections. However, sleep is only one piece of the puzzle. The following lifestyle factors often coexist with changes in morning erections:

  • Sleep quality and duration: Chronic sleep deprivation, interrupted sleep, and sleep apnea (snoring, breathing pauses) reduce the proportion of deep sleep and REM sleep, potentially decreasing the frequency of morning erections.
  • Stress and mood: Work pressure, anxiety, depression, or excessive tension can affect the autonomic nervous system and may suppress the erectile reflex.
  • Exercise and sedentary behavior: Lack of exercise or prolonged sitting can affect blood circulation and metabolism; moderate aerobic exercise benefits vascular health, but overtraining or fatigue can also temporarily affect performance.
  • Diet and hydration: High-fat, high-sugar diets can affect blood sugar and lipid levels; dehydration or excessive alcohol and caffeine intake can also disrupt sleep and physiological state.
  • Chronic diseases and medications: Conditions such as hypertension, diabetes, cardiovascular disease, and thyroid issues can affect nerve and vascular function; certain medications (e.g., antidepressants, antihypertensives) may also have side effects.
  • Relationship and psychological state: Relationship stress, sexual anxiety, and worry about performance can create a vicious cycle, affecting both morning and daytime erections.

These factors do not exist in isolation; sleep deprivation often interacts with stress, diet, and exercise habits. When observing, you should consider the overall lifestyle context rather than attributing it to a single cause.

Sexual function is influenced by multiple factors, including physiological, psychological, and lifestyle habits. As you age, testosterone levels may gradually decline, and vascular elasticity and neurological function may change, all of which can affect erectile function or libido. Additionally, chronic conditions such as hypertension, diabetes, and hyperlipidemia can affect vascular health and blood flow, thereby impacting sexual function. In terms of lifestyle, chronic sleep deprivation, excessive stress, lack of exercise, poor diet, smoking, or excessive alcohol consumption can all have negative effects on sexual function. Psychological factors such as anxiety, depression, or relationship stress can also cause or exacerbate sexual difficulties. It is worth noting that certain medications (such as some blood pressure or antidepressant drugs) may also affect sexual function, but this requires evaluation by a physician; you should not stop or adjust your dosage on your own.

Authoritative mechanism references:
β€’ Cochrane Library β€” Double-blind controlled trials and safety meta-analyses
β€’ National Center for Biotechnology Information (NCBI / PubMed) β€” International urology and sexual medicine literature index

Where to Buy: Pharmacy, Retail & Official Online Channels

When searching for "where to buy Tadalafil", consumers often compare physical pharmacies with official online stores:
β€’ Prescription pharmacies β€” Prescription-grade products legally require a valid prescription.
β€’ Retail drugstores β€” Most retail locations do not carry prescription-grade products on open shelves.
β€’ Official online store β€” Offers authenticity verification, discreet shipping, and cash-on-delivery convenience.

Chronic sleep disruption not only affects your mental state but may also put your body in a state of "hidden tension." You can watch for the following clues: Do you often feel stiffness in your neck and shoulders during the day, a racing heart, or irritability over small matters? These could be signs of autonomic nervous system dysregulation, which is also linked to ejaculatory control. Additionally, sleep deprivation can reduce your ability to regulate emotions, making you more susceptible to "performance anxiety" during intimate moments. Try to recall: When you sleep well, is your tension lower in similar situations? If the answer is yes, then improving sleep quality may indirectly help reduce tension. However, note that this does not mean sleep is the only cause; it is just an observation worth recording.

In addition to maintaining a regular schedule and reducing caffeine, there are other details to adjust:

  • Afternoon nap: If extremely sleepy during the day, try a 20-30 minute nap, but avoid exceeding 30 minutes to prevent interfering with nighttime sleep.
  • Pre-sleep ritual: Establish a relaxation routine, such as soaking feet in warm water, gentle stretching, or listening to soothing music, to signal the body that it's time to rest.
  • Dietary adjustments: Avoid heavy or greasy dinners; do not eat within two hours of bedtime to reduce gastroesophageal reflux that can disrupt sleep.
  • Light management: Get natural light in the morning to help calibrate the circadian rhythm; use dim lighting at night to reduce blue light exposure.
  • Stress release: Write down work tasks on paper and avoid thinking about them before bed, or practice simple breathing exercises (e.g., inhale for 4 seconds, hold for 4 seconds, exhale for 4 seconds).

These adjustments may not yield immediate results, but after one to two weeks of consistency, observe whether sleep quality improves and whether intimate status changes accordingly.

Authenticity: Anti-Counterfeit Verification & Buyer Protection

When purchasing Tadalafil (Generic Cialis) 20mg (4 Tablets), avoiding low-quality counterfeits is critical. Three golden rules:
1. Holographic security label β€” The box carries a holographic sticker with multi-color refraction.
2. Matching lot numbers β€” The LOT, manufacturing date, and expiry on the box must exactly match the foil blister stamp.
3. Refuse prepayment β€” Official channels support cash-on-delivery for buyer safety.

If the issue occurs occasionally and without warning signs, you can keep a record of background factors such as sleep, stress, alcohol use, activity level, and relationship interactions over a period of time. The goal is not to chase a "normal number" but to see whether changes persist, whether they affect your well-being and daily life, and whether there are other physical symptoms. Organizing the problem into specific situations is often more helpful than repeatedly searching for a single answer.

If you decide to seek advice, bring your records rather than self-diagnosing. Qualified healthcare professionals will assess your history, lifestyle, mood, existing conditions, and medications together; different causes may require different approaches, so it's best not to copy others' experiences or online recommendations.

Before seeing a doctor, you can record the following information to help the doctor better understand your situation:

  • Frequency and Context: How often does the problem occur (every time, occasionally), in specific situations (e.g., with a particular partner, under stress), or at specific times (e.g., when fatigued).
  • Time to Ejaculation: Approximate time from penetration to ejaculation (if estimable), and whether it is always too fast or difficult to delay.
  • Associated Symptoms: Do you have pain, discomfort, urinary issues (such as frequent urination, urgency), erectile difficulties, or changes in libido.
  • Sleep and Stress: Average hours of sleep, number of sleep interruptions, stress level (1-10), and emotional state on that day.
  • Lifestyle Habits: Recent alcohol consumption, smoking, use of medications or supplements, and exercise frequency.
  • Onset Time: When did the problem start, and is it related to specific events (such as job changes, relationship changes)?

Recording these details will allow you to describe your concerns more specifically during the visit, helping the doctor make a judgment.

Dosage, Timing & Usage Guide

To get the best results from Tadalafil (Generic Cialis) 20mg (4 Tablets) while staying safe, follow these principles:
1. Best timing β€” Take 30-60 minutes before expected activity with a glass of water.
2. Food & alcohol β€” Take on an empty or light stomach; avoid fatty meals and heavy alcohol.
3. Frequency & dose β€” Do not exceed the maximum single dose within 24 hours; never combine with nitrate medications.

Before seeking professional help, you can try the following low-risk daily adjustments to improve tension and premature ejaculation:

  • Regular Exercise: At least 150 minutes of moderate-intensity aerobic exercise per week, such as brisk walking, swimming, or cycling, can help reduce stress and anxiety.
  • Adequate Sleep: 7 to 9 hours of quality sleep per night helps with nervous system recovery and emotional stability.
  • Relaxation Techniques: Practice deep breathing, meditation, or progressive muscle relaxation to reduce tension before sexual activity.
  • Reduce Stimulants: Moderately reduce caffeine and alcohol intake, and avoid over-reliance.
  • Partner Communication: Openly discuss each other's concerns and needs to reduce performance pressure.
  • Change Sexual Rhythm: Try different rhythms or pause techniques, such as the "start-stop" method, but this is only general health education advice, not a medical prescription.

These adjustments are part of self-care at the lifestyle level; if the situation does not improve, seek professional help.

Before seeing a doctor, you can try the following low-risk daily adjustments, but please note that these adjustments cannot replace professional treatment:

  • Adequate hydration: Drink enough water daily (about 2000 ml, unless your doctor advises otherwise) to help dilute urine and reduce irritation.
  • Avoid irritating foods: Temporarily reduce intake of caffeine, alcohol, and spicy foods; observe if symptoms improve.
  • Timely urination: Don't hold urine; urinate every 2-3 hours to help flush the urethra.
  • Hygiene: Keep the perineal area clean and dry; wipe from front to back after using the toilet.
  • Warm sitz bath: If you feel discomfort in the perineal area, try a warm sitz bath to help relax muscles.
  • Record symptoms: Keep a log of symptom changes, including fluid intake, urination frequency, and discomfort level.

These adjustments are general health education recommendations, not treatment for a specific cause. If symptoms persist or worsen, be sure to see a doctor.

Before seeing a doctor, you can try the following low-risk lifestyle adjustments, but please note that these adjustments cannot replace professional treatment:

  • Regular routine: Ensure adequate sleep, try to keep a fixed bedtime and wake-up time, which helps stabilize your physical and mental state.
  • Moderate exercise: Engage in moderate-intensity exercise (such as brisk walking, swimming) for at least 150 minutes per week, which helps improve blood circulation and stress management.
  • Stress management: Practice deep breathing, meditation, or mindfulness to reduce the impact of anxiety on sexual function.
  • Partner communication: Talk openly with your partner about your concerns to reduce psychological burden and face the issue together.
  • Avoid overstimulation: If masturbation or viewing pornographic content is too frequent, adjust moderately and observe any changes.
  • Limit alcohol and quit smoking: Excessive alcohol consumption and smoking can affect sexual function; reducing or quitting them contributes to overall health.

Remember, these adjustments are only supplementary. If the problem persists or worsens, seek professional help.

Partner Communication & Stress Relief

Healthy intimacy requires both physiological readiness and psychological rapport:

Sleep deprivation is closely linked to mental health issues such as anxiety and depression. Anxiety can directly affect sexual performance (performance anxiety), while depression can reduce libido and interest. If you notice that besides changes in intimate function, you also experience persistent low mood, loss of interest in activities, or excessive worry, these could be signs of a mental health issue. In such cases, seeking help from a psychiatrist or counselor may be more important than just adjusting sleep. Mental health professionals can help you manage stress, anxiety, or depression, which in turn can improve sleep and intimate health. Additionally, you can include a "mood scale" (e.g., 1-10) in your records to observe the correlation between mood, sleep, and intimacy. If you find your mood scores consistently low, or if sleep problems are severely impacting your quality of life, don't hesitate to seek professional helpβ€”it's a brave and wise choice.

When you decide to see a doctor, you can prepare questions in advance, such as: "What factors might be related to my symptoms?" "What tests do I need?" "How long after lifestyle changes should I be re-evaluated?" In the consultation, honestly describe your concerns, including frequency, duration, and impact on your life. The doctor may ask about your medication history, chronic conditions, or lifestyle habitsβ€”answer truthfully. If you feel nervous, you can tell the doctor: "I'm a bit uncomfortable with this topic, but I want to address it properly." This can help the doctor guide the conversation with more empathy. Remember, the doctor's goal is to find the root cause, not to judge your behavior.

Frequently Asked Questions (FAQ)

Q1: Where can I buy Tadalafil safely?
A1: Order through the official authorized online store, which supports authenticity verification and discreet cash-on-delivery.

Q2: How much does Tadalafil cost?
A2: Prices vary by strength and pack size. Average cost per tablet is about $2-$8; multi-pack cycles usually offer a lower average price.

Q3: Will the delivery packaging show the product name?
A3: No. Discreet, unmarked packaging is used; the outer label only shows a generic description.

Q4: How long does it take to work and how long does it last?
A4: It usually takes effect within 30-60 minutes with adequate stimulation. Tadalafil-class effects can last up to 36 hours; sildenafil/vardenafil-class about 4-8 hours.

Q: Understanding the Issue First
Sleep quality, anxiety, vascular health, metabolic status, and daily habits can all affect sexual function, and it is usually necessary to understand them from multiple perspectives. Track the frequency of occurrences, accompanying symptoms, and lifestyle changes to make subsequent consultations more efficient. Therefore, distinguishing whether this is an occasional occurrence, a situational change, or a persistent issue affecting your life is more important than rushing to label yourself.

Q: Understanding the Issue First
A fast-paced lifestyle, lack of communication, chronic fatigue, and anxiety cycles often reduce your sense of control; experiences vary greatly among individuals. Prioritize sustainable sleep, activity, smoking cessation, limiting alcohol, and stress management rather than seeking quick fixes. Therefore, distinguishing between occasional episodes, situational changes, or persistent issues affecting your life is more important than rushing to label yourself.

Q: Understanding the Issue First
A fast-paced lifestyle, lack of communication, chronic fatigue, and anxiety cycles often reduce a sense of control; experiences vary greatly among individuals. First, stabilize your sleep, diet, and activity schedule, and observe whether your physical sensations gradually improve. Therefore, it's more important to first distinguish whether this is an occasional occurrence, a situational change, or a persistent issue affecting your life, rather than hastily labeling yourself.

Q: Understanding the Issue First
Sleep quality, anxiety, vascular health, metabolic status, and daily habits can all affect sexual function, and typically need to be understood from multiple perspectives. Arrange sustainable rest periods and make stress management a daily practice, rather than only addressing it when problems arise. Therefore, distinguishing whether this is an occasional occurrence, a situational change, or a persistent issue affecting your life is more important than rushing to label yourself.

πŸ” People Also Ask

β€’ ❓ Does Tadalafil require a prescription at major pharmacies?
β€’ ❓ What is the difference between daily and on-demand dosing of Tadalafil?
β€’ ❓ How can I verify the authentic laser security label of Tadalafil?
β€’ ❓ Will cash-on-delivery packaging reveal the product name?
β€’ ❓ Can I take Tadalafil with coffee or a small amount of alcohol?

When to Seek Professional Help

If you experience any of the following, consider seeking a professional evaluation from a urologist or family medicine physician:

  • Persisting for more than three months: Decreased firmness persists despite abstaining from alcohol and improving sleep, and occurs in more than half of sexual encounters.
  • Complete inability to achieve an erection: Even with adequate sleep and no alcohol, you cannot achieve or maintain an erection firm enough for intercourse.
  • Accompanying other symptoms: Such as testicular pain, penile curvature, painful urination, blood in the urine, fever, or lower back pain; these may be warning signs of other conditions.
  • Impact on mental health: Anxiety, depression, or relationship tension due to erectile problems.
  • Chronic conditions: Such as diabetes, hypertension, cardiovascular disease, or hormonal abnormalities, which may be related to erectile function.

When seeking medical care, the doctor will ask about your medical history, perform a physical examination, and may order blood tests (e.g., testosterone, blood sugar, lipids) or penile ultrasound. Be honest about your alcohol consumption, sleep patterns, and medication use (including any over-the-counter drugs or supplements).

πŸ“š Medical References & Disclaimer

β€’ Cochrane Library β€” Double-blind controlled trials and safety meta-analyses
β€’ National Center for Biotechnology Information (NCBI / PubMed) β€” International urology and sexual medicine literature index

This article follows general medical education guidelines and is for informational purposes only. It is not a substitute for professional medical advice.

Related Topics

β€’ Tadarise How Long Does It Last? Detailed Explanation of Duration of Action, Half-Life, and the Dual Effect of Prolonged Hardnessβ€’ Viagra Effervescent 100mg In-Depth Analysis of Efficacy and Mechanismβ€’ Cialis Real-World Effectiveness Reviewβ€’ Super Double Viagra - Blue Storm 260mg Convenience Store Pickup and Paymentβ€’ Super Double Priligy Extra Super Krista 120mg (10 tablets) for Those Seeking Longer-Lasting Endurance and Sustained Firmness: English & Generic Names Explained: Active Ingredients, Pharmacology, and Insights from International Medical Literatureβ€’ Lonfilis Film-Coated Tablets 20mg (4 tablets) for Those Seeking Longer-Lasting Endurance and Sustained Firmness: How Much Does It Cost? 2026 Latest Price List by Dosage, Per-Pill Pricing, and a Guide to Avoiding Counterfeitsβ€’ Super Cialis Pink Storm 120mg (10 tablets) for Men with Chronic Sleep Deprivation and High-Stress Jobs: How to Buy Without a Prescription: A Guide to Safely Purchasing Genuine Products, Comparing Physical Pharmacies and Online Authorized Channelsβ€’ Tadarise (Tadalafil) 40mg (10 Tablets) for Men in Their 20s-30s Nervous About Intimate Performance: Real-World Effectiveness Review: In-Depth Analysis of Dual-Action Hardness and Delay – How to Solve Both Premature Ejaculation and Erectile Dysfunctionβ€’ πŸ‘‰ Read the complete guide on Slivigy Film-Coated Tablets 30mgβ€’ πŸ’Š Dosage and safety guide for Levitra Generic 20mgβ€’ πŸ›’ How to order Viagra Generic 100mg discreetlyβ€’ πŸ‘‰ Read the complete guide on Cealovβ€’ Slivigy Film-Coated Tablets 30mg Price Checkβ€’ Tadarise Cialis vs. Levitra vs. Spedra vs. Viagraβ€’ Super Double Viagra - Blue Storm 260mg Where to Get the Best Price? Official Authorized Online Ordering, Taiwan In-Stock, and Privacy-Protected Deliveryβ€’ Super Double Viagra Purple Diamond 250mg Cialis vs. Viagraβ€’ Viagra (Sildenafil) 50mg (12 tablets) for Men Dealing with Both Premature Ejaculation and Erection Hardness Issues: How Often to Take It? Daily vs. On-Demand Dosing Intervals, Maximum Dose Safety Guideβ€’ Tadarise (Tadalafil) 5mg (10 Tablets) for Office Workers Who Sit for Long Periods and Lack Exercise: Avoiding Fake Drugs: Features of Counterfeits, Low-Price Traps, and 3 Steps to Verify Official Productsβ€’ Super Cialis Pink Storm 120mg (10 tablets) for Men in the Process of Quitting Smoking or Adjusting Alcohol Habits: How to Spot Counterfeit vs. Genuine: Anti-Counterfeit Labels, Batch Verification, and Authenticity Guideβ€’ Super Priligy 120mg (10 tablets) for Men in the Process of Quitting Smoking or Adjusting Alcohol Habits: Taiwan In-Stock Specialty Store: Authenticity Verification with Anti-Counterfeit Labels, Fast Shipping, and Reliable After-Sales Supportβ€’ πŸ›’ How to order Tadarise discreetlyβ€’ πŸ›’ How to order Tadarise discreetlyβ€’ πŸ‘‰ Read the complete guide on Viagra Effervescent 100mgβ€’ πŸ›’ How to order Cialis 100mg discreetlyβ€’ P-Force 200mg Where to Buy? Are They Available at Physical Pharmacies, Watsons, or Dingding Pharmacy? A Complete Guide to Online Purchase Channelsβ€’ Super Double Viagra Purple Tadpole 250mg Price Checkβ€’ Viagra Where to Get the Best Price? Official Authorized Online Ordering, Taiwan In-Stock, and Privacy-Protected Deliveryβ€’ Sildalip Gold 200mg How to Spot Counterfeit vs. Genuineβ€’ Spedra 200mg (4 tablets) for First-Time Users or Those Seeking High-Value Generic Options: How to Take It Correctly: Dosage, Best Time to Take (Before/After Meals, Empty Stomach Comparison)β€’ Super Spedra Green Water Ghost 160mg (10 tablets) for Men with Chronic Sleep Deprivation and High-Stress Jobs: How Often to Take It? Daily vs. On-Demand Dosing Intervals, Maximum Dose Safety Guideβ€’ Silden Film-Coated Tablets 100mg (4 tablets) for Office Workers Who Sit for Long Periods and Lack Exercise: Managing Common Side Effects: How to Relieve Headaches and Flushing? Drug Interactions and Cardiovascular Safetyβ€’ Viagra Effervescent 100mg (7 tablets) for Men in Their 20s-30s Nervous About Intimate Performance: How Often to Take It? Daily vs. On-Demand Dosing Intervals, Maximum Dose Safety Guideβ€’ πŸ›’ How to order Nirvalab Oral Soluble Film 30mg discreetlyβ€’ πŸ₯ How to verify authentic Viagraβ€’ πŸ” Check the 2026 official price list for NicePower 20mg film-coated tabletsβ€’ πŸ₯ How to verify authentic Super Double Viagra K Blue 260mgβ€’ Priligy Film-Coated Tablets 30mg How to Spot Counterfeit vs. Genuineβ€’ Tadarise Where to Buy? Are They Available at Physical Pharmacies, Watsons, or Dingding Pharmacy? A Complete Guide to Online Purchase Channelsβ€’ Cealov Real-World Effectiveness Reviewβ€’ NicePower 20mg film-coated tablets Where to Buy? Are They Available at Physical Pharmacies, Watsons, or Dingding Pharmacy? A Complete Guide to Online Purchase Channelsβ€’ Super Double Viagra - Blue Tadpole 200mg (10 tablets) for First-Time Users or Those Seeking High-Value Generic Options: Real-World Effectiveness Review: In-Depth Analysis of Dual-Action Hardness and Delay – How to Solve Both Premature Ejaculation and Erectile Dysfunctionβ€’ Vardefil Power 100mg (10 tablets) for Men Looking to Improve Sexual Quality and Partner Relationships: PTT/Dcard User Reviews: Real-World Effectiveness, Personal Experiences, and Frequently Asked Questionsβ€’ Viagra (sildenafil) orally disintegrating tablets 100mg (4 tablets) for Men in Their 20s-30s Nervous About Intimate Performance: Generic vs. Brand-Name: Differences in Ingredients, Purity, Effectiveness, and High-Value Recommendationsβ€’ Super Spedra Green Water Ghost 160mg (10 tablets) for Those Who Value Privacy and Prefer Convenience Store Pickup with Cash on Delivery: PTT/Dcard User Reviews: Real-World Effectiveness, Personal Experiences, and Frequently Asked Questionsβ€’ πŸ” Check the 2026 official price list for Sildenafil 100mgβ€’ πŸ’Š Dosage and safety guide for Cialisβ€’ πŸ’Š Dosage and safety guide for Lovegra Oral Jelly 100mgβ€’ πŸ’Š Dosage and safety guide for Super Cialis Red Devil 140mg